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Reprint as at 1 June 2001 Hazardous Substances (Classification) Regulations 2001 (SR 2001/113) Silvia Cartwright, Governor-General Order in Council At Wellington this 28th day of May 2001 Present: Her Excellency the Governor-General in Council Pursuant to section 74(a) of the Hazardous Substances and New Or- ganisms Act 1996, Her Excellency the Governor-General, acting on the advice and with the consent of the Executive Council (given on the recommendation of the Minister for the Environment made in Note Changes authorised by section 17C of the Acts and Regulations Publication Act 1989 have been made in this reprint.
A general outline of these changes is set out in the notes at the end of this reprint, together with other explanatory material about this reprint.

These regulations are administered by the Ministry for the Environment.

1 Hazardous Substances (Classification) Regulations 2001 Reprinted as at 1 June 2001 compliance with section 141(1) of that Act), makes the following regulations.
Contents Title Commencement Interpretation Classification system Classes of hazardous properties Subclasses and categories for explosive substances Subclasses and categories for flammable substances Subclasses and categories for oxidising substances and organic peroxides Subclasses and categories for toxic substances Subclasses and categories for corrosive substances Subclasses and categories for ecotoxic substances Schedule 1 Classification criteria for explosive substances Schedule 2 Classification criteria for flammable substances Schedule 3 Classification criteria for oxidising substances and organic peroxides Schedule 4 Classification criteria for toxic substances Schedule 5 Classification criteria for corrosive substances Schedule 6 Classification criteria for ecotoxic substances Schedule 7 Tables of hazard classifications Page 2 3 3 5 5 6 6 7 7 8 8 9 16 33 46 58 60 65 Regulations Title These regulations are the Hazardous Substances (Classifica- tion) Regulations 2001.
Reprinted as at 1 June 2001 Hazardous Substances (Classification) Regulations 2001 r 3 2 3 Commencement These regulations come into force on 2 July 2001.
Interpretation In these regulations, unless the context otherwise requires,— Act means the Hazardous Substances and New Organisms Act 1996 ASTM has the same meaning as it has in regulation 3 of the Hazardous Substances (Minimum Degrees of Hazard) Regu- lations 2001 corrosive substance means a substance that meets the min- imum degree of hazard prescribed by Schedule 5 of the Haz- ardous Substances (Minimum Degrees of Hazard) Regulations 2001 for a substance with corrosive properties data has the same meaning as it has in regulation 3 of the Haz- ardous Substances (Minimum Degrees of Hazard) Regulations 2001 desensitising agent means a substance or material that, when mixed with a class 1, class 4.1.2, or class 5.2 substance, produces a mixture that has reduced hazardous properties (in terms of those classifications) compared with the original class 1, class 4.1.2, or class 5.2 substance ecotoxic substance means a substance that meets the min- imum degree of hazard prescribed by Schedule 6 of the Haz- ardous Substances (Minimum Degrees of Hazard) Regulations 2001 for a substance with ecotoxic properties explosive substance means a substance or article that meets the minimum degree of hazard prescribed by Schedule 1 of the Hazardous Substances (Minimum Degrees of Hazard) Regu- lations 2001 for a substance with explosive properties flammable substance means a substance that meets the min- imum degree of hazard prescribed by Schedule 2 of the Haz- ardous Substances (Minimum Degrees of Hazard) Regulations 2001 for a substance with flammable properties gas has the same meaning as it has in regulation 3 of the Haz- ardous Substances (Minimum Degrees of Hazard) Regulations 2001 3 r 3 Hazardous Substances (Classification) Regulations 2001 Reprinted as at 1 June 2001 ISO has the same meaning as it has in regulation 3 of the Haz- ardous Substances (Minimum Degrees of Hazard) Regulations 2001 liquid has the same meaning as it has in regulation 3 of the Hazardous Substances (Minimum Degrees of Hazard) Regu- lations 2001
 organic peroxide means a substance that meets the minimum degree of hazard prescribed by Schedule 3 of the Hazardous Substances (Minimum Degrees of Hazard) Regulations 2001 for a class 5.2 substance oxidising substance means a substance that meets the min- imum degree of hazard prescribed by Schedule 3 of the Haz- ardous Substances (Minimum Degrees of Hazard) Regulations 2001 for a substance with oxidising properties that is classified as a class 5.1.1 or 5.1.2 substance; but does not include organic peroxide SADT has the same meaning as it has in Schedule 2 of the Hazardous Substances (Minimum Degrees of Hazard) Regu- lations 2001 solid has the same meaning as it has in regulation 3 of the Haz- ardous Substances (Minimum Degrees of Hazard) Regulations 2001 Test Series has the same meaning as it has in regulation 3 of the Hazardous Substances (Minimum Degrees of Hazard) Regulations 2001 toxic substance means a substance that meets the minimum degree of hazard prescribed by Schedule 4 of the Hazardous Substances (Minimum Degrees of Hazard) Regulations 2001 for a substance with toxic properties UN Manual of Tests and Criteria has the same meaning as it has in regulation 3 of the Hazardous Substances (Minimum Degrees of Hazard) Regulations 2001 UN Model Regulations has the same meaning as it has in regulation 3 of the Hazardous Substances (Minimum Degrees of Hazard) Regulations 2001.
4 Reprinted as at 1 June 2001 Hazardous Substances (Classification) Regulations 2001 r 5 4 (1) (2) (3) (4) (5) Classification system Except as provided in subclauses (6) and (7), the classification system for hazardous substances comprises— (a) numbered classes (for example, class 4) indicating the intrinsic hazardous property of a substance: numbered subclasses (for example, subclass 4.2) indi- cating the type of hazard of a substance: lettered categories (for example, category A) indicating the degree of hazard of a substance.
(b) (c) The combination of numbers and letters used in the classifica- tion system constitutes the hazard classification of a substance.

Regulation 5 sets out the classes for each hazardous property.

Regulations 6 to 11 set out the subclasses for each hazardous property class and also identify the categories of each subclass (except for substances with explosive properties).

The schedules set out the criteria for each hazard classification (except for substances with explosive properties).
(6) All explosive substances are divided into both a subclass (in- dicating the type of explosive hazard) and a category (indicat- ing compatibility groupings) in the combinations permitted by regulation 6.

Categories for explosive substances do not indi- cate the degree of hazard.

Categories for toxic substances do not necessarily indicate the degree of hazard.

The table set out in Schedule 7 is intended as a guide to the classification system under these regulations.
(7) (8) 5 (1) (2) Classes of hazardous properties The classes of hazardous properties are as follows: (a) (b) (c) (d) (e) (f) (g) (h) Class 7 is unallocated.

class 1—explosiveness: class 2—flammability, gases: class 3—flammability, liquids: class 4—flammability, solids: class 5—capacity to oxidise: class 6—toxicity: class 8—corrosiveness: class 9—ecotoxicity.
5 Hazardous Substances (Classification) Regulations 2001 Reprinted as at 1 June 2001 r 6 6 (1) (2) (3) Subclasses and categories for explosive substances Explosive substances are divided into the subclasses 1.1, 1.2, 1.3, 1.4, 1.5, and 1.6 set out in the table in Part 1 of Schedule 1.

A substance or article is classified as being in a particular subclass if it meets the criteria set out in that table for that subclass.
Explosive substances are also divided into the categories A to H, J, K, L, N, and S set out in the table in Part 2 of Schedule 1.

Categories I, M, O, P, Q, and R are unallocated.

A substance or article is classified as being in a particular category if it meets the criteria set out in that table for that category.
For the purposes of subclass 1.4,— (a) (c) (b) a substance or an article that meets any one of the cri- teria of paragraph 16.6.1.4.5 of the UN Manual of Tests and Criteria must be allocated a category other than cat- egory S; and a substance or an article that meets the criteria of para- graph 16.6.1.4.6 of the UN Manual of Tests and Criteria must be allocated to category S; and a substance or an article that meets the criteria of para- graph 16.6.1.4.7(a)(i) of the UN Manual of Tests and Criteria must be allocated to category S. (4) No explosive substance may be allocated the following haz- ard classifications: 1.1H, 1.1K, 1.1N, 1.1S; 1.2A, 1.2N, 1.2S; 1.3A, 1.3B, 1.3D, 1.3E, 1.3N, 1.3S; 1.4A, 1.4H, 1.4J, 1.4K, 1.4L, 1.4N; 1.5A, 1.5B, 1.5C, 1.5E, 1.5F, 1.5G, 1.5H, 1.5J, 1.5K, 1.5L, 1.5N, 1.5S; 1.6A, 1.6B, 1.6C, 1.6D, 1.6E, 1.6F, 1.6G, 1.6H, 1.6J, 1.6K, 1.6L, or 1.6S.
7 (1) Subclasses and categories for flammable substances Flammable substances are divided into the subclasses 2.1.1, 2.1.2, 3.1, 3.2, 4.1.1, 4.1.2, 4.1.3, 4.2, and 4.3, and each sub- class is divided into 1 or more categories.

(2) A flammable substance is classified as having a particular haz- ard classification if it meets the criteria set out in the table in Schedule 2 for that hazard classification.
For the purposes of this regulation, substances classified as class 4 (flammable solids) are not necessarily solids.
(3) 6 Reprinted as at 1 June 2001 Hazardous Substances (Classification) Regulations 2001 r 9 (4) For the purposes of subclass 4.1.2,— (a) if a substance does not meet the criteria for a 4.1.2A, 4.1.2B, or 4.1.2C hazard classification, a 4.1.2D hazard classification applies unless sufficient data are provided that show the substance meets the criteria for hazard classification 4.1.2E, 4.1.2F, or 4.1.2G: Test Series A, B, C, D, E, F, and G refer to UN Tests for Self-Reactive Substances and Organic Peroxides in sections 21, 22, 23, 24, 25, 26, and 27 respectively of the UN Manual of Tests and Criteria.
(b) (5) Subclasses 2.2 and 2.3 are unallocated.

8 Subclasses and categories for oxidising substances and organic peroxides (1) Oxidising substances are divided into the subclasses 5.1.1 and 5.1.2, organic peroxides are subclass 5.2, and each subclass is divided into 1 or more categories.

(2) An oxidising substance or organic peroxide is classified as having a particular hazard classification if it meets the criteria set out in the table in Schedule 3 for that hazard classification.
For the purposes of subclass 5.2,— (a) (3) if a substance does not meet the criteria for a 5.2A, 5.2B, or 5.2C hazard classification, a 5.2D hazard classifica- tion applies unless sufficient data are provided that show the substance meets the criteria for hazard classification 5.2E, 5.2F, or 5.2G: Test Series A, B, C, D, E, F, and G refer to UN Tests for Self-Reactive Substances and Organic Peroxides in sections 21, 22, 23, 24, 25, 26, and 27 respectively of the UN Manual of Tests and Criteria.
(b) 9 (1) Subclasses and categories for toxic substances Toxic substances are divided into the subclasses 6.1, 6.3, 6.4, 6.5, 6.6, 6.7, 6.8, and 6.9, and each subclass is divided into 1 or more categories.

(2) A toxic substance is classified as having a particular hazard classification if it meets the criteria set out in the table in Schedule 4 for that hazard classification.
7 r 10 (3) (4) Hazardous Substances (Classification) Regulations 2001 Reprinted as at 1 June 2001 For the purposes of subclass 6.1, toxic substances that meet the criteria for more than 1 category must be classified in the category with the highest degree of hazard.

Subclass 6.2 is unallocated.

10 (1) Subclasses and categories for corrosive substances Corrosive substances are divided into the subclasses 8.1, 8.2, and 8.3, and each subclass is divided into 1 or more categories.
(2) A corrosive substance is classified as having a particular haz- ard classification if it meets the criteria set out in the table in Schedule 5 for that hazard classification.

11 (1) Subclasses and categories for ecotoxic substances Ecotoxic substances are divided into the subclasses 9.1, 9.2, 9.3, and 9.4, and each subclass is divided into 1 or more cat- egories.
(2) An ecotoxic substance is classified as having a particular haz- ard classification if it meets the criteria set out in the table in Schedule 6 for that hazard classification.
8 Reprinted as at 1 June 2001 Hazardous Substances (Classification) Regulations 2001 Schedule 1 Schedule 1 Classification criteria for explosive substances r 6 Part 1 Subclasses for explosive substances and articles Interpretation In this Part, unless the context otherwise requires, detonate has the same meaning as it has in regulation 3 of the Hazardous Substances (Minimum Degrees of Hazard) Regulations 2001.
Subclasses Explosive substances and articles are classified in the sub- classes set out in the first column of the table in this Part.

Criteria The criteria for each subclass are set out in the second column of the table in this Part.
1 2 3 Table of subclasses and criteria Subclasses Criteria for each subclass 1.1—Substances and articles that have a mass explosion hazard A substance that— (a) meets the criteria of paragraph 16.4.1.4 of the UN Manual of Tests and Criteria when an individual article or package is tested as pre- scribed in Test Series 6 type (a) of paragraph 16.4 of that manual; or meets the criteria of paragraph 16.5.1.8 of the UN Manual of Tests and Criteria when a stack of articles or packages is tested as prescribed in Test Series 6 type (b) of para- graph 16.5 of that manual; or meets the criteria of paragraph 16.6.1.4.2 of the UN Manual of Tests and Criteria when tested as prescribed in Test Series 6 type (c) of paragraph 16.6 of that manual.
(b) (c) 9 Schedule 1 Hazardous Substances (Classification) Regulations 2001 Reprinted as at 1 June 2001 Part 1—continued Subclasses Criteria for each subclass A substance that does not meet the criteria for subclass 1.1, but meets any one of the criteria in paragraph 16.6.1.4.3 of the UN Manual of Tests and Criteria when tested as prescribed in Test Series 6 type (c) of paragraph 16.6 of that manual.
A substance that does not meet the cri- teria for each of subclasses 1.1 and 1.2, but meets any one of the criteria of paragraph 16.6.1.4.4 of the UN Manual of Tests and Criteria when tested as prescribed in Test Series 6 type (c) of paragraph 16.6 of that manual.
A substance that— (a) does not meet the criteria for each of subclasses 1.1, 1.2, and 1.3, but meets any one of the criteria of paragraph 16.6.1.4.5 of the UN Manual of Tests and Criteria when tested as prescribed in Test Series 6 type (c) of paragraph 16.6 of that manual; or does not meet the criteria for each of subclasses 1.1, 1.2, and 1.3, or for paragraph (a), but meets the cri- teria of paragraph 16.6.1.4.6 of the UN Manual of Tests and Criteria when tested as prescribed in Test Series 6 type (c) of paragraph 16.6 of that manual; or does not meet the criteria of each of subclasses 1.1, 1.2, and 1.3, or for paragraph (a) or paragraph (b), but meets the criteria of paragraph 16.6.1.4.7(a)(i) of the UN Manual of Tests and Criteria when tested as prescribed in Test Series 6 type (c) of paragraph 16.6 of that manual.
(b) (c) 1.2—Substances and articles that have a projection hazard but not a mass explosion hazard 1.3—Substances and articles that have a fire hazard and either a minor blast hazard or a minor projection hazard, or both, but not a mass ex- plosion hazard 1.4—Substances and articles that present no significant explosive haz- ard Note: see regulation 6(3) for sub- stances and articles that must or must not be allocated category S. 10 Reprinted as at 1 June 2001 Hazardous Substances (Classification) Regulations 2001 Schedule 1 Part 1—continued Subclasses Criteria for each subclass A substance that is a very insensitive explo- sive substance that— (a) 1.5—Very insensitive substances that have a mass explosion hazard Note: if a substance meets any one of the criteria specified in Test Series 5, it must be tested and allocated according to Test Series 6.
1.6—Extremely insensitive articles that do not have a mass explosion hazard An article that— (a) (b) (c) (b) does not meet any one of the cri- teria for a positive result in para- graph 15.4.1.4 of the UN Manual of Tests and Criteria when tested as prescribed in Test Series 5 type (a) of paragraph 15.4 of that manual; and does not meet any one of the cri- teria for a positive result in any one of paragraphs 15.5.1.4, 15.5.2.4, and 15.5.3.4 of the UN Manual of Tests and Criteria when tested as prescribed in the respective tests of Test Series 5 type (b) of paragraph 15.5 of that manual; and the criterion for does not meet a positive result in paragraph 15.6.1.4 when tested as prescribed in Test Series 5 type (c) of para- graph 15.6 of the UN Manual of Tests and Criteria.
is manufactured from a substance that is an extremely insensitive det- onating substance if that substance fails to meet any one of the criteria for a positive result in any of para- graphs 17.4.1.4, 17.5.1.4, 17.6.1.4, 17.6.2.4, 17.7.2.4, 17.7.1.4, 17.8.1.4, and 17.9.1.4 of the UN Manual of Tests and Criteria when tested as prescribed in the respect- ive tests of Test Series 7 type (a), (b), (c), (d), (e), and (f) of section 17 of that manual; and fails to meet any one of the cri- teria for a positive result in any of paragraphs 17.10.1.4, 17.11.1.4, 17.12.1.4, and 17.13.1.4 of the UN Manual of Tests and Criteria when tested as prescribed in the respect- ive tests of Test Series 7 type (g), (h), (j), and (k) of section 17 of that manual.
11 Schedule 1 Hazardous Substances (Classification) Regulations 2001 Reprinted as at 1 June 2001 Part 2 Categories for explosive substances and articles Interpretation In this Part, unless the context otherwise requires,— deflagrate has the same meaning as it has in regulation 3 of the Hazardous Substances (Minimum Degrees of Hazard) Regu- lations 2001 effective protective feature means a device incorporated into an explosive article that will prevent accidental functioning during normal conditions of transport, storage, or handling primary explosive substance means a substance that— (a) has the necessary sensitivity to heat, friction, or shock to make it suitable for initiating secondary detonating explosive substances and articles; and (b) when incorporated into an explosive article, is known as a primer or detonator propellant explosive substance means a substance that defla- grates pyrotechnic effect has the same meaning as it has in regu- lation 3 of the Hazardous Substances (Minimum Degrees of Hazard) Regulations 2001 pyrotechnic substance means a substance that produces pyro- technic effects secondary detonating explosive substance means a sub- stance designed to detonate that requires stimulation equiva- lent to the detonation of a primary explosive substance to initiate it.
Table of categories Explosive substances and articles are also classified in categor- ies according to the criteria set out in the following table.

The categories are set out in the first column and the criteria for each category are set out in the second column.
4 5 12 Reprinted as at 1 June 2001 Hazardous Substances (Classification) Regulations 2001 Schedule 1 Category A B C D E Part 2—continued Table of categories Criteria for each category A primary explosive substance that is very sensi- tive to heat, impact, or friction, or able to transmit detonation or deflagration to secondary detonating explosive substances close to it, as measured by the criteria in any of paragraphs 13.4.1.4, 13.4.2.4, 13.4.3.4, 13.4.4.4, 13.4.5.4, 13.4.6.4, 13.5.1.4, 13.5.2.4, 13.5.3.4, and 13.7.1.3 of the UN Manual of Tests and Criteria in the respective tests of Test Series 3 type (a), (b), and (d) of section 13 of that manual.
An article that— (a) contains a primary explosive substance, and less than 2 effective protective fea- tures; or is designed to be a primer, detonator, or detonator assembly for blasting.

(b) A propellant explosive substance or an article con- taining a propellant explosive substance.
(a) (b) (c) a secondary detonating explosive sub- stance that— (i) is less sensitive than primary ex- plosive substances and more sen- sitive than substances falling into category N; and is without a means of initiation and without a propelling charge; or (ii) an article containing those secondary det- onating explosive substances that is with- out a means of initiation and without a pro- pelling charge; or an article containing a primary explosive substance and 2 or more effective protect- ive features.
An article containing a secondary detonating ex- plosive substance that is without a means of ini- tiation but with a propelling charge (other than a charge containing a flammable liquid, or hyper- golic liquids).
13 Schedule 1 Hazardous Substances (Classification) Regulations 2001 Reprinted as at 1 June 2001 Part 2—continued Criteria for each category (b) (a) (b) (c) An article containing a secondary detonating ex- plosive substance that— (a) has its own means of initiation (being an article containing a primary explosive sub- stance designed to initiate the secondary explosive substance); and is with or without a propelling charge (other a containing charge flammable liquid or hypergolic liquids).
than a a pyrotechnic substance; or an article that contains a pyrotechnic sub- stance; or an article containing both an explosive sub- stance and an illuminating, incendiary, tear, or smoke-producing substance (other than a water-activated article or an article con- taining white phosphorus, a phosphide, a pyrophoric substance, a flammable liquid, or hypergolic liquids).

An article containing both an explosive substance and white phosphorus.
An article containing both an explosive substance and a flammable liquid.

An article containing both— (a) (b) an explosive substance; and a substance with a hazard classification of 6.1A, 6.1B, or 6.1C.
A mixture or an article that contains both— an explosive substance; and (a) a substance that— (b) (i) spontaneously combusts, deto- nates, or deflagrates, when ex- posed to air, water, oxidising sub- stances, or flammable substances; or generates a substance that spon- taneously combusts, detonates, or deflagrates when exposed to air or water.
(ii) Category F G H J K L 14 Reprinted as at 1 June 2001 Hazardous Substances (Classification) Regulations 2001 Schedule 1 Part 2—continued Category N S see regulation 6(3) Note: for cases where category S applies.

Criteria for each category An article containing only extremely insensitive detonating substances as defined in the criteria for subclass 1.6.
A substance, or an article, that meets the cri- teria of either paragraph 16.6.1.4.6 or paragraph 16.6.1.4.7(a)(i) of the UN Manual of Tests and Criteria when tested as prescribed in Test Series 6 type (c) of paragraph 16.6 of that manual.
15 Schedule 2 Hazardous Substances (Classification) Regulations 2001 Reprinted as at 1 June 2001 Schedule 2 Classification criteria for flammable substances r 7 Interpretation In this schedule, unless the context otherwise requires,— aerosol has the meaning set out in item 2.1.2A of the table in clause 2 flammable ingredient has the same meaning as it has in Schedule 2 of the Hazardous Substances (Minimum Degrees of Hazard) Regulations 2001 flammable range has the same meaning as it has in Schedule 2 of the Hazardous Substances (Minimum Degrees of Hazard) Regulations 2001 flash point has the same meaning as it has in regulation 3 of the Hazardous Substances (Minimum Degrees of Hazard) Regulations 2001 IBP (initial boiling point) means the temperature at which a flammable substance begins to boil at a pressure of 101.3 kilo- pascals absolute self-reactive substance means a substance that does not meet the criteria for classes 1 or 5, but— (a) has a SADT less than or equal to 75 degrees Celsius in a quantity of 50 kilograms and has a heat of decompo- sition greater than or equal to 300 joules per gram; or is listed in paragraph 2.4.2.3.2.3 of the UN Model Regu- lations as having a class or division of self-reactive.
(b) Table of hazard classifications Flammable substances are classified according to the criteria set out in the table in this schedule.

The hazard classifications are set out in the first column and the criteria for each hazard classification are set out in the second column.
1 2 16 Reprinted as at 1 June 2001 Hazardous Substances (Classification) Regulations 2001 Schedule 2 Table of hazard classifications Hazard classification Criteria for each hazard classification 2.1.1A—Flammable gases: high hazard (a) (b) a gas or gas mixture that, at 20 degrees Cel- sius and at a pressure of 101.3 kilopascals absolute, is ignitable when in a mixture of 13% or less by volume with air; or a gas or gas mixture that, at 20 degrees Celsius and at a pressure of 101.3 kilopas- cals absolute, has a flammable range with air of at least 12 percentage points regard- less of the lower flammability limit, where flammability is determined when tested in accordance with the test procedure for de- termining the flammability of gases and gas mixtures as prescribed in section 5 ISO 10156:1996.
2.1.1B—Flammable gases: medium hazard 2.1.2A—Flammable aerosols 3.1A—Flammable very high hazard liquids: 3.1B—Flammable high hazard liquid: 3.1C—Flammable medium hazard liquids: 3.1D—Flammable low hazard liquids: A gas or gas mixture, other than one of high hazard, that is sufficiently flammable to be capable of ig- nition when mixed with air in a proportion within a flammable range at 20 degrees Celsius and at a pressure of 101.3 kilopascals absolute.
An aerosol comprising 45% or more by mass of flammable ingredients.

An aerosol is a substance packed under pressure in a way that is designed to be released as solid or liquid particles in suspen- sion in a gas, as a foam, paste, or powder, or in a liquid or in a gaseous state.

A flammable liquid that has a flash point of less than 23 degrees Celsius and has an IBP of less than or equal to 35 degrees Celsius.
A flammable liquid that has a flash point of less than 23 degrees Celsius and has an IBP of greater than 35 degrees Celsius.

A flammable liquid that has a flash point of greater than or equal to 23 degrees Celsius, but less than or equal to 60 degrees Celsius.

A flammable liquid that has a flash point of greater than 60 degrees Celsius, but less than or equal to 93 degrees Celsius.
17 Schedule 2 Hazardous Substances (Classification) Regulations 2001 Reprinted as at 1 June 2001 Hazard classification Criteria for each hazard classification 3.2A—Liquid explosives: high hazard desensitised (a) (b) a substance that— (i) (ii) (ii) a liquid desensitised explosive that— (i) is listed in paragraph 2.3.1.4 of the UN Model Regulations as a liquid desensitised explosive; and is assigned Packing Group I in the Dangerous Goods List in Chapter 3.2 of the UN Model Regulations; or is formed from an explosive of Class 1 by adding a desensitising agent to form a liquid substance that no longer meets the threshold for Class 1; and is not listed in the UN Model Regulations, and is not assigned a packing group in the UN Model Regulations.
3.2B—Liquid explosives: medium hazard desensitised 3.2C—Liquid explosives: low hazard desensitised 4.1.1A—Readily com- bustible solids and solids that may cause fire through fric- tion: medium hazard 18 (b) (b) (a) (b) A substance that— (a) is listed in paragraph 2.3.1.4 of the UN Model Regulations as a liquid desensitised explosive; and is assigned Packing Group II in the Dan- gerous Goods List in Chapter 3.2 of the UN Model Regulations.
A substance that— (a) is listed in paragraph 2.3.1.4 of the UN Model Regulations as a liquid desensitised explosive; and is assigned Packing Group III in the Dan- gerous Goods List in Chapter 3.2 of the UN Model Regulations.
a substance (other than a metal powder) that, when tested as prescribed in the burn- ing rate test of Test Series N.1, paragraph 33.2.1.4 of the UN Manual of Tests and Criteria, has a burning time of less than 45 seconds and the flame passes the wet- ted zone; or a powder of metal or metal alloys that pro- duces a zone of reaction that spreads over the whole length of the sample in 5 min- utes or less when tested as prescribed in the burning rate test of Test Series N.1, para- graph 33.2.1.4 of the UN Manual of Tests and Criteria; or Reprinted as at 1 June 2001 Hazardous Substances (Classification) Regulations 2001 Schedule 2 Criteria for each hazard classification (c) Hazard classification 4.1.1B—Readily com- bustible solids and solids that may cause fire through fric- tion: low hazard (d) (a) (b) (c) (d) a substance that is listed in the Danger- ous Goods List in Chapter 3.2 of the UN Model Regulations with the serial number UN 1343; or any other substance that may cause fire through friction and where, when tested as prescribed in Test Series 3 type (b), para- graph 13.5 of the UN Manual of Tests and Criteria, the amount of friction required to cause ignition is less than 120% of that for any of the substances in paragraph (c).
a substance (other than a metal powder) that, when tested as prescribed in the burn- ing rate test of Test Series N.1, paragraph 33.2.1.4 of the UN Manual of Tests and Criteria, has a burning time of less than 45 seconds and the wetted zone stops the flame propagation for at least 4 minutes; or a powder of metal or metal alloys that, when tested as prescribed in the burning rate test of Test Series N.1, paragraph 33.2.1.4 of the UN Manual of Tests and Criteria, produces a reaction which spreads over the whole length of the sample in more than 5 minutes, but not more than 10 minutes; or a substance that is listed in the Danger- ous Goods List in Chapter 3.2 of the UN Model Regulations with one of the fol- lowing UN serial numbers: UN 1331, UN 1944, UN 1945, or UN 2254; or any other substance that may cause fire through friction and where, when tested as prescribed in Test Series 3 type (b), para- graph 13.5 of the UN Manual of Tests and Criteria, the amount of friction required to cause ignition is less than 120% of that for any of the substances in paragraph (c).
19 Schedule 2 Hazardous Substances (Classification) Regulations 2001 Reprinted as at 1 June 2001 Hazard classification Criteria for each hazard classification (ii) (ii) (iii) (iv) (ii) (iii) a substance that— (i) a substance that— (i) propagates a detonation when tested as prescribed in Test Series A; and propagates a detonation when det- onated under confinement as pre- scribed in Test Series B; or propagates a detonation when tested as prescribed in Test Series A; and does not propagate a detonation when detonated under confine- ment as prescribed in Test Series B; and propagates a rapid deflagration when tested as prescribed in Test Series C; and propagates a rapid deflagration when ignited under confinement as prescribed in Test Series D; or propagates a partial detonation when tested as prescribed in Test Series A; and propagates a rapid deflagration when tested as prescribed in Test Series C; and propagates a rapid deflagration when ignited under confinement as prescribed in Test Series D; or does not propagate a detonation when tested as prescribed in Test Series A; and propagates a rapid deflagration when tested as prescribed in Test Series C; and propagates a rapid deflagration when ignited under confinement as prescribed in Test Series D. a substance that— (i) a substance that— (i) 4.1.2A—Self-reactive stances: type A sub- (a) (b) (c) (d) (ii) (iii) 20 Reprinted as at 1 June 2001 Hazardous Substances (Classification) Regulations 2001 Schedule 2 Hazard classification Criteria for each hazard classification 4.1.2B—Self-reactive stances: type B sub- (a) (b) (c) (d) a substance that— (i) a substance that is listed in the UN Model Regulations as having a class or division of 4.1 and is designated as type B; or a substance that— (i) (ii) (iii) (iv) (v) (vi) (ii) (iii) (iv) (v) (ii) propagates a detonation when tested as prescribed in Test Series A; and does not propagate a detonation when detonated under confine- ment as prescribed in Test Series B; and propagates a rapid deflagration when tested as
 prescribed in Test Series C; and does not propagate a rapid defla- gration when ignited under con- finement as prescribed in Test Ser- ies D; and exhibits violent effect when heated under confinement as prescribed in Test Series E; and undergoes a thermal explosion when heated under confinement as prescribed in Test Series G; or propagates a detonation when tested as prescribed in Test Series A; and does not propagate a detonation when detonated under confine- ment as prescribed in Test Series B; and either propagates a slow deflagra- tion or does not propagate a defla- gration when tested as prescribed in Test Series C; and exhibits violent effect when heated under confinement as prescribed in Test Series E; and undergoes a thermal explosion when heated under confinement as prescribed in Test Series G; or propagates a partial detonation when tested as prescribed in Test Series A; and propagates a rapid deflagration when tested as prescribed in Test Series C; and 21 a substance that— (i) Schedule 2 Hazardous Substances (Classification) Regulations 2001 Reprinted as at 1 June 2001 Hazard classification Criteria for each hazard classification (iii) (iv) (v) does not propagate a rapid defla- gration when ignited under con- finement as prescribed in Test Ser- ies D; and exhibits a violent effect when heated under confinement as pre- scribed in Test Series E; and undergoes a thermal explosion when heated under confinement as prescribed in Test Series G; or a substance that— (i) (e) (f) (g) (ii) (iii) (iv) (ii) (iii) (iv) (v) a substance that— (i) propagates a partial detonation when tested as prescribed in Test Series A; and either propagates a slow deflagra- tion or does not propagate a defla- gration when tested as prescribed in Test Series C; and exhibits violent effect when heated under confinement as prescribed in Test Series E; and undergoes a thermal explosion when heated under confinement as prescribed in Test Series G; or does not propagate a detonation when
 tested as prescribed in Test Series A; and propagates a rapid deflagration when tested as prescribed in Test Series C; and does not propagate a rapid defla- gration when ignited under con- finement as prescribed in Test Ser- ies D; and exhibits violent effect when heated under confinement as prescribed in Test Series E; and undergoes a thermal explosion when heated under confinement as prescribed in Test Series G; or does not propagate a detonation when tested as prescribed in Test Series A; and propagates a slow deflagration when tested as prescribed in Test Series C; and a substance that— (i) (ii) 22 Reprinted as at 1 June 2001 Hazardous Substances (Classification) Regulations 2001 Schedule 2 Hazard classification Criteria for each hazard classification (iii) (iv) exhibits violent effect when heated under confinement as prescribed in Test Series E; and undergoes a thermal explosion when heated under confinement as prescribed in Test Series G; or (h) 4.1.2C—Self-reactive stances: type C sub- (a) (b) a substance that— (i) does not propagate a detonation when tested as prescribed in Test Series A; and does not propagate a deflagration when tested as prescribed in Test Series C; and exhibits violent effect when heated under confinement as prescribed in Test Series E; and undergoes a thermal explosion when heated under confinement as prescribed in Test Series G. a substance that is listed in the UN Model Regulations as having a class or division of 4.1 and is designated as type C; or a substance that— (i) propagates a detonation when tested as prescribed in Test Series A; and does not propagate a detonation when detonated under confine- ment as prescribed in Test Series B; and propagates a rapid deflagration when tested as prescribed in Test Series C; and does not propagate a rapid defla- gration when ignited under con- finement as prescribed in Test Ser- ies D; and exhibits violent effect when heated under confinement as prescribed in Test Series E; and does not
 undergo a thermal explo- sion when heated under confine- ment as prescribed in Test Series G; or (ii) (iii) (iv) (ii) (iii) (iv) (v) (vi) (c) a substance that— (i) propagates a detonation when tested as prescribed in Test Series A; and 23 Schedule 2 Hazardous Substances (Classification) Regulations 2001 Reprinted as at 1 June 2001 Hazard classification Criteria for each hazard classification (ii) (iii) (iv) (v) does not propagate a detonation when detonated under confine- ment as prescribed in Test Series B; and either propagates a slow deflagra- tion or does not propagate a defla- gration when tested as prescribed in Test Series C; and exhibits violent effect when heated under confinement as prescribed in Test Series E; and does not undergo a thermal explo- sion when heated under confine- ment as prescribed in Test Series G; or a substance that— (i) (d) (e) (ii) (iii) (iv) (v) propagates a detonation when tested as prescribed in Test Series A; and does not propagate a detonation when detonated under confine- ment as prescribed in Test Series B; and propagates a rapid deflagration when tested as prescribed in Test Series C; and does not propagate a rapid defla- gration when ignited under con- finement as prescribed in Test Ser- ies D; and exhibits medium effect, low effect, or no effect when heated under confinement as prescribed in Test Series E; or propagates a detonation when tested as prescribed in Test Series A; and does not propagate a detonation when detonated under confine- ment as prescribed in Test Series B; and either propagates a slow deflagra- tion or does not propagate a defla- gration when tested as prescribed in Test Series C; and exhibits medium effect, low effect, or no effect when heated under a substance that— (i) (ii) (iii) (iv) 24 Reprinted as at 1 June 2001 Hazardous Substances (Classification) Regulations 2001 Schedule 2 Hazard classification Criteria for each hazard classification confinement as prescribed in Test Series E; or a substance
 that— (i) (f) (g) (h) a substance that— (i) (ii) (iii) (iv) (v) (ii) (iii) (iv) (ii) (iii) (iv) propagates a partial detonation when tested as prescribed in Test Series A; and propagates a rapid deflagration when tested as prescribed in Test Series C; and does not propagate a rapid defla- gration when ignited under con- finement as prescribed in Test Ser- ies D; and exhibits violent effect when heated under confinement as prescribed in Test Series E; and does not undergo a thermal explo- sion when heated under confine- ment as prescribed in Test Series G; or propagates a partial detonation when tested as prescribed in Test Series A; and propagates a rapid deflagration when tested as prescribed in Test Series C; and does not propagate a rapid defla- gration when ignited under con- finement as prescribed in Test Ser- ies D; and exhibits medium effect, low effect, or no effect when heated under confinement as prescribed in Test Series E; or propagates a partial detonation when tested as prescribed in Test Series A; and propagates a slow or no deflagra- tion when tested as prescribed in Test Series C; and exhibits violent effect when heated under confinement as prescribed in Test Series E; and does not undergo a thermal explo- sion when heated under confine- ment as prescribed in Test Series G; or 25 a substance that— (i) Schedule 2 Hazardous Substances (Classification) Regulations 2001 Reprinted as at 1 June 2001 Hazard classification Criteria for each hazard classification (i) a substance that— (i) a substance that— (i) (ii) (iii) (iv) (v) (ii) (iii) (iv) (ii) (iii) (iv) does not propagate a detonation when tested as prescribed in Test Series A; and propagates a rapid deflagration when tested as prescribed in Test Series C; and does not propagate a rapid defla- gration when ignited under con- finement as prescribed in Test Ser- ies D; and exhibits violent effect when heated under confinement as prescribed in Test Series E; and does not undergo a thermal explo- sion
 when heated under confine- ment as prescribed in Test Series G; or does not propagate a detonation when tested as prescribed in Test Series A; and propagates a rapid deflagration when tested as prescribed in Test Series C; and does not propagate a rapid defla- gration when ignited under con- finement as prescribed in Test Ser- ies D; and exhibits medium effect, low effect, or no effect when heated under confinement as prescribed in Test Series E; or does not propagate a detonation when tested as prescribed in Test Series A; and propagates a slow deflagration when tested as prescribed in Test Series C; and exhibits violent effect when heated under confinement as prescribed in Test Series E; and does not undergo a thermal explo- sion when heated under confine- ment as prescribed in Test Series G; or a substance that— (i) (j) (k) (l) a substance that— 26 Reprinted as at 1 June 2001 Hazardous Substances (Classification) Regulations 2001 Schedule 2 Hazard classification Criteria for each hazard classification (i) (ii) (iii) (iv) does not propagate a detonation when tested as prescribed in Test Series A; and does not propagate a deflagration when tested as prescribed in Test Series C; and exhibits violent effect when heated under confinement as prescribed in Test Series E; and does not undergo a thermal explo- sion when heated under confine- ment as prescribed in Test Series G. sub- 4.1.2D—Self-reactive stances: type D Note: see regulation 7(4)(a) for cases where category D applies.
(a) (b) (c) (d) a substance that is listed in the UN Model Regulations as having a class or division of 4.1 and is designated as type D; or a substance that— (i) (ii) (iii) (ii) (iii) (ii) (iii) a substance that— (i) a substance that— (i) propagates a partial detonation when tested as prescribed in Test Series A; and propagates a slow or no deflagra- tion when tested as prescribed in Test Series C; and exhibits medium effect, low effect, or no effect when heated under confinement as prescribed in Test Series E; or does not propagate a detonation when tested as prescribed in Test Series A; and propagates a slow deflagration when tested as prescribed in Test Series C; and exhibits medium effect, low effect, or no effect when heated under confinement as prescribed in Test Series E; or does not propagate a detonation when tested as prescribed in Test Series A; and does not propagate a deflagration when tested as prescribed in Test Series C; and exhibits medium effect when heated under confinement as pre- scribed in Test Series E. 27 Schedule 2 Hazardous Substances (Classification) Regulations 2001 Reprinted as at 1 June 2001 Hazard classification Criteria for each hazard classification 4.1.2E—Self-reactive stances: type E sub- (a) (b) (c) 4.1.2F—Self-reactive stances: type F sub- (a) (b) (ii) (iii) (iv) 28 a substance that is listed in the UN Model Regulations as having a class or division of 4.1 and is designated as type E; or a substance that— (i) (ii) (iii) (iv) (ii) (iii) (iv) (v) does not propagate a detonation when tested as prescribed in Test Series A; and does not propagate a deflagration when tested as prescribed in Test Series C; and exhibits low effect, or no effect, when heated under confinement as prescribed in Test Series E; and is not intended to be stored or transported in bulk, or no data is available for Test Series F; or does not propagate a detonation when tested as prescribed in Test Series A; and does not propagate a deflagration when tested as prescribed in Test Series C; and exhibits low
 effect, or no effect, when heated under confinement as prescribed in Test Series E; and is intended to be stored or trans- ported in bulk; and exhibits a “not low” explosive power when tested as prescribed in Test Series F, or no data is avail- able for Test Series F. a substance that— (i) a substance that is listed in the UN Model Regulations as having a class or division of 4.1 and is designated as type F; or a substance that— (i) does not propagate a detonation when tested as prescribed in Test Series A; and does not propagate a deflagration when tested as prescribed in Test Series C; and exhibits low effect, or no effect, when heated under confinement as prescribed in Test Series E; and when tested for bulk containers, exhibits a low effect when heated Reprinted as at 1 June 2001 Hazardous Substances (Classification) Regulations 2001 Schedule 2 Hazard classification Criteria for each hazard classification (c) (d) (v) (ii) under confinement as prescribed in Test Series E; and when tested for bulk containers, exhibits no explosive power when tested as prescribed in Test Series F; or a substance that— (i) does not propagate a detonation when tested as prescribed in Test Series A; and does not propagate a deflagration when tested as prescribed in Test Series C; and exhibits low effect, or no effect, when heated under confinement as prescribed in Test Series E; and is intended to be stored or trans- ported in bulk; and low explosive power exhibits when tested as prescribed in Test Series F; or a substance that— (i) (iii) (iv) (v) (ii) (iii) (iv) (v) does not propagate a detonation when tested as prescribed in Test Series A; and does not propagate a deflagration when tested as prescribed in Test Series C; and exhibits no effect when heated under confinement as prescribed in Test Series E, including when assessed for bulk containers; and exhibits no explosive power when tested as prescribed in Test Series F; and has a SADT less than 60 degrees Celsius for a 50 kg
 quantity of the substance or, if the substance is a mixture that contains a solvent or desensitising agent, that solvent or desensitising agent has a boiling point less than 150 degrees Cel- sius.
29 Schedule 2 Hazardous Substances (Classification) Regulations 2001 Reprinted as at 1 June 2001 Hazard classification Criteria for each hazard classification 4.1.2G—Self-reactive stances: type G sub- A substance that— (a) (b) (c) (d) (e) does not propagate a detonation when tested as prescribed in Test Series A; and does not propagate a deflagration when tested as prescribed in Test Series C; and exhibits no effect when heated under con- finement as prescribed in Test Series E, in- cluding when assessed for bulk containers; and exhibits no explosive power when tested as prescribed in Test Series F; and has a SADT greater than or equal to 60 de- grees Celsius for a 50 kg quantity of the substance and, if the substance is a mix- ture that contains a solvent or desensitising agent, that solvent or desensitising agent is a liquid that has a boiling point greater than or equal to 150 degrees Celsius.
4.1.3A—Solid explosives: high hazard desensitised (a) (b) 4.1.3B—Solid explosives: medium hazard desensitised (a) (b) a substance that is listed in the Dangerous Goods List in Chapter 3.2 of the UN Model Regulations with one of the following UN serial numbers: UN 1310, UN 1320, UN 1321, UN 1322, UN 1336, UN 1337, UN 1344, UN 1347, UN 1348, UN 1349, UN 1354, UN 1356, UN 1357, UN 1517, UN 1571, UN 2852, or UN 3317; or a solid desensitised explosive that is formed from an explosive of Class 1 by adding a desensitising agent to form a solid substance that no longer meets the threshold for Class 1. a substance that is listed in the Dangerous Goods List in Chapter 3.2 of the UN Model Regulations with one of the following UN serial numbers: UN 2555, UN 2556, UN 2557, UN 2907, UN 3319, or UN 3344; or a substance listed in the Dangerous Goods List in Chapter 3.2 of the UN Model Regu- lations with UN serial number UN 3242.
4.1.3C—Solid explosives: low hazard desensitised A substance that is listed in the Dangerous Goods List in Chapter 3.2 of the UN Model Regulations with one of the following UN serial numbers: UN 2956, UN 3241, or UN 3251.
30 Reprinted as at 1 June 2001 Hazardous Substances (Classification) Regulations 2001 Schedule 2 Hazard classification Criteria for each hazard classification 4.2A—Spontaneously com- py- bustible substances: rophoric substances: high hazard (a) (b) a solid substance that does not meet the cri- teria for subclass 4.1.2, but ignites within 5 minutes on contact with air when tested as prescribed in Test Series N.2, paragraph 33.3.1.4 of the UN Manual of Tests and Criteria; or a substance that does not meet the criteria for subclass 4.1.2, but is a liquid and— (i) ignites when tested as prescribed in Test Series N.3, paragraph 33.3.1.5.3.1 of the UN Manual of Tests and Criteria; or ignites or chars the filter paper when tested as prescribed in para- graph 33.3.1.5.3.2 of that test.
(ii) 4.2B—Spontaneously com- bustible substances: self- heating substances: medium hazard A substance that does not meet the criteria for subclass 4.1.2, but meets the criteria of paragraph 33.3.1.6.4.3 when tested as prescribed in Test Ser- ies N.4, paragraph 33.3.1.6 of the UN Manual of Tests and Criteria.
4.2C—Spontaneously com- self- bustible substances: heating substances: low haz- ard (a) (b) (c) a substance that does not meet the criteria for subclass 4.1.2, but is in a volume of more than 3 cubic metres and gives a posi- tive result when tested using a 100 mil- limetre sample cube at 140 degrees Cel- sius as prescribed in Test Series N.4, para- graph 33.3.1.6 of the UN Manual of Tests and Criteria; or a substance that does not meet the criteria for subclass 4.1.2, but is in a volume of more that 450 litres and gives a positive result when tested using a 100 millimetre sample cube at 140 degrees Celsius, and gives a positive result when tested using a 100 millimetre sample cube at 120 degrees Celsius, which tests are as prescribed in Test Series N.4, paragraph 33.3.1.6 of the UN Manual of Tests and Criteria; or a substance that does not meet the criteria for subclass 4.1.2, but gives a positive re- sult when tested using a 100 millimetre sample cube at 140 degrees Celsius, and gives a positive result when tested using a 100 millimetre sample cube at 100 de- grees Celsius, which tests are as prescribed in Test Series N.4, paragraph 33.3.1.6 of the UN Manual of Tests and Criteria.
31 Schedule 2 Hazardous Substances (Classification) Regulations 2001 Reprinted as at 1 June 2001 Hazard classification Criteria for each hazard classification 4.3A—Solids emit flammable gas when in con- tact with water: high hazard that (a) (b) a substance that emits a gas that ignites when a small quantity of the substance is brought into contact with water as prescribed in Test Series N.5, paragraph 33.4.1.4 of the UN Manual of Tests and Criteria; or a substance that reacts readily with water at ambient temperatures so that the rate of evolution of flammable gas is greater than or equal to 10 litres per kilogram of substance over any 1 minute when tested as prescribed in Test Series N.5, paragraph 33.4.1.4 of the UN Manual of Tests and Criteria.
that 4.3B—Solids emit flammable gas when in con- tact with water: medium haz- ard 4.3C—Solids emit flammable gas when in con- tact with water: low hazard that A substance that reacts readily with water at ambi- ent temperatures so that the maximum rate of evo- lution of flammable gas is greater than or equal to 20 litres of gas per kilogram of substance per hour, but less than 10 litres per kilogram per minute, when tested as prescribed in Test Series N.5, para- graph 33.4.1.4 of the UN Manual of Tests and Cri- teria.
A substance that reacts slowly with water at ambi- ent temperatures so that the maximum rate of evo- lution of flammable gas is equal to or greater than 1 litre of gas per kilogram of substance per hour, but less than 20 litres per kilogram per hour, when tested as prescribed in Test Series N.5, paragraph 33.4.1.4 of the UN Manual of Tests and Criteria.
32 Reprinted as at 1 June 2001 Hazardous Substances (Classification) Regulations 2001 Schedule 3 Schedule 3 Classification criteria for oxidising substances and organic peroxides r 8 1 2 Form of substance for testing If any solid substance is tested for the purposes of determining its hazard classification, the result must be determined using either— (a) the finest particle form in which that substance is rea- sonably capable of being used or rendered; or if it is likely or known that more than 10% of the mass of the substance will crumble into a finer particle form, then that finer form.
(b) Table of hazard classifications Oxidising substances are classified according to the criteria set out in the table in this schedule.

The hazard classifications are set out in the first column and the criteria for each hazard classification are set out in the second column.
Table of hazard classifications Hazard classification Criteria for each hazard classification 5.1.1A—Oxidising sub- stances that are liquids or solids: high hazard (a) (b) (c) a substance that is listed in the UN Model Regulations as having a class, division, or subsidiary risk of 5.1, and is assigned Packing Group I; or a solid that when mixed with dried cel- lulose forms a mixture that either sponta- neously ignites or exhibits a mean burn- ing time less than the mean burning time of a 3:2 reference mixture by mass of potas- sium bromate and cellulose under the same conditions when tested as prescribed in Test Series O.1, paragraph 34.4.1 of the UN Manual of Tests and Criteria; or a liquid that when mixed with dry cellu- lose forms a mixture that either sponta- neously ignites or exhibits a mean pres- sure rise time less than the mean pressure rise time of a 1:1 reference mixture by mass of 50% perchloric acid and cellulose under the same conditions when tested as prescribed in Test Series O.2, paragraph 33 Schedule 3 Hazardous Substances (Classification) Regulations 2001 Reprinted as at 1 June 2001 Hazard classification Criteria for each hazard classification (a) (b) (c) (a) (b) (c) 34.4.2 of the UN Manual of Tests and Cri- teria.
a substance that is listed in the UN Model Regulations as having a class, division, or subsidiary risk of 5.1, and is assigned Packing Group II; or a solid that does not meet the criteria of cat- egory A and that when mixed with dry cel- lulose forms a mixture that exhibits a mean burning time equal to or less than the mean burning time of a 2:3 reference mixture by mass of potassium bromate and cellulose under the same conditions when tested as prescribed in Test Series O.1, paragraph 34.4.1 of the UN Manual of Tests and Cri- teria; or a liquid that does not meet the criteria of category A and that when mixed with dry cellulose forms a mixture that exhibits a mean pressure rise time less than or equal to the mean pressure rise time of a 1:1 reference mixture by mass of 40% aque- ous sodium chlorate solution and cellulose under the same conditions when tested as prescribed in Test Series O.2, paragraph 34.4.2 of the UN Manual of Tests and Cri- teria.
a substance that is listed in the UN Model Regulations as having a class, division, or subsidiary risk of 5.1, and is assigned Packing Group III; or a solid that does not meet the criteria of cat- egory A or category B and that when mixed with dry cellulose forms a mixture that ex- hibits a mean burning time equal to or less than the mean burning time of a 3:7 ref- erence mixture by mass of potassium bro- mate and cellulose under the same condi- tions when tested as prescribed in Test Ser- ies O.1, paragraph 34.4.1 of the UN Man- ual of Tests and Criteria; or a liquid that does not meet the criteria of category A or category B and that when mixed with dry cellulose forms a mixture that exhibits a mean pressure rise time less than or equal to the mean pressure rise time of a 1:1 reference mixture by mass of 65% aqueous nitric acid and cellulose under the 5.1.1B—Oxidising sub- stances that are liquids or solids: medium hazard 5.1.1C—Oxidising sub- stances that are liquids or solids: low hazard 34 Reprinted as at 1 June 2001 Hazardous Substances (Classification) Regulations 2001 Schedule 3 Hazard classification Criteria for each hazard classification 5.1.2A—Oxidising stances that are gases sub- (a) (b) 5.2A—Organic type A peroxides: (a) (b) (c) (d) same conditions when tested as prescribed in Test Series O.2, paragraph 34.4.2 of the UN Manual of Tests and Criteria.
a gas that is listed in the UN Model Regu- lations as having a class, division, or sub- sidiary risk of 5.1; or a gas that causes or contributes to com- bustion of other material at a faster rate than air when tested in accordance with the test procedure for determining the oxidis- ing power of gases and gas mixtures as set out in section 5 of ISO 10156:1996. an organic peroxide that— (i) an organic peroxide that— (i) propagates a detonation when tested as prescribed in Test Series A; and propagates a detonation when det- onated under confinement as pre- scribed in Test Series B; or propagates a detonation when tested as prescribed in Test Series A; and does not propagate a detonation when detonated under confine- ment as prescribed in Test Series B; and propagates a rapid deflagration when tested as prescribed in Test Series C; and propagates a rapid deflagration when ignited under confinement as prescribed in Test Series D; or propagates a partial detonation when tested as prescribed in Test Series A; and propagates a rapid deflagration when tested as prescribed in Test Series C; and propagates a rapid deflagration when ignited under confinement as prescribed in Test Series D; or (ii) (ii) (iii) (iv) (ii) (iii) an organic peroxide that— (i) an organic peroxide that— (i) does not propagate a detonation when tested as prescribed in Test Series A; and 35 Schedule 3 Hazardous Substances (Classification) Regulations 2001 Reprinted as at 1 June 2001 Hazard classification Criteria for each hazard classification (ii) (iii) propagates a rapid deflagration when tested as prescribed in Test Series C; and propagates a rapid deflagration when ignited under confinement as prescribed in Test Series D. 5.2B—Organic type B peroxides: (a) (b) (c) (ii) (iii) (iv) (v) (vi) (ii) (iii) (iv) (v) 36 a substance that is listed in the UN Model Regulations as having a class or division of 5.2 and is designated as type B; or an organic peroxide that— (i) propagates a detonation when tested as prescribed in Test Series A; and does not
 propagate a detonation when detonated under confine- ment as prescribed in Test Series B; and propagates a rapid deflagration when tested as prescribed in Test Series C; and does not propagate a rapid defla- gration when ignited under con- finement as prescribed in Test Ser- ies D; and exhibits violent effect when heated under confinement as prescribed in Test Series E; and undergoes a thermal explosion when heated under confinement as prescribed in Test Series G; or propagates a detonation when tested as prescribed in Test Series A; and does not propagate a detonation when detonated under confine- ment as prescribed in Test Series B; and either propagates a slow deflagra- tion or does not propagate a defla- gration when tested as prescribed in Test Series C; and exhibits violent effect when heated under confinement as prescribed in Test Series E; and undergoes a thermal explosion when heated under confinement as prescribed in Test Series G; or an organic peroxide that— (i) Reprinted as at 1 June 2001 Hazardous Substances (Classification) Regulations 2001 Schedule 3 Hazard classification Criteria for each hazard classification an organic peroxide that— (d) (i) (e) (f) an organic peroxide that— (i) propagates a partial detonation when tested as prescribed in Test Series A; and propagates a rapid deflagration when tested as prescribed in Test Series C; and does not propagate a rapid defla- gration when ignited under con- finement as prescribed in Test Ser- ies D; and exhibits violent effect when heated under confinement as prescribed in Test Series E; and undergoes a thermal explosion when heated under confinement as prescribed in Test Series G; or propagates a partial detonation when tested as prescribed in Test Series A; and either propagates a slow deflagra- tion or no deflagration when tested as prescribed in Test Series C; and exhibits violent effect when heated under confinement as prescribed in Test Series E; and undergoes a thermal explosion when heated under
 confinement as prescribed in Test Series G; or does not propagate a detonation when tested as prescribed in Test Series A; and propagates a rapid deflagration when tested as prescribed in Test Series C; and does not propagate a rapid defla- gration when ignited under con- finement as prescribed in Test Ser- ies D; and exhibits violent effect when heated under confinement as prescribed in Test Series E; and undergoes a thermal explosion when heated under confinement as prescribed in Test Series G; or (ii) (iii) (iv) (v) (ii) (iii) (iv) (ii) (iii) (iv) (vi) an organic peroxide that— (i) (g) an organic peroxide that— 37 Schedule 3 Hazardous Substances (Classification) Regulations 2001 Reprinted as at 1 June 2001 Hazard classification Criteria for each hazard classification (i) (ii) (iii) (iv) does not propagate a detonation when tested as prescribed in Test Series A; and propagates a slow deflagration when tested as prescribed in Test Series C; and exhibits violent effect when heated under confinement as prescribed in Test Series E; and undergoes a thermal explosion when heated under confinement as prescribed in Test Series G; or (h) 5.2C—Organic type C peroxides: (a) (b) 38 an organic peroxide that— (i) does not propagate a detonation when tested as prescribed in Test Series A; and does not propagate a deflagration when tested as prescribed in Test Series C; and exhibits violent effect when heated under confinement as prescribed in Test Series E; and undergoes a thermal explosion when heated under confinement as prescribed in Test Series G. a substance that is listed in the UN Model Regulations as having a class or division of 5.2 and is designated as type C; or an organic peroxide that— (i) propagates a detonation when tested as prescribed in Test Series A; and does not propagate a detonation when detonated under confine- ment as prescribed in Test Series B; and propagates a rapid deflagration when tested as prescribed in Test Series C; and does not propagate a
 rapid defla- gration when ignited under con- finement as prescribed in Test Ser- ies D; and exhibits violent effect when heated under confinement as prescribed in Test Series E; and does not undergo a thermal explo- sion when heated under confine- (ii) (iii) (iv) (ii) (iii) (iv) (v) (vi) Reprinted as at 1 June 2001 Hazardous Substances (Classification) Regulations 2001 Schedule 3 Hazard classification Criteria for each hazard classification ment as prescribed in Test Series G; or (c) (d) (e) an organic peroxide that— (i) (ii) (iii) (iv) (v) propagates a detonation when tested as prescribed in Test Series A; and does not propagate a detonation when detonated under confine- ment as prescribed in Test Series B; and propagates a slow deflagration or no deflagration when tested as pre- scribed in Test Series C; and exhibits violent effect when heated under confinement as prescribed in Test Series E; and does not undergo a thermal explo- sion when heated under confine- ment as prescribed in Test Series G; or (ii) (iii) an organic peroxide that— (i) propagates a detonation when tested as prescribed in Test Series A; and does not propagate a detonation when detonated under confine- ment as prescribed in Test Series B; and propagates a rapid deflagration when tested as prescribed in Test Series C; and does not propagate a rapid defla- gration when ignited under con- finement as prescribed in Test Ser- ies D; and exhibits medium effect, low effect, or no effect when heated under confinement as prescribed in Test Series E; or an organic peroxide that— (i) (iv) (v) propagates a detonation when tested as prescribed in Test Series A; and does not propagate a detonation when detonated under confine- ment as prescribed in Test Series B; and (ii) 39 Schedule 3 Hazardous Substances (Classification) Regulations 2001 Reprinted as at 1 June 2001 Hazard classification Criteria for each hazard classification (iv) (iii) propagates a slow deflagration or no deflagration when tested as pre-
 scribed in Test Series C; and exhibits medium effect, low effect, or no effect when heated under confinement as prescribed in Test Series E; or an organic peroxide that— (i) (ii) (iii) (iv) (v) propagates a partial detonation when tested as prescribed in Test Series A; and propagates a rapid deflagration when tested as prescribed in Test Series C; and does not propagate a rapid defla- gration when ignited under con- finement as prescribed in Test Ser- ies D; and exhibits violent effect when heated under confinement as prescribed in Test Series E; and does not undergo a thermal explo- sion when heated under confine- ment as prescribed in Test Series G; or (ii) (iii) an organic peroxide that— (i) propagates a partial detonation when tested as prescribed in Test Series A; and propagates a rapid deflagration when tested as prescribed in Test Series C; and does not propagate a rapid defla- gration when ignited under con- finement as prescribed in Test Ser- ies D; and exhibits medium effect, low effect, or no effect when heated under confinement as prescribed in Test Series E; or an organic peroxide that— (i) (iv) propagates a partial detonation when tested as prescribed in Test Series A; and propagates a slow or no deflagra- tion when tested as prescribed in Test Series C; and (f) (g) (h) (ii) 40 Reprinted as at 1 June 2001 Hazardous Substances (Classification) Regulations 2001 Schedule 3 Hazard classification Criteria for each hazard classification (iii) (iv) exhibits violent effect when heated under confinement as prescribed in Test Series E; and does not undergo a thermal explo- sion when heated under confine- ment as prescribed in Test Series G; or (i) (j) (k) an organic peroxide that— (i) (ii) (iii) (iv) (v) does not propagate a detonation when tested as prescribed in Test Series A; and propagates a rapid deflagration when tested as prescribed in Test Series C; and does not propagate a rapid defla- gration when ignited under con- finement as prescribed in Test Ser- ies D;
 and exhibits violent effect when heated under confinement as prescribed in Test Series E; and does not undergo a thermal explo- sion when heated under confine- ment as prescribed in Test Series G; or (ii) (iii) an organic peroxide that— (i) does not propagate a detonation when tested as prescribed in Test Series A; and propagates a rapid deflagration when tested as prescribed in Test Series C; and does not propagate a rapid defla- gration when ignited under con- finement as prescribed in Test Ser- ies D; and exhibits medium effect, low effect, or no effect when heated under confinement as prescribed in Test Series E; or an organic peroxide that— (i) (iv) does not propagate a detonation when tested as prescribed in Test Series A; and propagates a slow deflagration when tested as prescribed in Test Series C; and (ii) 41 Schedule 3 Hazardous Substances (Classification) Regulations 2001 Reprinted as at 1 June 2001 Hazard classification Criteria for each hazard classification (iii) (iv) exhibits violent effect when heated under confinement as prescribed in Test Series E; and does not undergo a thermal explo- sion when heated under confine- ment as prescribed in Test Series G; or (l) peroxides: 5.2D—Organic type D Note: see regulation 8(3)(a) for cases where category D applies.
(a) (b) (c) (d) 42 an organic peroxide that— (i) (ii) (iii) (iv) does not propagate a detonation when tested as prescribed in Test Series A; and does not propagate a deflagration when tested as prescribed in Test Series C; and exhibits violent effect when heated under confinement as prescribed in Test Series E; and does not undergo a thermal explo- sion when heated under confine- ment as prescribed in Test Series G. (ii) (iii) a substance that is listed in the UN Model Regulations as having a class or division of 5.2 and is designated as type D; or an organic peroxide that— (i) propagates a partial detonation when tested as prescribed in Test Series A; and propagates a slow or no deflagra- tion when tested as prescribed in Test Series C; and exhibits medium effect, low effect, or no effect when heated under confinement as prescribed in Test Series E; or an organic peroxide that— (i) does not propagate a detonation when tested as prescribed in Test Series A; and propagates a slow deflagration when tested as prescribed in Test Series C; and exhibits medium effect, low effect, or no effect when heated under confinement as prescribed in Test Series E; or an organic peroxide that— (iii) (ii) Reprinted as at 1 June 2001 Hazardous Substances (Classification) Regulations 2001 Schedule 3 Hazard classification Criteria for each hazard classification (i) (ii) (iii) does not propagate a detonation when tested as prescribed in Test Series A; and does not propagate a deflagration when tested as prescribed in Test Series C; and exhibits medium effect when heated under confinement as pre- scribed in Test Series E. 5.2E—Organic type E peroxides: (a) (b) (c) a substance that is listed in the UN Model Regulations as having a class or division of 5.2 and is designated as type E; or an organic peroxide that— (i) an organic peroxide that— (i) (ii) (iii) (iv) (ii) (iii) (iv) does not propagate a detonation when tested as prescribed in Test Series A; and does not propagate a deflagration when tested as prescribed in Test Series C; and
 exhibits low effect, or no effect, when heated under confinement as prescribed in Test Series E; and intended to be stored or is not transported in bulk, or has no data available for Test Series F; or does not propagate a detonation when tested as prescribed in Test Series A; and does not propagate a deflagration when tested as prescribed in Test Series C; and exhibits low effect, or no effect, when heated under confinement as prescribed in Test Series E; and is intended to be stored or trans- ported in bulk, and displays a “not low” explosive power when tested as prescribed in Test Series F. 43 Schedule 3 Hazardous Substances (Classification) Regulations 2001 Reprinted as at 1 June 2001 Hazard classification Criteria for each hazard classification a substance that is listed in the UN Model Regulations as having a class or division of 5.2 and is designated as type F; or an organic peroxide that— (i) 5.2F—Organic type F peroxides: (a) (b) (c) (d) (ii) (iii) (iv) (v) (ii) (iii) (iv) (ii) (iii) 44 an organic peroxide that— (i) does not propagate a detonation when tested as prescribed in Test Series A; and does not propagate a deflagration when tested as prescribed in Test Series C; and exhibits low effect, or no effect, when heated under confinement as prescribed in Test Series E; and when tested for bulk containers, exhibits low effect when heated under confinement as prescribed in Test Series E; and when tested for bulk containers, displays no explosive power when tested as prescribed in Test Series F; or does not propagate a detonation when tested as prescribed in Test Series A; and does not propagate a deflagration when tested as prescribed in Test Series C; and exhibits low effect, or no effect, when heated under confinement as prescribed in Test Series E; and is intended to be stored or trans- ported in bulk, and exhibits low explosive power when tested as prescribed in Test Series F; or does not propagate a detonation when tested as prescribed in Test Series A;
 and does not propagate a deflagration when tested as prescribed in Test Series C; and exhibits no effect when heated under confinement as prescribed in Test Series E, including when it is assessed for bulk containers; and an organic peroxide that— (i) Reprinted as at 1 June 2001 Hazardous Substances (Classification) Regulations 2001 Schedule 3 Hazard classification Criteria for each hazard classification (iv) (v) exhibits no explosive power when tested as prescribed in Test Series F; and has a SADT less than 60 degrees Celsius for a 50 kg quantity of the substance or, if the substance is a mixture that contains a solvent or desensitising agent, that solvent or desensitising agent is not an or- ganic liquid with a boiling point greater than or equal to 150 de- grees Celsius.
5.2G—Organic type G peroxides: An organic peroxide that— (a) (b) (c) (d) (e) does not propagate a detonation when tested as prescribed in Test Series A; and does not propagate a deflagration when tested as prescribed in Test Series C; and exhibits no effect when heated under con- finement as prescribed in Test Series E, in- cluding when it is assessed for bulk con- tainers; and has no explosive power when tested as pre- scribed in Test Series F; and has an SADT greater than or equal to 60 degrees Celsius for a 50 kg quantity of the substance and, if the substance is a liquid mixture that contains a solvent or desensitising agent, that solvent or de- sensitising agent is an organic liquid that has a boiling point greater than or equal to 150 degrees Celsius.
45 Schedule 4 Hazardous Substances (Classification) Regulations 2001 Reprinted as at 1 June 2001 r 9 Schedule 4 Classification criteria for toxic substances Interpretation In this schedule, unless the context otherwise requires,— developmental effect has the same meaning as it has in Sched- ule 4 of the Hazardous Substances (Minimum Degrees of Haz- ard) Regulations 2001 dust or mist has the same meaning as it has in Schedule 4 of the Hazardous Substances (Minimum Degrees of Hazard) Regulations 2001 expert has the same meaning as it has in Schedule 4 of the Hazardous Substances (Minimum Degrees of Hazard) Regu- lations 2001 genotoxic effect has the same meaning as it has in Schedule 4 of the Hazardous Substances (Minimum Degrees of Hazard) Regulations 2001 LC50 means the median lethal concentration, being a statisti- cally derived concentration of a substance that can be expected to cause death in 50% of animals LD50 has the same meaning as it has in Schedule 4 of the Haz- ardous Substances (Minimum Degrees of Hazard) Regulations 2001 limited evidence in animals, in relation to a substance, means data that indicate a carcinogenic effect after exposure to the substance, but that are limited because— (a) the evidence of carcinogenicity is restricted to a single experiment; or there are unresolved questions regarding the adequacy of the design, or the conduct or interpretation of the study; or the substance increases the incidence only of benign tu- mours, or of lesions of uncertain neoplastic potential, or of tumours that may occur spontaneously in high inci- dence in certain strains of animal (b) (c) limited evidence in humans, in relation to a substance, means a positive correlation has been observed between exposure to the substance and the development of human cancer, where 1 46 Reprinted as at 1 June 2001 Hazardous Substances (Classification) Regulations 2001 Schedule 4 a causal relationship is credible, but where chance, bias, or confounding cannot be ruled out with reasonable confidence mean Draize score has
 the same meaning as it has in Schedule 4 of the Hazardous Substances (Minimum Degrees of Hazard) Regulations 2001 mutagenic effect has the same meaning as it has in Schedule 4 of the Hazardous Substances (Minimum Degrees of Hazard) Regulations 2001 reliable information has the same meaning as it has in Sched- ule 4 of the Hazardous Substances (Minimum Degrees of Haz- ard) Regulations 2001 reproductive effect has the same meaning as it has in Sched- ule 4 of the Hazardous Substances (Minimum Degrees of Haz- ard) Regulations 2001 sensitisation has the same meaning as it has in Schedule 4 of the Hazardous Substances (Minimum Degrees of Hazard) Regulations 2001 significant adverse biological effect has the same meaning as it has in Schedule 4 of the Hazardous Substances (Minimum Degrees of Hazard) Regulations 2001 sufficient evidence in animals, in relation to a substance, means data that indicate a causal relationship between expos- ure to the substance and— (a) an increased incidence of malignant tumours, or of a combination of benign and malignant tumours, in— (i) (ii) 2 or more species of animals; or 2 or more independent studies in 1 species carried out at different times, in different laboratories, or under different protocols; or (b) malignant tumours that occur to an unusual degree, hav- ing regard to incidence, site, type of tumour, or age at onset in a single study in 1 species sufficient evidence in humans, in relation to a substance, means a causal relationship has been established between ex- posure to the substance and the development of human cancer, from which chance, bias, and confounding can be ruled out with reasonable confidence 47 Schedule 4 Hazardous Substances (Classification) Regulations 2001 Reprinted as at 1 June 2001 target organ/systemic toxicity means toxicologically signifi- cant effect on the function or morphology of an organ or on the biochemistry or haematology of a human valid has the same meaning as it has in Schedule 4 of the Haz-
 ardous Substances (Minimum Degrees of Hazard) Regulations 2001.
2 Table of hazard classifications Toxic substances are classified according to the criteria set out in the table in this schedule.

The hazard classifications are set out in the first column and the criteria for each hazard classi- fication are set out in the second column.
Table of hazard classifications Hazard classification Criteria for each hazard classification 6.1A—Substances that are acutely toxic (a) (b) (c) (d) (e) a substance for which data indicate an oral LD50 less than or equal to 5 milligrams of the substance per kilogram of bodyweight as a result of acute exposure of animals to the substance by the oral route; or a substance for which data indicate a dermal LD50 less than or equal to 50 milligrams of the substance per kilogram of bodyweight as a result of acute exposure of animals to the substance by the dermal route; or a substance for which data indicate an in- halation LC50 less than or equal to 100 parts per million of the substance in air as a re- sult of acute exposure of animals to the sub- stance by the inhalation route, where the substance is a gas; or a substance for which data indicate an in- halation LC50 less than or equal to 0.5 mil- ligrams of the substance per litre of air as a result of acute exposure of animals to the substance by the inhalation route, where the substance is a vapour; or a substance for which data indicate an in- halation LC50 less than or equal to 0.05 mil- ligrams of the substance per litre of air as a result of acute exposure of animals to the substance by the inhalation route, where the substance is a dust or mist.
48 Reprinted as at 1 June 2001 Hazardous Substances (Classification) Regulations 2001 Schedule 4 Hazard classification Criteria for each hazard classification 6.1B—Substances that are acutely toxic (a) (b) (c) (d) (e) 6.1C—Substances that are acutely toxic (a) (b) (c) a substance for which data indicate an oral LD50 greater than 5 milligrams, but less than or equal to 50 milligrams, of the substance per kilogram of bodyweight as a result of acute exposure of animals to the substance by the oral route; or a substance for which data indicate a der- mal LD50 greater than 50 milligrams, but less than or equal to 200 milligrams, of the substance per kilogram of bodyweight as a result of acute exposure of animals to the substance by the dermal route; or a substance for which data indicate an in- halation LC50 greater than 100 parts per mil- lion, but less than or equal to 500 parts per million, of the substance in air as a result of acute exposure of animals to the substance by the inhalation route, where the substance is a gas; or a substance for which data indicate an in- halation LC50 greater than 0.5 milligrams, but less than or equal to 2.0 milligrams, of the substance per litre of air as a result of acute exposure of animals to the substance by the inhalation route, where the substance is a vapour; or a substance for which data indicate an in- halation LC50 greater than 0.05 milligrams, but less than or equal to 0.5 milligrams, of the substance per litre of air as a result of acute exposure of animals to the substance by the inhalation route, where the substance is a dust or mist.
a substance for which data indicate an oral LD50 greater than 50 milligrams, but less than or equal to 300 milligrams, of the sub- stance per kilogram of bodyweight as a re- sult of acute exposure of animals to the sub- stance by the oral route; or a substance for which data indicate a dermal LD50 greater than 200 milligrams, but less than or equal to 1 000 milligrams, of the substance per kilogram of bodyweight as a result of acute exposure of animals to the substance by the dermal route; or a substance for which data indicate an in- halation LC50 greater than 500 parts per mil- lion, but less than or equal to 2 500 parts per 49 Schedule 4 Hazardous Substances (Classification) Regulations 2001 Reprinted as at 1 June 2001 Hazard classification Criteria for each hazard classification million, of the substance in air as a result of acute exposure of animals to the substance by the inhalation route, where the substance is a gas; or a substance for which data indicate an in- halation LC50 greater than 2.0 milligrams, but less than or equal to 10 milligrams, of the substance per litre of air as a result of acute exposure of animals to the substance by the inhalation route, where the substance is a vapour; or a substance for which data indicate an in- halation LC50 greater than 0.5 milligrams, but less than or equal to 1.0 milligrams, of the substance per litre of air as a result of acute exposure of animals to the substance by the inhalation route, where the substance is a dust or mist.
a substance for which data indicate an oral LD50 greater than 300 milligrams, but less than or equal to 2 000 milligrams, of the substance per kilogram of bodyweight as a result of acute exposure of animals to the substance by the oral route; or a substance for which data indicate a dermal LD50 greater than 1 000 milligrams, but less than or equal to 2 000 milligrams, of the substance per kilogram of bodyweight as a result of acute exposure of animals to the substance by the dermal route; or a substance for which data indicate an in- halation LC50 greater than 2 500 parts per million, but less than or equal to 5 000 parts per million, of the substance in air as a re- sult of acute exposure of animals to the sub- stance by the inhalation route, where the substance is a gas; or a substance for which data indicate an in- halation LC50 greater than 10 milligrams, but less than or equal to 20 milligrams, of the substance per litre of air as a result of acute exposure of animals to the substance by the inhalation route, where the substance is a vapour; or a substance for which data indicate an in- halation LC50 greater than 1.0 milligrams, but less than or equal to 5 milligrams, of the substance per litre of air as a result of (d) (e) 6.1D—Substances that are acutely toxic (a) (b) (c) (d) (e) 50 Reprinted as at 1 June 2001 Hazardous Substances (Classification) Regulations 2001 Schedule 4 Hazard classification Criteria for each hazard classification acute exposure of animals to the substance by the inhalation route, where the substance is a dust or mist.
6.1E—Substances that are acutely toxic (a) (b) a substance for which data indicate an LD50 greater than 2 000 milligrams, but less than or equal to 5 000 milligrams, of the sub- stance per kilogram of bodyweight as a re- sult of acute exposure of animals to the sub- stance by oral or dermal routes; or a substance for which assignment to a more hazardous category is not warranted and if— (i) (ii) (iii) (iv) data for the substance indicate to an expert evidence in humans of sig- nificant acute toxic effects as a re- sult of acute exposure to the sub- stance; or data indicate any mortality, when tested up to category D values by the oral, dermal, or inhalation routes as a result of acute exposure to the substance; or clinical signs, other than diarrhoea, piloerection, or an ungroomed ap- pearance, indicate to an expert a significant adverse biological effect when tested up to category D values by the oral, dermal, or inhalation routes as a result of acute exposure to the substance; or reliable information, including reli- able information from animal stud- ies other than those from which LD50 data was obtained to classify the substance in hazard classifica- tion 6.1E, indicates to an expert the potential for significant acute toxic effects in humans as a result of acute exposure to the substance.
51 Schedule 4 Hazardous Substances (Classification) Regulations 2001 Reprinted as at 1 June 2001 Hazard classification Criteria for each hazard classification 6.3A—Substances that are irritating to the skin (a) (b) (c) a substance for which reversible adverse ef- fects on dermal tissue are evidenced by data indicating a mean Draize score greater than or equal to 2.3, but less than or equal to 4.0, for either erythema or eschar or oedema as a result of exposure to the substance; or a substance for which data indicate skin inflammation, including alopecia over a limited area, hyperkeratosis, hyperplasia, and scaling, that persists for 14 days fol- lowing exposure to the substance in at least 66% of exposures as a result of exposure to the substance; or a substance for which data indicate a pronounced variability of adverse effects between and within test exposures, even though the effects of exposure to the sub- stance do not meet the criteria in paragraph (a) or paragraph (b), or for hazard classifi- cation 6.3B.
6.3B—Substances that are mildly irritating to the skin A substance for which reversible adverse effects on dermal tissue are evidenced by data indicating a mean Draize score greater than or equal to 1.5, but less than 2.3, for either of the skin irritation effects known as erythema or oedema as a result of expos- ure to the substance.
6.4A—Substances that are irritating to the eye A substance for which adverse effects on ocular tis- sue as a result of exposure to the substance are evi- denced by data indicating— (a) a mean Draize score greater than or equal to 1, but less than 3, for corneal opacity, where the effects reverse within 21 days after exposure to the substance; or a mean Draize score greater than or equal to 1, but less than 1.5, for iritis, where the ef- fects reverse within 21 days after exposure to the substance; or a mean Draize score greater than or equal to 2 for conjunctival redness, where the effects reverse within 21 days after exposure to the substance; or a mean Draize score greater than or equal to 2 for conjunctival oedema (chemosis), where the effects reverse within 21 days after exposure to the substance.
(b) (c) (d) 52 Reprinted as at 1 June 2001 Hazardous Substances (Classification) Regulations 2001 Schedule 4 Hazard classification Criteria for each hazard classification 6.5A—Substances that are respiratory sensitisers (a) (b) 6.5B—Substances that are contact sensitisers (a) 6.6A—Substances that are known or presumed human mutagens (b) (a) (b) (c) a substance for which data indicate to an ex- pert positive respiratory sensitisation effects in a relevant animal test as a result of expos- ure to the substance; or a substance for which data indicate to an expert evidence in humans of specific respi- ratory hypersensitivity (including asthma, rhinitis, and alveolitis) with the clinical character of an allergic reaction as a result of exposure to the substance.
(ii) a substance for which data indicate to an expert positive contact sensitisation effects in a reliable animal test either— (i) equal to or greater than 30% sensiti- sation response in an adjuvant type test method as a result of exposure to the substance; or equal to or greater than 15% sensi- tisation response in a non-adjuvant type test method as a result of ex- posure to the substance; or a substance for which data indicate to an expert evidence in humans of sensitisation by skin contact as a result of exposure to the substance.
a substance for which data indicate a causal relationship between exposure of humans to the substance and the induction of heritable mutagenic effects in the germ cells of hu- mans; or a substance for which data indicate evi- dence of heritable mutagenic effects in the germ cells of mammals as a result of in vivo exposure to the substance; or a substance for which data indicate, as a re- sult of in vivo exposure to the substance,— evidence of mutagenic effects in the (i) somatic cells of mammals; and evidence that the substance has the potential to cause mutagenic effects in germ cells of mammals (includ- ing evidence of genotoxic effects in germ cells or evidence of the ability of the substance or its metabolites to interact with the genetic material of germ cells); or (ii) 53 Schedule 4 Hazardous Substances (Classification) Regulations 2001 Reprinted as at 1 June 2001 Hazard classification Criteria for each hazard classification (d) a substance for which data indicate evi- dence of mutagenic effects in the germ cells of humans as a result of exposure to the sub- stance without evidence of transmission to progeny (including an increase in the fre- quency of aneuploidy in sperm cells of ex- posed humans).
a substance for which data indicate evi- dence of mutagenic effects in the somatic cells of mammals as a result of in vivo ex- posure to the substance; or a substance for which data indicate evi- dence of genotoxic effects in the somatic cells of mammals as a result of in vivo ex- posure to the substance, and evidence of mutagenic effects as a result of in vitro ex- posure to the substance; or a substance for which data indicate evi- dence of mutagenic effects as a result of in vitro exposure of mammalian cells to the substance, where there is a structure activ- ity relationship to known germ cell muta- gens (which relationship is a significant cor- relative relationship between the chemical structure of the substance and the chemical structure of a known germ cell mutagen, where the relationship relates to that germ cell mutagen activity).
a substance for which data indicate suffi- cient evidence in humans of a causal rela- tionship between exposure to the substance and the development of cancer in humans; or a substance for which data indicate suffi- cient evidence in animals of a causal rela- tionship between exposure to the substance and an increased incidence of tumours; or a substance for which data indicate— (i) limited evidence in humans of a positive correlation between expos- ure to the substance and the devel- opment of human cancer; and limited evidence in animals that ex- posure to the substance may lead to an increased incidence of tumours.
6.6B—Substances that are suspected human mutagens (a) (b) (c) (a) (b) (c) 6.7A—Substances that are known or presumed human carcinogens (ii) 54 Reprinted as at 1 June 2001 Hazardous Substances (Classification) Regulations 2001 Schedule 4 Hazard classification Criteria for each hazard classification 6.7B—Substances that are suspected human carcino- gens A substance for which data indicate limited evi- dence in humans or limited evidence in animals that exposure to the substance may lead to the devel- opment of cancer or an increased incidence of tu- mours, where the strength and weight of the evi- dence indicate to an expert that the evidence is not sufficient to classify the substance in hazard classi- fication 6.7A.
6.8A—Substances that are known or presumed human reproductive or develop- mental toxicants (a) (b) a substance for which data indicate evi- dence of a causal relationship in humans between exposure to the substance and ad- verse effects on reproductive ability, repro- ductive capacity, or development; or a substance for which data indicate evi- dence of an adverse reproductive or adverse developmental effect in animals as a result of exposure to the substance, where that ad- verse effect occurs either— (i) in the absence of other adverse effects from exposure to the sub- stance; or in the presence of other adverse ef- fects that occur as a result of ex- posure to the substance, where the adverse reproductive or adverse de- velopmental effect is considered by an expert not to be a secondary non- specific consequence of those other adverse effects.
(ii) 6.8B—Substances that are suspected human reproduc- tive or developmental toxi- cants A substance for which data indicate evidence from human epidemiological or animal studies of an ad- verse reproductive or adverse developmental effect as a result of exposure to the substance, where— (a) that effect is considered by an expert not to be a secondary non-specific consequence of any other adverse effect; and the strength and weight of the evidence in- dicate to an expert that the evidence is not sufficient to classify the substance in hazard classification 6.8A.
(b) 55 Schedule 4 Hazardous Substances (Classification) Regulations 2001 Reprinted as at 1 June 2001 Hazard classification Criteria for each hazard classification 6.8C—Substances that pro- duce toxic human reproduc- tive or developmental effects on or via lactation 6.9A—Substances that are toxic to human target organs or systems (a) (b) (c) (d) (a) (b) a substance for which data from studies of absorption, metabolism, distribution, and excretion of the substance indicate evidence that the substance would be present in po- tentially toxic levels in human breast milk; or a substance for which data indicate evi- dence in humans of toxicity to babies during the lactation period as a result of exposure; or a substance for which data from 1 or 2 gen- eration studies indicate evidence of any ad- verse effect in the offspring of animals due to transfer of the substance in the milk as a result of exposure; or a substance for which data from 1 or 2 gen- eration studies indicate evidence of any ad- verse effect in the offspring of animals due to any adverse effect on the quality of milk as a result of exposure.
a substance for which data indicate to an expert evidence of a causal relationship be- tween exposure of humans to the substance and the development of target organ/sys- temic toxicity that would not result in the substance being classified in any of the sub- classes 6.1, 6.3, 6.4, 6.5, 6.6, 6.7, or 6.8; or a substance for which data indicate to an ex- pert evidence of a significant adverse bio- logical effect on the function or morphol- ogy of an organ or on the biochemistry or haematology of an organism as a result of exposure to the substance that would not re- sult in the substance being classified in any of subclasses 6.1, 6.3, 6.4, 6.5, 6.6, 6.7, or 6.8, and that are produced at low expos- ure concentrations and are of relevance to human health.
6.9B—Substances that are harmful to human target or- gans or systems A substance for which data indicate to an expert evidence of a significant adverse biological effect on the function or morphology of an organ or on the biochemistry or haematology of an organism as a result of exposure to the substance that would not result in the substance being classified in any of subclasses 6.1, 6.3, 6.4, 6.5, 6.6, 6.7 or 6.8, and that 56 Reprinted as at 1 June 2001 Hazardous Substances (Classification) Regulations 2001 Schedule 4 Hazard classification Criteria for each hazard classification are produced at moderate exposure concentrations and are of relevance to human health.
57 Schedule 5 Hazardous Substances (Classification) Regulations 2001 Reprinted as at 1 June 2001 1 2 Schedule 5 Classification criteria for corrosive substances r 10 Interpretation In this schedule, unless the context otherwise requires, mean Draize score has the same meaning as it has in Schedule 5 of the Hazardous Substances (Minimum Degrees of Hazard) Regulations 2001.

Table of hazard classifications Corrosive substances are classified according to the criteria set out in the table in this schedule.
The hazard classifications are set out in the first column and the criteria for each hazard classification are set out in the second column.
Table of hazard classifications Hazard classification Criteria for each hazard classification 8.1A—Substances that are corrosive to metals 8.2A—Substances that are corrosive to dermal tissue 8.2B—Substances that are corrosive to dermal tissue type P235 steel A substance that corrodes (ISO 9328 (II):1991), type SAE 1020, steel or non-clad aluminium types SAE 7075-T6 or AZ5GU-T6 at a rate exceeding 6.25 millimetres per year at a test temperature of 55 degrees Celsius.
A substance for which data indicate irreversible de- struction of dermal tissue, which destruction is vis- ible necrosis through the epidermis and into the der- mis, within 1 hour following exposure to the sub- stance for less than or equal to 3 minutes in greater than or equal to 33% of exposures as a result of ex- posure to the substance.
A substance for which data indicate irreversible de- struction of dermal tissue, which destruction is vis- ible necrosis through the epidermis and into the der- mis, within 14 days following exposure to the sub- stance for greater than 3 minutes, but not more than 1 hour, in greater than or equal to 33% of exposures as a result of exposure to the substance.
58 Reprinted as at 1 June 2001 Hazardous Substances (Classification) Regulations 2001 Schedule 5 Hazard classification Criteria for each hazard classification 8.2C—Substances that are corrosive to dermal tissue A substance for which data indicate irreversible de- struction of dermal tissue, which destruction is vis- ible necrosis through the epidermis and into the der- mis, within 14 days following exposure to the sub- stance for greater than 1 hour, but not more than 4 hours, in greater than or equal to 33% of exposures as a result of exposure to the substance.
8.3A—Substances that are corrosive to ocular tissue (a) (b) (c) a substance for which data indicate evi- dence in at least 33% of exposures of de- struction of ocular tissue, being adverse ef- fects on the cornea, iris, or conjunctiva as a result of exposure to the substance that are not expected to reverse or have not fully reversed within 21 days of exposure to the substance; or a substance for which data indicate a mean Draize score greater than or equal to 3 for corneal opacity as a result of exposure to the substance; or a substance for which data indicate a mean Draize score greater than 1.5 for iritis as a result of exposure to the substance.
59 Schedule 6 Hazardous Substances (Classification) Regulations 2001 Reprinted as at 1 June 2001 Schedule 6 Classification criteria for ecotoxic substances r 11 Interpretation In this schedule, unless the context otherwise requires,— acute aquatic ecotoxicity value means the lowest value ex- pressed in units of milligrams of a substance per litre of water from— (a) (b) (c) fish LC50 data after a 96-hour exposure period; or crustacean EC50 data after a 48-hour exposure period; or algal, or other aquatic plant, EC50 data after a 72-hour or 96-hour exposure period BCF has the same meaning as it has in Schedule 6 of the Haz- ardous Substances (Minimum Degrees of Hazard) Regulations 2001 bioaccumulative has the same meaning as it has in Schedule 6 of the Hazardous Substances (Minimum Degrees of Hazard) Regulations 2001 biocidal action has the same meaning as it has in Schedule 6 of the Hazardous Substances (Minimum Degrees of Hazard) Regulations 2001 BOD5 has the same meaning as it has in Schedule 6 of the Hazardous Substances (Minimum Degrees of Hazard) Regu- lations 2001 chronic aquatic ecotoxicity value means the lowest value ex- pressed in units of milligrams of a substance per litre of water from chronic fish, crustacean, algal, or other aquatic plant NOEC data COD has the same meaning as it has in Schedule 6 of the Haz- ardous Substances (Minimum Degrees of Hazard) Regulations 2001 EC50 has the same meaning as it has in Schedule 6 of the Haz- ardous Substances (Minimum Degrees of Hazard) Regulations 2001 Kow has the same meaning as it has in Schedule 6 of the Haz- ardous Substances (Minimum Degrees of Hazard) Regulations 2001 1 60 Reprinted as at 1 June 2001 Hazardous Substances (Classification) Regulations 2001 Schedule 6 LC50 has the same meaning as it has in Schedule 6 of the Haz- ardous Substances (Minimum Degrees of Hazard) Regulations 2001 LD50 has the same meaning as it has in Schedule 6 of the Haz- ardous Substances (Minimum Degrees of Hazard) Regulations 2001 LOEC has the same meaning as it has in
 Schedule 6 of the Hazardous Substances (Minimum Degrees of Hazard) Regu- lations 2001 MATC has the same meaning as it has in Schedule 6 of the Hazardous Substances (Minimum Degrees of Hazard) Regu- lations 2001 NOEC has the same meaning as it has in Schedule 6 of the Hazardous Substances (Minimum Degrees of Hazard) Regu- lations 2001 rapidly degradable has the same meaning as it has in Sched- ule 6 of the Hazardous Substances (Minimum Degrees of Haz- ard) Regulations 2001 soil DT50 means the half-life in soil, which is the time required to reduce the original concentration of the substance in the soil by 50% soil ecotoxicity value means the lower value expressed in units of milligrams of a substance per kilogram (dry weight) of soil from— (a) plant or soil invertebrate EC50 data after 14 days expos- ure to the substance; or data that demonstrate a 25% reduction in soil micro-or- ganism respiration or nitrification after 28 days expos- ure to the substance.
(b) 2 Table of hazard classifications Ecotoxic substances are classified according to the criteria set out in the table in this schedule.

The hazard classifications are set out in the first column and the criteria for each hazard classification are set out in the second column.
61 Schedule 6 Hazardous Substances (Classification) Regulations 2001 Reprinted as at 1 June 2001 Table of hazard classifications Hazard classification Criteria for each hazard classification 9.1A—Substances that are very ecotoxic in the aquatic environment A substance for which data indicate an acute aquatic ecotoxicity value less than or equal to 1 milligram of the substance per litre of water.
9.1B—Substances that are ecotoxic in the aquatic envir- onment 9.1C—Substances that are harmful in the aquatic envir- onment 9.1D—Substances that are slightly harmful to the aquatic environment or are otherwise designed for biocidal action 62 Unless the chronic aquatic ecotoxicity value is greater than 1 milligram of the substance per litre of water, a substance— (a) for which data indicate an acute aquatic ecotoxicity value greater than 1 milligram, but less than or equal to 10 milligrams, of the substance per litre of water; and that is not rapidly degradable or is bioac- cumulative, or is not rapidly degradable and is bioaccumulative.
(b) Unless the chronic aquatic ecotoxicity value is greater than 1 milligram of the substance per litre of water, a substance— (a) for which data indicate an acute aquatic ecotoxicity value greater than 10 mil- ligrams, but less than or equal to 100 mil- ligrams, of the substance per litre of water; and that is not rapidly degradable or is bioac- cumulative, or is not rapidly degradable and is bioaccumulative.
a substance for which data indicate that— the acute aquatic ecotoxicity value (i) is greater than 1 milligram per litre of water but less than or equal to 100 milligrams of the substance per litre of water, but does not meet the criteria for hazard clas- sification 9.1B or 9.1C; or the chronic aquatic ecotoxicity value is less than or equal to 1 mil- ligram of the substance per litre of water, but does not meet the criteria for hazard classification 9.1A, 9.1B, or 9.1C; or (ii) a substance that is designed for biocidal action, other than a substance that is de- signed for biocidal action against a virus, protozoan, bacterium, or an internal or- ganism in humans or in other vertebrates, but does not meet the criteria for any (b) (a) (b) Reprinted as at 1 June 2001 Hazardous Substances (Classification) Regulations 2001 Schedule 6 Hazard classification Criteria for each hazard classification (c) hazard classification in class 9 other than 9.1D; or a substance that is not rapidly degrad- able and that is bioaccumulative unless the chronic aquatic ecotoxicity value is greater than 1 milligram of the substance per litre of water, but does not meet the cri- teria for hazard classifications 9.1A, 9.1B, or 9.1C.
9.2A—Substances that are very ecotoxic in the soil en- vironment A substance for which data indicate a soil ecotox- icity value less than or equal to 1 milligram of the substance per kilogram dry weight of soil.
that are 9.2B—Substances ecotoxic in the soil environ- ment that are 9.2C—Substances harmful in the soil environ- ment 9.2D—Substances that are slightly harmful in the soil environment 9.3A—Substances that are very ecotoxic to terrestrial vertebrates 9.3B—Substances that are ecotoxic to terrestrial verte- brates A substance for which data indicate a soil ecotoxi- city value greater than 1 milligram, but less than or equal to 10 milligrams, of the substance per kilo- gram dry weight of soil.
A substance for which data indicate a soil ecotoxi- city value greater than 10 milligrams, but less than or equal to 100 milligrams, of the substance per kilogram dry weight of soil, where the soil DT50 is greater than 30 days.

A substance for which data indicate a soil ecotoxi- city value greater than 10 milligrams, but less than or equal to 100 milligrams, of the substance per kilogram dry weight of soil, where the soil DT50 is less than or equal to 30 days.
(a) (b) (a) (b) a substance for which data indicate an acute avian or mammalian oral or dermal LD50 less than or equal to 50 milligrams of the substance per kilogram of bodyweight; or a substance for which data indicate an acute avian or mammalian LC50 less than or equal to 500 parts per million of the sub- stance in the diet.
a substance for which data indicate an acute avian or mammalian oral or dermal LD50 greater than 50 milligrams, but less than or equal to 500 milligrams, of the substance per kilogram of bodyweight; or a substance for which data indicate an acute avian or mammalian LC50 greater than 500 parts per million, but less than or equal to 1 000 parts per million, of the substance in the diet.
63 Schedule 6 Hazardous Substances (Classification) Regulations 2001 Reprinted as at 1 June 2001 Hazard classification Criteria for each hazard classification 9.3C—Substances that are harmful to terrestrial verte- brates (a) (b) (c) a substance for which data indicate an acute avian or mammalian oral or dermal LD50 greater than 500 milligrams, but less than or equal to 2 000 milligrams, of the substance per kilogram of bodyweight; or a substance for which data indicate an acute avian or mammalian LC50 greater than 1 000 parts per million, but less than or equal to 5 000 parts per million, of the substance in the diet; or a substance for which data indicate a chronic avian or mammalian MATC of less than 100 parts per million of the sub- stance in the diet, but does not meet the criteria for hazard classification 9.3A or 9.3B.
9.4A—Substances that are very ecotoxic to terrestrial in- vertebrates A substance for which data indicate a contact or oral LD50 less than 2 micrograms of substance per terrestrial invertebrate.

9.4B—Substances that are ecotoxic to terrestrial inver- tebrates 9.4C—Substances that are harmful to terrestrial inverte- brates A substance for which data indicate a contact or oral LD50 greater than or equal to 2 micrograms, but less than 11 micrograms, of substance per ter- restrial invertebrate.
A substance for which data indicate a contact or oral LD50 greater than or equal to 11 micrograms, but less than or equal to 25 micrograms, of sub- stance per terrestrial invertebrate.
64 Schedule 7 Tables of hazard classifications Table 1—Hazard classifications for class 1, 2, 3, 4, and 5 substances r 4(8) Flammability Capacity to oxidise Class 2 Class 3 Class 4 Property Class Subclass Explosiveness Class 1 Class 5 5.1.2 Gases 5.2 Organic peroxide 1.1 Mass explosion 1.2 Projection 1.3 Fire and minor blast 1.4 No signi- ficant hazard 1.5 Very insensi- tive 1.6 Ex- tremely insensi- tive 2.1.1 Gases 2.1.2 Aerosols 3.1 Liquids 3.2 Liquid desen- sitised explosive 4.1.1 Readily combus- tible 4.1.2 Self reactive 4.1.3 Solid desen- sitised explosive 4.2 Spontane- ously combusti- ble 4.3 Danger- ous when wet 5.1.1 Liquids/ solids Hazard classification 1.1A 2.1.1A 2.1.2A 3.1A 3.2A 4.1.1A 4.1.2A 4.1.3A 4.2A 4.3A 5.1.1A 5.1.2A 5.2A 1.1B 1.2B 1.4B 2.1.1B 3.1B 3.2B 4.1.1B 4.1.2B 4.1.3B 4.2B 4.3B 5.1.1B 1.1C 1.2C 1.3C 1.4C 3.1C 3.2C 4.1.2C 4.1.3C 4.2C 4.3C 5.1.1C 1.1D 1.2D 1.4D 1.5D 3.1D 1.1E 1.2E 1.4E 1.1F 1.2F 1.3F 1.4F 1.1G 1.2G 1.3G 1.4G 1.2H 1.3H 1.1J 1.2J 1.3J 1.2K 1.3K 1.1L 1.2L 1.3L 4.1.2D 4.1.2E 4.1.2F 4.1.2G 5.2B 5.2C 5.2D 5.2E 5.2F 5.2G 6 5 1.6N 1.4S ( C l a s s i fi c a t i o n ) S c h e d u l e 7 6 6 Table 2—Hazard classifications for class 6, 8, and 9 substances Property Class Subclass Hazard classification Toxicity Class 6 Corrosiveness Class 8 Ecotoxicity Class 9 6.1 Acutely toxic 6.3 Skin irritant 6.4 Eye irritant 6.5 Sensitisa- tion 6.6 Mutagen 6.7 Carcino- gen 6.8 Repro- duc- tive/deve- lopmental 6.9 Target organ/ system 8.1 Metallic corrosive 8.2 Skin corrosive 8.3 Eye corrosive 9.1 Aquatic 9.2 Soil 9.3 Terrestrial vertebrate 9.4 Terrestrial inverte- brate 6.1A 6.3A 6.4A 6.5A 6.6A 6.7A 6.8A 6.9A 8.1A 8.2A 8.3A 9.1A 9.2A 9.3A 9.4A 6.1B 6.3B 6.5B 6.6B 6.7B 6.8B 6.9B 6.1C 6.1D 6.1E 6.8C 8.2B 8.2C 9.1B 9.2B 9.3B 9.4B 9.1C 9.2C 9.3C 9.4C 9.1D 9.2D Martin Bell, for Clerk of the Executive Council.
( C l a s s i fi c a t i o n ) R e p r i n t e d a s a t 1 J u n e 2 0 0 1 Reprinted as at 1 June 2001 Hazardous Substances (Classification) Regulations 2001 Explanatory note This note is not part of the regulations, but is intended to indicate their general effect.

These regulations, which come into force on 2 July 2001, prescribe classification criteria for each intrinsic hazardous substance property.
The criteria for the classification are set out in Schedules 1 to 6, and tables showing all the subclasses and categories are set out in Sched- ule 7.

Issued under the authority of the Acts and Regulations Publication Act 1989.

Date of notification in Gazette: 31 May 2001.


67 Notes Hazardous Substances (Classification) Regulations 2001 Reprinted as at 1 June 2001 Contents 1 2 3 4 General Status of reprints How reprints are prepared Changes made under section 17C of the Acts and Regulations Publication Act 1989 List of amendments incorporated in this reprint (most recent first) General This is a reprint of the Hazardous Substances (Classification) Regulations 2001.
The reprint incorporates all the amend- ments to the regulations as at 1 June 2001, as specified in the list of amendments at the end of these notes.

Relevant provisions of any amending enactments that have yet to come into force or that contain relevant transitional or savings provisions are also included, after the principal enact- ment, in chronological order.
Status of reprints Under section 16D of the Acts and Regulations Publication Act 1989, reprints are presumed to correctly state, as at the date of the reprint, the law enacted by the principal enactment and by the amendments to that enactment.

This presumption applies even though editorial changes authorised by section 17C of the Acts and Regulations Publication Act 1989 have been made in the reprint.
This presumption may be rebutted by producing the official volumes of statutes or statutory regulations in which the prin- cipal enactment and its amendments are contained.

How reprints are prepared A number of editorial conventions are followed in the prep- aration of reprints.

For example, the enacting words are not included in Acts, and provisions that are repealed or revoked are omitted.
For a detailed list of the editorial conventions, 5 Notes 1 2 3 68 Reprinted as at 1 June 2001 Hazardous Substances (Classification) Regulations 2001 Notes see http://www.pco.parliament.govt.nz/editorial-conventions/ or Part 8 of the Tables of New Zealand Acts and Ordinances and Statutory Regulations and Deemed Regulations in Force.
4 Changes made under section 17C of the Acts and Regulations Publication Act 1989 Section 17C of the Acts and Regulations Publication Act 1989 authorises the making of editorial changes in a reprint as set out in sections 17D and 17E of that Act so that, to the extent permitted, the format and style of the reprinted enactment is consistent with current legislative drafting practice.

Changes that would alter the effect of the legislation are not permitted.
A new format of legislation was introduced on 1 January 2000.

Changes to legislative drafting style have also been made since 1997, and are ongoing.

To the extent permitted by section 17C of the Acts and Regulations Publication Act 1989, all legisla- tion reprinted after 1 January 2000 is in the new format for legislation and reflects current drafting practice at the time of the reprint.
In outline, the editorial changes made in reprints under the au- thority of section 17C of the Acts and Regulations Publication Act 1989 are set out below, and they have been applied, where relevant, in the preparation of this reprint: • omission of unnecessary referential words (such as “of this section” and “of this Act”) typeface and type size (Times Roman, generally in 11.5 point) layout of provisions, including: • • indentation position of section headings (eg, the number and heading now appear above the section) format of definitions (eg, the defined term now appears in bold type, without quotation marks) format of dates (eg, a date formerly expressed as “the 1st day of January 1999” is now expressed as “1 January 1999”) position of the date of assent (it now appears on the front page of each Act) 69 • • • • • Notes Hazardous Substances (Classification) Regulations 2001 Reprinted as at 1 June 2001 • • • • • • punctuation (eg, colons are not used after definitions) Parts numbered with roman numerals are replaced with arabic numerals, and all cross-references are changed accordingly case and appearance of letters and words, including: • format of headings (eg, headings where each word formerly appeared with an initial cap- ital letter followed by small capital letters are amended so that the heading appears in bold, with only the first word (and any proper nouns) appearing with an initial capital letter) small capital letters in section and subsection ref- erences are now capital letters • schedules are renumbered (eg, Schedule 1 replaces First Schedule), and all cross-references are changed accord- ingly running heads (the information that appears at the top of each page) format of two-column schedules of consequential amendments, and schedules of repeals (eg, they are rearranged into alphabetical order, rather than chrono- logical).
List of amendments incorporated in this reprint (most recent first) Wellington, New Zealand: Published under the authority of the New Zealand Government—2009 5 12 70