Source: https://www.govregs.com/regulations/expand/title49_chapterI_part173_subpartD_section173.115
Timestamp: 2019-04-26 00:54:44+00:00

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49 CFR 173.115 - Class 2, Divisions 2.1, 2.2, and 2.3 - Definitions. § 173.115 - Class 2, Divisions 2.1, 2.2, and 2.3 - Definitions.
Collapse to view only § 173.115 - Class 2, Divisions 2.1, 2.2, and 2.3 - Definitions.
§ 173.115 - Class 2, Divisions 2.1, 2.2, and 2.3 - Definitions.
§ 173.121 - Class 3 - Assignment of packing group.
§ 173.125 - Class 4 - Assignment of packing group.
§ 173.127 - Class 5, Division 5.1 - Definition and assignment of packing groups.
§ 173.137 - Class 8 - Assignment of packing group.
§ 173.141 - Class 9 - Assignment of packing group.
§ 173.144 - Other Regulated Material (ORM) - Definitions.
§ 173.145 - Other Regulated Materials - Assignment of packing group.
§ 173.150 - Exceptions for Class 3 (flammable and combustible liquids).
§ 173.151 - Exceptions for Class 4.
§ 173.152 - Exceptions for Division 5.1 (oxidizers) and Division 5.2 (organic peroxides).
§ 173.153 - Exceptions for Division 6.1 (poisonous materials).
§ 173.154 - Exceptions for Class 8 (corrosive materials).
§ 173.155 - Exceptions for Class 9 (miscellaneous hazardous materials).
§ 173.156 - Exceptions for limited quantity and ORM.
§ 173.157 - Reverse logistics - General requirements and exceptions for reverse logistics.
(2) Has a flammable range at 101.3 kPa (14.7 psia) with air of at least 12 percent regardless of the lower limit. Except for aerosols, the limits specified in paragraphs (a)(1) and (a)(2) of this section shall be determined at 101.3 kPa (14.7 psia) of pressure and a temperature of 20 °C (68 °F) in accordance with the ASTM E681-85, Standard Test Method for Concentration Limits of Flammability of Chemicals or other equivalent method approved by the Associate Administrator. The flammability of aerosols is determined by the tests specified in paragraph (l) of this section.
(2) Does not meet the definition of Division 2.1 or 2.3.
(2) In the absence of adequate data on human toxicity, is presumed to be toxic to humans because when tested on laboratory animals it has an LC50 value of not more than 5000 mL/m 3 (see § 173.116(a) of this subpart for assignment of Hazard Zones A, B, C or D). LC50 values for mixtures may be determined using the formula in § 173.133(b)(1)(i) or CGA P-20 (IBR, see § 171.7 of this subchapter).
(d) Non-liquefied compressed gas. A gas, which when packaged under pressure for transportation is entirely gaseous at −50 °C (−58 °F) with a critical temperature less than or equal to −50 °C (−58 °F), is considered to be a non-liquefied compressed gas.
(2) Low pressure liquefied gas which is a gas with a critical temperature above + 65 °C (149 °F).
(f) Compressed gas in solution. A compressed gas in solution is a non-liquefied compressed gas which is dissolved in a solvent.
(g) Cryogenic liquid. A cryogenic liquid means a refrigerated liquefied gas having a boiling point colder than −90 °C (−130 °F) at 101.3 kPa (14.7 psia) absolute. A material meeting this definition is subject to requirements of this subchapter without regard to whether it meets the definition of a non-flammable, non-poisonous compressed gas in paragraph (b) of this section.
(h) Flammable range. The term flammable range means the difference between the minimum and maximum volume percentages of the material in air that forms a flammable mixture.
(i) Service pressure. The term service pressure means the authorized pressure marking on the packaging. For example, for a cylinder marked “DOT 3A1800”, the service pressure is 12410 kPa (1800 psig).
(j) Refrigerant gas or Dispersant gas. The terms Refrigerant gas and Dispersant gas apply to all nonpoisonous refrigerant gases; dispersant gases (fluorocarbons) listed in § 172.101 of this subchapter and §§ 173.304, 173.314(c), 173.315(a), and 173.315(h) and mixtures thereof; and any other compressed gas having a vapor pressure not exceeding 260 psia at 54 °C(130 °F), used only as a refrigerant, dispersant, or blowing agent.
(k) For Division 2.2 gases, the oxidizing ability shall be determined by tests or by calculation in accordance with ISO 10156 (including Technical Corrigendum 1) (IBR, see § 171.7 of this subchapter).
(3) Aerosols not meeting the provisions of paragraphs (l)(1) or (1)(2) of this section must be classed in accordance with the appropriate tests of the UN Manual of Tests and Criteria (IBR, see § 171.7 of this subchapter). An aerosol which was tested in accordance with the requirements of this subchapter in effect on December 31, 2005, is not required to be retested.
(4) Division 2.3 gases may not be transported in an aerosol container.
(5) When the contents are classified as Division 6.1, PG III or Class 8, PG II or III, the aerosol must be assigned a subsidiary hazard of Division 6.1 or Class 8, as appropriate.
(6) Substances of Division 6.1, PG I or II, and substances of Class 8, PG I are forbidden from transportation in an aerosol container.
(7) Flammable components are Class 3 flammable liquids, Division 4.1 flammable solids, or Division 2.1 flammable gases. The chemical heat of combustion must be determined in accordance with the UN Manual of Tests and Criteria (IBR, see § 171.7 of this subchapter).
(m) Adsorbed gas. A gas which when packaged for transport is adsorbed onto a solid porous material resulting in an internal receptacle pressure of less than 101.3 kPa at 20 °C and less than 300 kPa at 50 °C.
[Amdt. 173-224, 55 FR 52634, Dec. 21, 1990] Editorial Note:For Federal Register citations affecting § 173.115, see the List of CFR Sections Affected, which appears in the Finding Aids section of the printed volume and at www.fdsys.gov.
(v) Volatile Organic Liquids - Determination of Boiling Range of Organic Solvents Used as Raw Materials (ISO 4626) (IBR; see § 171.7 of this subchapter).
1 Viscosity determination: Where the substance concerned is non-Newtonian, or where a flow-cup method of viscosity determination is otherwise unsuitable, a variable shear-rate viscometer shall be used to determine the dynamic viscosity coefficient of the substance, at 23 °C (73.4 °F), at a number of shear rates. The values obtained are plotted against shear rate and then extrapolated to zero shear rate. The dynamic viscosity thus obtained, divided by the density, gives the apparent kinematic viscosity at near-zero shear rate.
20 < ν ≤ 80 20 < t ≤ 60 4 above 17 °C (62.6 °F).
80 < ν ≤ 135 60 < t ≤ 100 4 above 10 °C (50 °F).
135 < ν ≤ 220 20 < t ≤ 32 6 above 5 °C (41 °F).
220 < ν ≤ 300 32 < t ≤ 44 6 above −1 °C (31.2 °F).
300 < ν ≤ 700 44 < t ≤ 100 6 above −5 °C (23 °F).
700 < ν 100 < t 6 No limit.
(i) Viscosity test. The flow time in seconds is determined at 23 °C (73.4 °F) using the ISO standard cup with a 4 mm (0.16 inch) jet as set forth in ISO 2431 (IBR, see § 171.7 of this subchapter). Where the flow time exceeds 100 seconds, a further test is carried out using the ISO standard cup with a 6 mm (0.24 inch) jet.
(ii) Solvent Separation Test. This test is carried out at 23 °C (73 °F) using a 100.0 mL(3 ounces) measuring cylinder of the stoppered type of approximately 25.0 cm (9.8 inches) total height and of a uniform internal diameter of approximately 30 mm (1.2 inches) over the calibrated section. The sample should be stirred to obtain a uniform consistency, and poured in up to the 100 mL (3 ounces) mark. The stopper should be inserted and the cylinder left standing undisturbed for 24 hours. After 24 hours, the height of the upper separated layer should be measured and the percentage of this layer as compared with the total height of the sample calculated.
(a) The packing group of a Class 4 material is assigned in column (5) of the § 172.101 Table. When the § 172.101 Table provides more than one packing group for a hazardous material, the packing group shall be determined on the basis of test results following test methods given in the UN Manual of Tests and Criteria (IBR, see § 171.7 of this subchapter) and by applying the appropriate criteria given in this section.
(1) Powdered, granular or pasty materials must be classified in Division 4.1 when the time of burning of one or more of the test runs, in accordance with the UN Manual of Tests and Criteria, is less than 45 seconds or the rate of burning is more than 2.2 mm/s Powders of metals or metal alloys must be classified in Division 4.1 when they can be ignited and the reaction spreads over the whole length of the sample in 10 minutes or less.
(i) For readily combustible solids (other than metal powders), Packing Group II if the burning time is less than 45 seconds and the flame passes the wetted zone. Packing Group II must be assigned to powders of metal or metal alloys if the zone of reaction spreads over the whole length of the sample in 5 minutes or less.
(ii) For readily combustible solids (other than metal powders), Packing Group III must be assigned if the burning rate time is less than 45 seconds and the wetted zone stops the flame propagation for at least 4 minutes. Packing Group III must be assigned to metal powders if the reaction spreads over the whole length of the sample in more than 5 minutes but not more than 10 minutes.
(1) Pyrophoric liquids and solids of Division 4.2 are assigned to Packing Group I.
(C) A positive result is obtained in a test using a 100 mm sample cube at 100 °C and a negative result is obtained in a test using a 25 mm sample cube at 140 °C and the substance is transported in packagings with a volume of less than 450 L.
(3) Packing Group III, if the material reacts slowly with water at ambient temperatures such that the maximum rate of evolution of flammable gases is greater than 1 L per kilogram of material per hour, and which does not meet the criteria for Packing Group I or II.
(a) Definition. For the purpose of this subchapter, oxidizer (Division 5.1) means a material that may, generally by yielding oxygen, cause or enhance the combustion of other materials.
(ii) If test O.3 is used (UN Manual of Tests and Criteria, sub-section 34.4.3), the mean burning rate is greater than or equal to the burning rate of a 1:2 calcium peroxide/cellulose mixture.
(2) A liquid material is classed as a Division 5.1 material if, when tested in accordance with the UN Manual of Tests and Criteria, it spontaneously ignites or its mean time for a pressure rise from 690 kPa to 2070 kPa gauge is less then the time of a 1:1 nitric acid (65 percent)/cellulose mixture.
(B) If test O.3 is used (UN Manual of Tests and Criteria, sub-section 34.4.3), the mean burning rate is greater than the mean burning rate of a 3:1 calcium peroxide/cellulose mixture.
(B) If test O.3 is used (UN Manual of Tests and Criteria, sub-section 34.4.3), the mean burning rate is greater than the mean burning rate of a 1:1 calcium peroxide/cellulose mixture and the criteria for Packing Group I are not met.
(B) If test O.3 is used (UN Manual of Tests and Criteria, sub-section 34.4.3), the mean burning rate is greater than the mean burning rate of a 1:2 calcium peroxide/cellulose mixture and the criteria for Packing Groups I and II are not met.
(A) If test O.1 is used (UN Manual of Tests and Criteria, sub-section 34.4.1), the sample tested does not ignite and exhibit burn, or exhibits a mean burning time of greater than or equal to the mean burning time of a 3:7 potassium bromate/cellulose mixture.
(B) If test O.3 is used (UN Manual of Tests and Criteria, sub-section 34.4.3), the sample tested does not ignite and exhibit burn, or exhibits a mean burning rate less than or equal to the mean burning rate of a 1:2 calcium peroxide/cellulose mixture.
(B) Any material which exhibits a mean pressure rise time less than the pressure rise time of a 1:1 perchloric acid (50 percent)/cellulose mixture.
(ii) Packing Group II, any material which exhibits a mean pressure rise time less than or equal to the pressure rise time of a 1:1 aqueous sodium chlorate solution (40 percent)/cellulose mixture and the criteria for Packing Group I are not met.
(iii) Packing Group III, any material which exhibits a mean pressure rise time less than or equal to the pressure rise time of a 1:1 nitric acid (65 percent)/cellulose mixture and the criteria for Packing Group I and II are not met.
(a) Packing Group I. Materials that cause full thickness destruction of intact skin tissue within an observation period of up to 60 minutes starting after the exposure time of three minutes or less.
(b) Packing Group II. Materials other than those meeting Packing Group I criteria that cause full thickness destruction of intact skin tissue within an observation period of up to 14 days starting after the exposure time of more than three minutes but not more than 60 minutes.
(2) That do not cause full thickness destruction of intact skin tissue but exhibit a corrosion on either steel or aluminum surfaces exceeding 6.25 mm (0.25 inch) a year at a test temperature of 55 °C (130 °F) when tested on both materials. The corrosion may be determined in accordance with the UN Manual of Tests and Criteria (IBR, see § 171.7 of this subchapter) or other equivalent test methods.
When an initial test on either a steel or aluminum surface indicates the material being tested is corrosive, the follow up test on the other surface is not required.
The packing group of a Class 9 material is as indicated in column 5 of the § 172.101 table.
Until December 31, 2020 and for the purposes of this subchapter, “ORM-D material” means a material such as a Consumer commodity, Cartridges, small arms, Cartridges, power devices (used to project fastening devices), Cartridges for tools, blank, and Cases, cartridge, empty with primer, which, although otherwise subject to the regulations of this subchapter, presents a limited hazard during transportation due to its form, quantity and packaging. The article or substance must be a material for which exceptions are provided in Column (8A) of the § 172.101 Hazardous Materials Table.
Packing groups are not assigned to ORM-D materials.
(a) General. Exceptions for hazardous materials shipments in the following paragraphs are permitted only if this section is referenced for the specific hazardous material in the § 172.101 Table of this subchapter.
(2) For flammable liquids in Packing Group II, inner packagings not over 1.0 L (0.3 gallons) net capacity each, packed in a strong outer packaging.
(3) For flammable liquids in Packing Group III and combustible liquids, inner packagings not over 5.0 L (1.3 gallons) net capacity each, packed in a strong outer packaging.
(c) Consumer commodities. Until December 31, 2020, a limited quantity package containing a “consumer commodity” as defined in § 171.8 of this subchapter, may be renamed “Consumer commodity” and reclassed as ORM-D or, until December 31, 2012, as ORM-D-AIR material and offered for transportation and transported in accordance with the applicable provisions of this subchapter in effect on October 1, 2010.
(iii) When carried as cargo, contains more than 24% but not more than 70% alcohol by volume in an inner packaging not exceeding 5 L (1.3 gallons).
(1) May be reclassed as a combustible liquid.
(2) Is not subject to the requirements of this subchapter if it contains no less than 50 percent water.
(f) Combustible liquids. (1) A flammable liquid with a flash point at or above 38 °C (100 °F) that does not meet the definition of any other hazard class may be reclassed as a combustible liquid. This provision does not apply to transportation by vessel or aircraft, except where other means of transportation is impracticable.
(xi) For bulk packagings only, registration requirements of subpart G of part 107 of this subchapter.
(iii) Is not offered for transportation or transported as a liquid at a temperature at or above its flash point.
(D) For weight greater than one pound up to 8 pounds the company name and the words “Contains Ethyl Alcohol” are marked on the package.
(D) For weight greater than 1/2 pound up to 1 pound the company name and the words “Contains Ethyl Alcohol” are marked on the package.
(iii) The net liquid contents of all inner packagings in any single outer packaging may not exceed 192 fluid ounces. The net solid contents of all inner packagings in any single outer packaging may not exceed 32 pounds. The gross weight of any single outer package shipped may not exceed 65 pounds; Inner packagings must secured and cushioned within the outer package to prevent breakage, leakage, and movement.
(iii) The net liquid contents of all inner packagings in any single outer packaging may not exceed 192 fluid ounces. The net solid contents of all inner packagings in any single outer packaging may not exceed 32 pounds. The gross weight of any single outer package shipped may not exceed 65 pounds. Inner packagings must be secured and cushioned within the outer package to prevent breakage, leakage, and movement.
(ii) 1 pound of solids containing flammable liquid.
(3) Each dispenser must be blocked, braced or strapped to the motor vehicle in accordance with the requirements of this subchapter to prevent shifting during transportation.
(i) Reverse logistics. Hazardous materials meeting the definition of “reverse logistics” under § 171.8 of this subchapter and in compliance with paragraph (b) of this section may be offered for transport and transported in highway transportation in accordance with § 173.157.
[Amdt. 173-224, 55 FR 52634, Dec. 21, 1990] Editorial Note:For Federal Register citations affecting § 173.150, see the List of CFR Sections Affected, which appears in the Finding Aids section of the printed volume and at www.fdsys.gov.
(i) For flammable solids in Packing Group II, inner packagings not over 1.0 kg (2.2 pounds) net capacity each, packed in a strong outer packaging.
(ii) For flammable solids in Packing Group III, inner packagings not over 5.0 kg (11 pounds) net capacity each, packed in a strong outer packaging.
(2) For transportation by highway or rail, Charcoal briquettes (NA1361) may be packaged as a limited quantity in accordance with paragraph (b) of this section in packagings not exceeding 30 kg gross weight and are eligible for the exceptions provided in § 173.156.
(c) Consumer commodities. Until December 31, 2020, a limited quantity package (including Charcoal briquettes (NA1361)) containing a “consumer commodity” as defined in § 171.8 of this subchapter, may be renamed “Consumer commodity” and reclassed as ORM-D or, until December 31, 2012, as ORM-D-AIR material and offered for transportation and transported in accordance with the applicable provisions of this subchapter in effect on October 1, 2010. For transportation by aircraft, the maximum net mass for Charcoal briquettes (NA1361) is 25 kg per package.
(1) For dangerous when wet solids in Packing Group II, inner packagings not over 0.5 kg (1.1 pounds) net capacity each, packed in a strong outer packaging.
(2) For dangerous when wet solids in Packing Group III, inner packagings not over 1.0 kg (2.2 pounds) net capacity each, packed in a strong outer packaging.
(iv) The can is then placed into a heat sealed barrier bag.
(ii) Records must be retained for a minimum of 5 years and be accessible at or through the shipper's principal place of business and be made available, upon request, to the Associate Administrator or designated official.
(f) Reverse logistics. Except for Division 4.2 hazardous materials and self-reactive materials, hazardous materials meeting the definition of “reverse logistics” under § 171.8 of this subchapter and in compliance with paragraph (b) of this section may be offered for transport and transported in highway transportation in accordance with § 173.157.
[Amdt. 173-224, 55 FR 52634, Dec. 21, 1990] Editorial Note:For Federal Register citations affecting § 173.151, see the List of CFR Sections Affected, which appears in the Finding Aids section of the printed volume and at www.fdsys.gov.
(1) For oxidizers in Packing Group II, inner packagings not over 1.0 L (0.3 gallon) net capacity each for liquids or not over 1.0 kg (2.2 pounds) net capacity each for solids, packed in a strong outer packaging.
(2) For oxidizers in Packing Group III, inner packagings not over 5 L (1.3 gallons) net capacity each for liquids or not over 5.0 kg (11 lbs) net capacity each for solids, packed in a strong outer packaging.
(i) Except for transportation by aircraft, for Type B or C organic peroxides, inner packagings not over 25 mL (0.845 ounces) net capacity each for liquids or 100 g (3.528 ounces) net capacity for solids, packed in a strong outer packaging.
(ii) For Type D, E, or F organic peroxides, inner packagings not over 125 mL (4.22 ounces) net capacity each for liquids or 500 g (17.64 ounces) net capacity for solids, packed in a strong outer packaging.
(d) Reverse logistics. Except for Division 5.2 hazardous materials, hazardous materials meeting the definition of “reverse logistics” under § 171.8 of this subchapter and in compliance with paragraph (b) of this section may be offered for transport and transported in highway transportation in accordance with § 173.157.
(1) For poisonous materials in Packing Group II, inner packagings not over 100 mL (3.38 ounces) each for liquids or 0.5 kg (1.1 pounds) each for solids, packed in a strong outer packaging. Inner packagings containing a liquid poisonous material which is also a drug or medicine in Packing Group II may be increased to not over 250 mL (8 ounces) each and packed in a strong outer packaging.
(2) For poisonous materials in Packing Group III, inner packagings not over 5 L (1.3 gallons) each for liquids or 5.0 kg (11 pounds) each for solids, packed in a strong outer packaging.
(c) Consumer commodities. Until December 31, 2020, a limited quantity package of poisonous material in Packing Group III or a drug or medicine in Packing Group II or III that is also a “consumer commodity” as defined in § 171.8 of this subchapter, may be renamed “Consumer commodity” and reclassed as ORM-D or, until December 31, 2012, as ORM-D-AIR material and offered for transportation and transported in accordance with the applicable provisions of this subchapter in effect on October 1, 2010.
(d) Reverse logistics. Hazardous materials meeting the definition of “reverse logistics” under § 171.8 of this subchapter and in compliance with paragraph (b) of this section may be offered for transport and transported in highway transportation in accordance with § 173.157.
(1) For corrosive materials in Packing Group II, inner packagings not over 1.0 L (0.3 gallon) net capacity each for liquids or not over 1.0 kg (2.2 pounds) net capacity each for solids, packed in a strong outer packaging.
(2) For corrosive materials in Packing Group III, inner packagings not over 5.0 L (1.3 gallons) net capacity each for liquids or not over 5.0 kg (11 lbs) net capacity each for solids, packed in a strong outer packaging.
(2) On steel is not subject to any other requirements of this subchapter when transported by motor vehicle or rail car in a bulk packaging constructed of materials that will not react dangerously with or be degraded by the corrosive material.
(e) Reverse logistics. Hazardous materials meeting the definition of “reverse logistics” under § 171.8 of this subchapter and in compliance with paragraph (b) of this section may be offered for transport and transported in highway transportation in accordance with § 173.157.
(1) For miscellaneous materials in Packing Group II, inner packagings not over 1.0 L (0.3 gallon) net capacity each for liquids or not over 1.0 kg (2.2 pounds) net capacity each for solids, packed in a strong outer packaging.
(2) For miscellaneous materials in Packing Group III, inner packagings not over 5.0 L (1.3 gallons) net capacity each for liquids or not over 5.0 kg (11 lbs) net capacity each for solids, packed in a strong outer packaging.
(d) Reverse logistics. Except for Lithium batteries, hazardous materials meeting the definition of “reverse logistics” under § 171.8 of this subchapter and in compliance with paragraph (b) of this section may be offered for transport and transported in highway transportation in accordance with § 173.157.
(a) Exceptions for hazardous materials shipments in the following paragraphs are permitted only if this section is referenced for the specific hazardous material in the § 172.101 Table or in a packaging section in this part.
(iii) Transported to or from a manufacturer, a distribution center, or a retail outlet, or transported to a disposal facility from one offeror.
(v) The maximum net quantity of hazardous material permitted on one palletized unit is 250 kg (550 pounds).
(iv) The maximum net quantity of hazardous material permitted in one palletized unit is 550 kg (1,210 lbs.).
(ii) As a limited quantity as prescribed in § 172.315 of this subchapter.
(d) Exceptions for waste limited quantities and ORM-D materials. Exceptions for certain waste limited quantity and ORM-D materials are prescribed in § 173.12(h).
(a) Authorized hazardous materials. Hazardous materials may be offered for transport and transported in highway transportation under this section when they meet the definition of reverse logistics as defined under § 171.8 of this subchapter. However, hazardous materials that meet the definition of a hazardous waste as defined in § 171.8 of this subchapter are not permitted to be offered for transport or transported under this section. Hazardous materials authorized for transport according to a special permit as defined in § 171.8 of this subchapter must be offered for transportation and transported as authorized by the special permit.
(b) When offered for transport or transported by non-private carrier. Hazardous materials must be both authorized for limited quantity provisions as well as explicitly authorized for reverse logistics transportation under their applicable limited quantities section. Except for alternative training provisions authorized under paragraph (e) of this section, all hazardous materials must otherwise meet the requirements for a limited quantity shipment.
(1) Division 1.4G materials offered for transport and transported in accordance with § 173.65 of this subchapter.
(2) When sold in retail facilities; Division 1.4G or 1.4S fireworks, Division 1.4G ammunition, or Division 1.4G or 1.4S flares. Shipments offered for transport or transported under this subparagraph are limited to 30 kg (66 pounds) per package. All explosive materials subject to an approval must meet the terms of the approval, including packaging required by the approval.
(i) Flammable liquid-powered equipment. The fuel tank and fuel lines of equipment powered by an internal combustion engine must be in the closed position, and all fuel tank caps or closures must be securely in place.
(ii) Flammable gas-powered equipment. A combustion engine using flammable gas fuel or other devices using flammable gas fuel (such as camping equipment, lighting devices, and torch kits) must have the flammable gas source disconnected and all shut-off devices in the closed position.
(4) Division 2.1 or 2.2 compressed gases weighing less than 66 pounds and sold as retail products. For the purposes of this section a cylinder or aerosol container may be assumed to meet the definition of a Division 2.1 or 2.2 materials, respectively, even if the exact pressure is unknown.
(5) Materials shipped under this paragraph (c) must also comply with the segregation requirements as required in § 177.848.
(6) Shipments made under this section are subject to the incident reporting requirements in § 171.15.
(d) Hazard communication. Hazardous materials offered for transportation and transported by private carrier in accordance with paragraph (c) of this section may use the marking “REVERSE LOGISTICS - HIGHWAY TRANSPORT ONLY - UNDER 49 CFR 173.157” as an alternative to the surface limited quantity marking found under § 172.315(a). Size marking requirements found in § 172.301(a)(1) apply.
(e) Training. (1) Any person preparing a shipment under this section must have clear instructions on preparing the reverse logistics shipment to the supplier, manufacturer, or distributor from the retail store. This includes information to properly classify, package, mark, offer, and transport. These instructions must be provided by the supplier, manufacturer, or distributor to ensure the shipment is correctly prepared for transportation or through training requirements prescribed under part 172 subpart H of this subchapter.
(iii) Document that employees are familiar with the requirements of this section as well as the specific return instructions for the products offered under this section. Documentation must be retained while the employee is employed and 60-days thereafter. Alternatively, recordkeeping requirements under part 172 subpart H may be used.

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