NOM-002-SCT/2003

[**MEXICAN OFFICIAL JOURNAL** Wednesday, December 3, 2003]{.underline}

**[Mexican Official Standard NOM-002-SCT, List of hazardous substances
and materias more usually transported]{.underline}**

At the margin a seal with the National Crest, saying United Mexican
States.- Secretariat of Communications and Transport. National
Standardization Consultative Committees for Land, Air, Maritime and
Ports Transportation.

MEXICAN OFFICIAL STANDARD NOM-002-SCT/2003, LIST OF HAZARDOUS SUBSTANCES
AND MATERIALS MORE USUALLY TRANSPORTED.

AARON DYCHTER POLTOLAREK, Under Secretary of Transport and President of
the National Standardization Consultative Committees of Land transport
and Air Transport, jointly with CESAR PATRICIO REYES ROEL, Coordinator
General of Ports and Merchant Marine and President of the National
Standardization Consultative Committee of Maritime Transport and Ports,
with foundation on articles 36, parts I, IV, VI, IX, XII, XIV, XVI,
XVII, XVIII, XXV AND XXVII of the Organic Law of Federal Public
Administration; 4^th^ of the Federal Law of Administrative Procedures;
1^st^., 38 part II, 40 parts III, V, XIII, XVI and XVII; 41 and 43 of
the Federal Law on Metrology and Standardization; 5^th^, part VI of the
Law of Roads, Bridges and Federal Auto Transportation; 7^th^, part V, 39
and 63 of the Law of Navigation; 1^st^ and 6^th^, parts III and V of the
Law of Civil Aviation; 1^st^ and 17 of the Regulation for the Land
Transport of Hazardous Materials and Wastes; 6^th^ part XIII of the
Interior Regulation of the Secretariat of Communications and Transport
and other ordainments that may be applicable, and

**CONSIDERING**

That for the effects of safety and efficiency, it is necessary to
establish for all different means of transportation, a uniformity in the
Official Designation of the hazardous materials and substances, its
corresponding UN number, the class of risk and the type of packaging and
packages, as well as its special provisions.

That as a result of the commitments from the NAFTA between Mexico, the
United States and Canada, on Chapter IX "Measures Concerning
Standardization", article 905 "Use of International Standards", it is
established that each part will use as a base for their own measures, as
far as transport is concerned, the Recommendations of the United Nations
Organization, Model Regulation, for the Transport of Dangerous Goods.

That having complied with the procedure established in the Federal Law
on Metrology and Standardization and its Regulation, on February 7,
2003, it was published for general public comment the Project of the
Mexican Official Standard PROY-NOM-002-SCT/2002, List of hazardous
substances and materials more usually transported.

That with the prior authorization of the National Standardization
Consultative Committees of Land Transport, Air Transport and Maritime
Transport and Ports, it is now issued the Mexican Official Standard
NOM-002-SCT/2003, List of hazardous substances and materials more
usually transported.

Mexico, D.F. on the second day of the month of October of the year two
thousand and three.- The President of the National Standardization
Consultative Committees of Land Transport and Air Transport, **Aarón
Dychter Poltolarek.-** Signature.- The President of the National
Standardization Consultative Committee for Maritime Transport and Ports,
**César Patricio Reyes Roel.-** Signature.

**MEXICAN OFFICIAL STANDARD NOM-002-SCT/2003, LIST OF HAZARDOUS
SUBSTANCES AND MATERIALS MORE USUALLY TRANSPORTED**

**PREFACE**

In the elaboration of this Mexican Official Standard participated:

SECRETARIAT OF COMMUNICATIONS AND TRANSPORT

DIRECTORATE GENERAL OF FEDERAL AUTOTRANSPORTATION

DIRECTORATE GENERAL OF TARIFFS, RAILROAD AND MULTIMODAL TRANSPORTATION

DIRECTORATE GENERAL OF MERCHANT MARINE

DIRECTORATE GENERAL OF CIVIL AERONAUTICS

2\.

DIRECTORATE GENERAL OF LEGAL AND JURIDICAL MATTERS

MEXICAN INSTITUTE OF TRANSPORTATION

SECRETARIAT OF THE INTERIOR

DIRECTORATE GENERAL OF CIVIL PROTECTION

NATIONAL CENTER OF DISASTER PREVENTION

SECRETARIAT OF THE ENVIRONMENT AND NATURAL RESOURCES

NATIONAL ECOLOGY INSTITUTE

DIRECTORATE GENERAL OF INTEGRAL DILIGENCE OF RISKY MATERIALS AND
ACTIVITIES

SECRETARIAT OF NATIONAL DEFENSE

DIRECTORATE GENERAL OF THE FEDERAL REGISTRY OF FIREARMS AND EXPLOSIVES
CONTROL

DIRECTORATE GENERAL OF MILITARY INDUSTRY

SECRETARIAT OF ENERGY

NATIONAL COMMISSION OF NUCLEAR SAFETY AND SAFEGUARDS

DIRECTORATE GENERAL OF LP GAS

SECRETARIAT OF LABOR AND SOCIAL PREVISION

DIRECTORATE GENERAL OF SAFETY AND HEALTH AT WORK

GOVERNMENT OF THE FEDERAL DISTRICT

DIRECTORATE GENERAL OF CIVIL PROTECTION

PETROLEOS MEXICANOS

NATIONAL CHAMBER OF TRANSFORMATIVE INDUSTRY

NATIONAL CHAMBER OF CARGO AUTO TRANSPORT

NATIONAL ASSOCIATION OF THE CHEMICAL INDUSTRY

MEXICAN ASSOCIATION OF NON DESTRUCTIVE TEST COMPANIES

MEXICAN ASSOCIATION OF PAINTS AND DIES MANUFACTURERS

NATIONAL ASSOCIATION OF AROMATIC PRODUCTS MANUFACTURERS

ASSOCIATION OF CARGO CARRIERS OF THE CENTRAL ZONE OF THE STATE OF
VERACRUZ

NACIONAL DE CARROCERIAS, S.A. DE C.V.

GRUPO INTERMEX

DUPONT DE MEXICO, S.A. DE C.V.

GRUPO INDUSTRIAL RESISTOL

DESC CORPORATIVO, S.A. DE C.V.

GRUPO TMM, S.A.

**INDEX**

1.  Objective

2.  Field of application

3.  References

> 3\.

4.  Definitions

5.  Classification and designation of the hazardous substances and
    materials

6.  Tables Annexes to the Standard

7.  Bibliography

8.  Harmonization with international standards and lineaments

9.  Enforcement

10. Compliance

11. Sanctions

12. Validity

13. Transitory

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1.  **Objective**

> This Mexican Official Standard has as an objective to identify and
> classify the hazardous substances and materials more usually
> transported, according to its class, risk division, subsidiary risk,
> number assigned by the Organization of the United Nations, as well as
> the special provisions to which its transportation must be subject to
> as well as the method of package and packaging.

2.  **Field of Application**

> This Mexican Official Standard is obligatory, within the sphere of
> their responsibilities for shippers, carriers and receivers of the
> hazardous substances and materials, transported through the general
> means of communication by land, maritime and air.

3.  **References**

> For the correct application of this Standard, it is necessary to
> consult the following Mexican Official Standards, or those superseding
> them:
>
> NOM-052-ECOL/93 ESTABLISHING THE CHARACTERISTICS OF HAZARDOUS WASTE, A
> LIST OF THEM AND THE LIMITS THAT MAKES A HAZARDOUS WASTE DANGEROUS,
> DUE TO ITS TOXICITY TO THE ENVIRONMENT.
>
> NOM-053-ECOL/93 ESTABLISHING THE TEST PROCEDURES TO PERFORM THE
> EXTRACTION TEST FOR THE ELEMENTS THJAT MAKES A WASTE OR RESIDUE
> DANGEROUS FOR ITS TOXICITY TO THE ENVIRONMENT.
>
> NOM-054-ECOL/93 ESTABLISHING THE PROCEDURE TO DETERMINE THE
> INCOMPATIBILITY BETWEEN TWO OR MORE RESIDUES, CONSIDERED AS DANGEROUS
> BY NOM-CRP-001-ECOL.

4.  **Definitions**

> **Hazardous Substance.-** Every element, combination, material, or
> mixture of them, that independently of its physical state, represents
> a potential risk for health, environment, safety of the users and
> property of third party ones; also, under this definition are
> considered the biological agents which are cause of diseases.
>
> **Hazardous material.-** Those dangerous substances, their residues,
> their packaging, packages, and all other component that constitute the
> cargo that will be transported by the units.
>
> **GE (PG).-** Packaging Group.
>
> **Shipper.-** A person or company that in its own name or of a third
> party one, hires the services of transportation of hazardous
> materials.
>
> **Carrier.-** Auto transporter, railroad, maritime or aerial company.
>
> **Consignee.-** The person or company receiving hazardous materials.
>
> The terms and definitions not contained in this point and that the
> Secretariat of the Environment and Natural Resources, this Secretariat
> of communications and transport or the corresponding agencies to which
> this apply, will be understood as defined in the terms provided by the
> laws, regulations, in its case, the definitions originated in
> international instruments, ratified by the Mexican Government.
>
> 4\.
>
> **5.- Official transportation designation and classification of the
> hazardous substances and materials.**
>
> For the identification of the hazardous substances and materials by
> its class of risk or division, UN number assigned by the United
> Nations Organization, inherent subsidiary risks, as well as special
> provisions to which its transportation must be subject to, the group
> and method of packaging and packages that must be utilized, will be
> performed according to what is established on Tables 1 and 2 of this
> Mexican Official Standard.
>
> In the case that the official designation for the transport of a
> hazardous substance or material is not expressly considered on Tables
> 1 and 2 of this Standard, the shipper will establish the
> classification, by taking the generic designations listed on Table 4
> of this Standard, considering for such action the predominant
> dangerous characteristics of the substance or material in the case,
> for which and if so considered convenient, can be remitted to the
> MSDS, or through an approved and accredited testing laboratory.

1.  General provisions

    1.  Tables 1 and 2 of this Mexican Official Standard, are not
        exhaustive, they include only the most usually transported
        hazardous substances and materials. The tables will continue to
        be completed with the end of integrate as far as possible, all
        the hazardous substances and materials that due to its
        commercial importance, are transported more frequently. This
        will be achieved through a modification to the Standard,
        published on the **Federation Official Journal** and according
        to the modifications and actualizations of the latest edition of
        the Model Regulation of the United Nations, Recommendations on
        the Transport of Dangerous Goods.

> **5.1.2**The substance or material shown expressly by its name on the
> Lists of Hazardous Substances and Materials, will be transported
> according to the provisions established for that substance or
> material. To do the transportation of hazardous substances or
> materials that are not expressly mentioned in the Lists of Hazardous
> Substances and Materials, it must be used a "generic" term that
> contains the "not otherwise specified" (N.O.S.). The subject substance
> or material, can only be transported when their intrinsic dangerous
> physical-chemical properties have been determined, after which, it
> will be classified according to the definitions and criteria that
> describes it more adequately. The Shipper himself will proceed to
> classify his hazardous substances and materials, or else, through the
> results of tests performed and guaranteed by an accredited laboratory,
> that will attest that such substances or materials do not satisfy the
> parameters to be considered as such. Once the class to which the
> substance or material belongs to, compliance of all the requisites for
> the shipping and transporting which are established on the proper
> regulation must be complied with.

3.  Substances or materials that are presumed to have explosive
    characteristics, must be considered primordially to include them
    under class 1. Some collective epigraphs may be of the generic type
    or " Not Otherwise Specified"**,** as far as its safety is always
    guaranteed both excluding the transport of normal conditions to the
    substances or materials extremely dangerous, as well as having in
    consideration all the subsidiary risks that may be present on some
    substance or material.

4.  The lists of hazardous substances and materials, do not include
    substances and materials for which transportation is forbidden or
    controlled, in certain means of transportation, partly because it
    would be impossible to have an exhaustive list of them. However, the
    fact that a substance or material is not precisely noted on the
    Lists of Hazardous Materials which include the substances and
    materials more usually transported, should not be considered that
    its transportation can be done without restrictions, since the
    instability inherent to certain substances and materials may
    represent certain risks like explosion, polymerization with strong
    heat emission or release of toxic gases, which in their majority may
    be avoided through the utilization of proper packages and packaging
    or else, through procedures of dilution, stabilization, addition of
    some inhibitor, refrigeration or any other special caution
    provisions. In these cases the procedure has to be in accordance
    with point 5.1.2 of this Standard.

5.  When caution measures are prescribed on the List of Hazardous
    Substances and Materials for a determined substance or material (for
    example, that they are "stabilized" or "contain a determined
    percentage (%) of water or phlegmatizer"), that substance or
    material can not be normally transported, if such measures have not
    been taken, unless the material appears indicated in another section
    (for instance, on class 1), without any indication relative to
    caution measures or with the indication of different measures.

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1.  Official transport designation

    1.  The official transport designation is the part of the
        denomination that better describes the hazardous substances and
        materials and that appears in upper case letters on the List of
        Hazardous Substances and Materials, in some cases with digits,
        Greek letters or the prefixes "sec", "terc", m, n, o, p, that
        are an integral part of the designation. Some times between
        brackets another official transport designation is prescribed
        after the principal designation, for example: ETHANOL (ETHYLIC
        ALCOHOL).

    2.  The parts of a denomination appearing in lower case letters, are
        not considered elements of the official designation of
        transport, excepting in the case of indications as "sec-",
        "terc-", "m-", "n-", "o-" and "p-".

    3.  If there are conjunctions like "and" or "or" in lower case
        letters or if in some elements of the nameare separated by
        comas, it is not necessary to indicate that name wholly in the
        shipping document or in the markings of the packages and
        packaging. This is the case, particularly, when a combination of
        several different denominations that is shown with a single UN
        number.

> 5\.
>
> **5.2.4** The following examples show how the Official designation for
> transport must be chosen in such cases:

a)  UN 1057 LIGHTERS or LIGHTER REFILLS- It will be considered as
    Official designation for transport, the most appropriated of the two
    following designations:

> LIGHTERS
>
> LIGHTER REFILLS

b)  UN 3207 ORGANOMETALLIC COMPOUND or COMPOUND SOLUTION or COMPOUND
    DISPERSION, WATER REACTIVE, FLAMMABLE, N.O.S. As an official
    designation for transport, the best of the following combinations
    can be utilized:

ORGANOMETALLIC COMPOUND, WATER RECTING, FLAMMABLE, N.O.S.

ORGANOMETALLIC SOLUTION, WATER REACTING, FLAMMABLE, N.O.S.

ORGANOMETALLIC DISPERSION, WATER REACTING, FLAMMABLE, N.O.S.

> As a complement for each one of the generic denominations (N.O.S.), to
> the official designation for transport will be added the technical
> name of the material, the generic denominations with respect of which
> is considered necessary to add that data, have assigned on column 6 of
> table 2 of this Standard, Special Provision 274, except that a
> national law or international agreement prohibits to divulge it.
>
> **5.2.5** When an official designation for transport is assigned to a
> hazardous substance or material as a "N.O.S." generic denomination, to
> which have also been assigned Special Provision 274, it must be added
> (immediately after the "N.O.S." generic denomination) in brackets the
> technical name or approved chemical name or another name that is of
> common use in manuals, periodic publications and scientific or
> technical texts. Commercial brands or names should not be utilized for
> this end. In the case of pesticides, only the common name approved by
> the International Standards Organization (ISO) should be utilized, or
> other names included in the Recommended Classification of Pesticides
> by Hazard and Guidelines to Classification**)** of the World Health
> Organization (WHO) or in the Exclusive Pesticide Catalog of the
> Intersecretariat Commission for the Control and Use of Pesticides,
> Fertilizers and Toxic Substances (CICOPLAFEST), or else the name or
> names of the active ingredients of the substances.

Adequate expressions can also be used, such as: "contains", or
"containing" or other names such as "mixture","solution", etc., as well
as the percentage of the technical component, for example: UN 1993
FLAMMABLE LIQUID N.O.S. (CONTAINS XYLENE AND BENZENE), 3, PG II.

6.  When a mixture of hazardous materials is described with one of the
    "generic denominations" or "N.O.S.", to

which have been also assigned Special Provision 274, on column 6 of
table 2 of the Lists of Hazardous Substances and Materials, it will be
indicated in brackets the two predominant risk components of the
mixture. This is not applicable if any of the components of predominant
risk is a controlled substance according to the national laws or an
international agreement that prohibits its divulging it. If a mixture of
hazardous materials has a compound that carries a label of subsidiary
risk, this compound must be shown as one of the two technical names
appearing in brackets.

> The following examples show how to choose the official designation for
> transport, along with the technical name, in the case of materials
> carrying the "N.O.S." indication.
>
> UN 2003 METAL ALKYLS, N.O.S. (trimethylgalium)
>
> UN 2902 PESTICIDE, LIQUID, TOXIC, N.O.S. (drazoxolon).

7.  The official designation for transport may be used in singular or
    plural, according to the case. However, if portions of it contain
    terms that delimitate its sense, the order of these in the documents
    or the markings of the packages is facultative, for example: "
    PHENYLMERCURIC, COMPOUND", can also be shown as " COMPOUND,
    PHENYLMERCURIC".

8.  For materials of class 1 commercial or military names containing the
    official designation for transport can be used, complemented with a
    descriptive text.

9.  Unless it already appears on the Lists of Hazardous Substances and
    Materials in upper case letters with its appropriate name and due to
    the various physical states of its diverse isomers, that may be a
    liquid or a solid (for example: DINITROTOLUENES, LIQUID;
    DINITROTOLUENES, SOLID), to the official designation of transport
    will be added, the qualifications "LIQUID" or "SOLID" according to
    the case, or "MOLTEN", when a substance that is solid is presented
    for its transportation in a molten state (for example: ALKYLPHENOLS,
    SOLID, N.O.S., MOLTEN)

Save for the substances of spontaneous reaction and organic peroxides
and unless the name is already shown in upper case letters on column 2
of the lists of hazardous materials, the word "STABILIZED" will be
added, as part of the official designation of transport of a substance
that without stabilization, it would not be feasible to be transported
since it may react in a dangerous manner under normal transportation
conditions. Example: " ORGANIC TOXIC LIQUID, N.O.S., STABILIZED".

6\.

2.  Mixtures and solutions containing a hazardous substance

    1.  Every mixture or solution that contains a hazardous substance
        expressly mentioned on the Lists of Hazardous Substances and
        Materials and one or several substances that are not included on
        the Lists, must be treated according to the requirements
        established for the hazardous substances, indicating what
        package or packaging is appropriate to the physical state of the
        mixture or solution, unless:

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a.  The mixture or solution is expressly listed in this Standard;

b.  On the specific section designated on this Standard that indicates
    explicitly that the denomination refers only to the substance or
    material in its pure state;

c.  The class of risk, the physical state or the packing group of the
    solution or the mixture are different to those of the hazardous
    substance or material;

d.  There is a significant change on the measures to be adopted on
    emergency situations.

    1.  For the solutions and mixtures that are classified according to
        the provisions relative to the hazardous substance, on the
        official designation of transport will be added, according to
        the case, the word "SOLUTION" or the word "MIXTURE", for
        example: "ACETONE IN SOLUTION". Also the concentration of the
        solution or mixture must be indicated, for example: "ACETONE,
        SOLUTION AT 75%".

    2.  Mixtures or solutions containing one or more substances
        expressly mentioned on the Lists of Hazardous Substances and
        Materials or classified under a N.O.S. entry and one or various
        substances not subject to the Regulations for the transport of
        hazardous substances and materials, will be exempt of the
        application of this last one if the risk characteristics of the
        mixture or solution are such that does not satisfy criteria of
        any class or division (including criteria of human experience).

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3.  Preponderance of the risk characteristics

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a)  Table 5 must be utilized as a guide to determine the class in which
    a substance or material should be included, a mixture or solution
    that presents more than one risk, when these do not appear on the
    list of hazardous substances and materials of table 2.

b)  For substances and materials that have multiple risks and that are
    not listed specifically by its official designation for the
    transport on table 2, the most rigorous group of packaging indicated
    for the respective risk of the substances and materials, will have
    priority over the other packaging groups.

c)  The priority of the risk characteristics of the following materials
    or substances that have not been taken in consideration within table
    5 of risk preponderance, since its primary characteristics will
    always have priority.

-   Substances and objects of Class 1

-   Gases of Class 2

-   Spontaneous reaction and similar substances and desensitized
    explosives of Division 4.1

-   Pyrophoric Substances of Division 4.2

-   Substances of Division 5.2

-   Substances of Division 6.1 toxicity by inhalation with a packing
    group I, [\*]{.underline}

-   Substances of Division 6.2

-   Materials of Class 7

-   Excepting the substances or mixtures that comply with the criteria
    of Class 8, having a toxicity by inhalation or powder or vapors
    (CL50 "lethal concentration 50"), in the rank of packing group I,
    but for toxicity through oral ingestion or skin contact, only on the
    packing group III rank or less, which should be assigned to Class 8.

    1.  In all shipping documents, must be always indicated, the most
        specific applicable denomination to the hazardous substance or
        material.

7\.

**6. Tables annexed to the Standard**

Table 1: List of Hazardous Substances and Materials more Usually
Transported, by alphabetical order.

Table 2: List of Hazardous Substances and Materials more Usually
Transported, by numerical order.

Table 3: Special Provisions Relative to Determined Substances and
Materials.

Table 4: List of Official Generic Denomination for Transportation or
corresponding to Substances and Materials Not Otherwise Specified.

Table 5: Order of Preponderance of the Risk Characteristics ( Risk Class
and Packing Group)

Table 6: List of Substances of Spontaneous Reaction.

1.  General Indications for Consultation of table 1

List of Hazardous Substances and Materials more Usually Transported, by
alphabetical order, and is interpreted as follows:

**a)** This table is not a general index of provisions, it is a list in
alphabetical order of the substances and materials that are listed in
numerical order on table 2 and designed with a format of three columns
that indicate the following:

**First Column,** shows the name of the substance or material

**Second Column,** shows the risk class and division to which the
substance or material belongs to.

**Third Column,** shows the assigned number by the United Nations
Organization, for the substance or material.

> **b)** To establish the alphabetical order, although being part of the
> official designation of transport, it was not taken in consideration
> the following elements: numbers; names of the Greek letters,
> abbreviations "sec" and "terc" and the letters "N" (nitrogen); "n"
> (normal), "o" (ortho), "m" (meta \[goal\]), "p" (para \[for\]) and
> N.E.P. (N.O.S.).

c)  The name of a substance or material in upper case letters
    constitutes an official designation of transport.

d)  The name of a substance or material in upper case letters followed
    by the expression "see or look for" constitutes an optional official
    designation for transport or else, it is part of an official
    designation of transport.

e)  A denomination in lower case letters followed by the expression "see
    or look for", is not an official designation of transport, but a
    synonym.

f)  In a denomination containing a part expressed in upper case letters
    and another in lower case letters, it will be understood that the
    latter is not a part of the official designation of transport.

g)  The official designation of the substance or material may be used in
    singular or plural, as it may be more appropriate for the purposes
    of the shipping documents and the marking of the package and
    packaging.

    1.  General Consultation Indications for Table 2

Table 2 List of Hazardous Substances and Materials more Usually
Transported, by numerical order, is divided in 11 columns which indicate
the following:

\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

**Column 1:** "UN N°": contains the serial number assigned to the
substance or materials in the United Nations system.

**\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_**

**Column 2:** "Name and Description": official designation of transport
is indicated, in upper case letters, sometimes followed by a descriptive
text shown in lower case lettering. Official designation of transport
may be given in plural when there are isomers of the same
classification. Hydrates of organic substances may be included,
according to the case, under the official designation for transport of
the anhydrous substance.

**\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_**

**Column 3:** "Class or Division": points out the class or division and
in the case of class 1, the compatibility group assigned to the material
or substance according to the classification system described in section
5.

**\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_**

**Column 4:** "Subsidiary Risk" this column contains the number of class
or division of the important subsidiary risks that have been determined,
applying the classification system described in section 5.

**\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_**

**8.**

**\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_**

**Column 5:** "UN packing/packaging group": Points out the number of the
group of packing and packaging of the United Nations (I, II or III)
assigned to the material or substance. If more than one group is
indicated for the product in question, the group of package or packaging
of the substance or preparation to be transported, will be determined
according to its properties, applying the classification criteria
established on section 5.

**\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_**

**Column 6: "**Special Provisions: In it, there is a number that takes
you to the special provisions of table 3, applicable to the material or
substance. Special Dispositions are applied to every authorized packing
group for a determined substance or material, except that the text
indicates clearly another thing.

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**Column 7:** "Limited Quantities": in this column it is shown the
maximum quantity by package and interior packing authorized for the
transport of the substance or material in question, according to the
provisions of the Mexican Official Standard NOM-011-SCT 2, that relates
to limited quantities. The word "None" in this column , means that it is
not permitted to transport the substance or materials under the Standard
of limited quantities.

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**Column 8:** "Instructions for packing/packaging" This column contains
alphanumerical codes that takes to the corresponding special provisions
of packing and packaging of the corresponding Standard. In the special
instructions of packing and packaging, the special provisions for
packing and packaging are indicated, including the intermediate bulk
containers (IBC's) as well as the large packages and packaging that may
be utilized for the transport of hazardous substances and materials.

A code that includes the letter "P" makes reference to the instructions
of packages and packaging applicable to packages and packaging described
in the proper Standard for organic peroxides.

A code including the letters "IBC" makes reference to the instructions
of package and packaging of applicable to the usage of IBC's.

A code that includes the letters "LP" makes reference to the
instructions of packaging for the usage of large packages and packaging.

When no specific code is signaled, it will be considered that the
substance or material is not authorized for the type of package and
packaging that may be used in the frame of the instructions for packages
and packaging carrying that code.

If in the column appears the letters N/R, it means that it is not
necessary to pack or use packages for the substance or material in
question.

\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

**Column 9:** "Special Provisions for Packages and Packaging": this
column contains alphanumerical keys that takes you to the corresponding
special provisions of packages and packaging of the appropriate
Standard. In the special instructions of package and packaging are
indicated the special provisions of package and packaging (including the
IBC's and large volume packages).

A special provision for package and packaging that includes the letters
"PP", indicates that there is a special provision applicable to the use
of the instructions for package and packaging that carries the code E in
the corresponding Standard.

A special provision including the letter "B", refers to a special
provision for package and packaging applicable to the use of the
instructions for package and packaging that carry the code IBC within
the corresponding Standard

A special provision including the letter "L", makes reference to the
special provisions of package and packaging that carry the code "LP" in
the corresponding Standard.

\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

**Column 10:** " Instructions for portable tanks": this column shows a
number preceded of the letter "C" that takes to the corresponding
instruction of the appropriate Standard, that prescribes the type or
types of tanks demanded for the transport of the substance or materials
in portable tanks.

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**Column 11:** "Special provisions for portable tanks": In this column a
number preceded by the letters "CP" is indicated, that takes to the
special provisions that are applied to the transport of the substance or
material in portable tanks

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**9.**

1.  Abbreviations and symbols

On the Hazardous Materials list the following abbreviations or symbols
are utilized with the meanings indicated below:

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**Abbreviation Column Meaning**

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N.O.S. 2 Not Otherwise Specified.

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† 2 Item in which it is possible to consult a more detailed explanation
for

its application.

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2.  General Consultation Indications of table 3

Special Provisions Relative to Hazardous Substances and Materials

a)  Special provisions relative to determined substances or materials,
    are indicated on table 3. These provisions are identified by Arabic
    digits and are not necessarily found in numerical order.

    1.  General Consultation Indications of table 4

List of Official Designations for Transport, Generic or Corresponding to
Groups of Substances and Materials not Specified in Other Place.

a)  Substances and materials not appearing with their proper name in the
    provisions of table 2, must be classified according to what is
    indicated on part 5 of this Standard, determining as the official
    designation for transport, that, among those named on that listing,
    suits best the identification of the substance or material to deal
    with, thus, the names on Table 2 that describe the substance or
    material, must be used as the shipping name of the hazardous
    substance or material in question.

b)  The list, besides the main generic items given on Table 2, considers
    all the corresponding denominations to groups of substances "not
    otherwise specified".

    1.  In this list, the generic names or N.O.S. are grouped according
        to its risk class or division. The names have been placed into
        three groups as follows:

-   Specific denominations, covering a group of substances or materials
    of determined chemical or technical characteristics.

-   Denominations for pesticides of Class 3 and Division 6.1, and

-   General denominations, corresponding to groups of substances or
    materials that have one or more dangerous properties in general.

    1.  General Consultation Indications of table 5

> Table 5, Order of Preponderance of the Risk Characteristics, must be
> utilized to determine the class in which a substance or material
> should be included, a mixture or solution that presents more than one
> risk, when such substance or material, mix or solution presenting more
> than one risk, when such substance or material, mix or solution is not
> classified on tables 1 and 2 of this Standard.

2.  General Consultation Indications for table 6

> In this table, the classification by reference has been determined for
> those substances that are technically pure, save for the cases in
> which a concentration less than 100% is indicated, or when the
> concentration is different, the substances can then be classified in a
> different manner.

7.  **Bibliography**

    a.  Federal Law on Metrology and Standardization and its Regulation

    b.  Recommendations on the Transport of Dangerous Goods, Model
        Regulation, issued by the United Nations Organization, Twelfth
        Revised Edition, New York and Geneva, 2001.

    c.  International Maritime Code for Dangerous Goods (IMDG9;
        Amendment 29-96

    d.  Annex 18 to the Chicago Agreement on International Civil
        Aviation DOC 9284-AN/905 of the Technical Instructions for the
        Safe Transport of Dangerous Goods by Air ICAOI (1997-1998)

8.  **Harmonization with international standards and regulations**

This Official Mexican Standard is equivalent to:

a.  Recommendations on the Transport of Dangerous Goods, Model
    Regulation, issued by the United Nations Organization, Twelfth
    Revised Edition, New York and Geneva, 2001.

b.  International Maritime Code for Dangerous Goods (IMDG) Amendment
    29-96

c.  Annex 18 to the Chicago Agreement on International Civil Aviation
    DOC. 9284-AN/905 of the Technical Instructions for the Safe
    Transport of Dangerous Goods by Air ICAO (1997-1998)

10\.

9.  **Supervision**

The Secretariat of Communications and Transport, through the
Directorates Generals with authority, is the competent Authority to
watch the compliance of this Official Mexican Standard.

10. **Compliance**

This Standard is obligatory in the General Means of Communication for
the Transport of Hazardous Substances and Materials, with foundation in
the Civil Aviation Law and its Regulation; Law of Navigation and its
Regulation; Law of Ports and its Regulation; Regulation for the
Transport of Hazardous Materials and Wastes and any other international
documents signed by our country for the land, air and sea
transportation.

**11. Sanctions**

Non compliance of what is established in this Mexican Official Standard
will be sanctioned by this Secretariat, according to what is established
in the Law of Civil Aviation and its Regulation; Law of Navigation and
its Regulation; Law of Ports and its Regulation; Regulation for the
Transport of Hazardous Materials and Wastes and all other legal
ordainments that may result applicable, without prejudice of those
imposed by other agencies of the Federal Executive branch of the
Government while exercising their attributions or of the resulting civil
or criminal responsibility.

**12. Validity**

This Mexican Official Standard will enter in vigor 60 days after its
publication in the **Federation Official Journal.**

**13. Transitory**

**FIRST.** This Mexican Official Standard, substitutes
NOM-002-SCT2/1994, List of Hazardous substances and materials more
usually transported, published in the **Federation Official Journal**
dated October 30, 1995.

**SECOND.** Columns from 8 to 11 of table 2 of this Standard are
illustrative, as far as they are published and actualized the
appropriate Mexican Official Standards. They may also be valid for the
international trade.