49 C.F.R. § 173.2 Hazardous materials classes and index to hazard class definitions.
Title 49 - Transportation
The hazard class of a hazardous material is indicated either by its class (or division) number, its class name, or by the letters “ORM-D”. The following table lists class numbers, division numbers, class or division names and those sections of this subchapter which contain definitions for classifying hazardous materials, including forbidden materials. [Amdt. 173–224, 55 FR 52606, Dec. 21, 1990, as amended at 57 FR 45460, Oct. 1, 1992; Amdt. 173–234, 58 FR 51531, Oct. 1, 1993]
Title 49: Transportation
PART 173—SHIPPERS—GENERAL REQUIREMENTS FOR SHIPMENTS AND PACKAGINGS
Subpart A—General
§ 173.2 Hazardous materials classes and index to hazard class definitions.
------------------------------------------------------------------------ 49 CFR Division reference Class No. No. (if Name of class or division for any) definitions------------------------------------------------------------------------None ........... Forbidden materials.......... 173.21None ........... Forbidden explosives......... 173.541 1.1 Explosives (with a mass 173.50 explosion hazard).1 1.2 Explosives (with a projection 173.50 hazard).1 1.3 Explosives (with 173.50 predominately a fire hazard).1 1.4 Explosives (with no 173.50 significant blast hazard).1 1.5 Very insensitive explosives; 173.50 blasting agents.1 1.6 Extremely insensitive 173.50 detonating substances.2 2.1 Flammable gas................ 173.1152 2.2 Non-flammable compressed gas. 173.1152 2.3 Poisonous gas................ 173.1153 ........... Flammable and combustible 173.120 liquid.4 4.1 Flammable solid.............. 173.1244 4.2 Spontaneously combustible 173.124 material.4 4.3 Dangerous when wet material.. 173.1245 5.1 Oxidizer..................... 173.1275 5.2 Organic peroxide............. 173.1286 6.1 Poisonous materials.......... 173.1326 6.2 Infectious substance 173.134 (Etiologic agent).7 ........... Radioactive material......... 173.4038 ........... Corrosive material........... 173.1369 ........... Miscellaneous hazardous 173.140 material.None ........... Other regulated material: ORM- 173.144 D.------------------------------------------------------------------------
