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06/02/2026

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Hazmat -

§173.53 Provisions for using old classifications of explosives.

RegSense Pipeline and Hazardous Materials Safety Administration (PHMSA), DOT CFR Regulations Hazmat Safety Hazmat CFR Section Focus Area English Transportation USA

Where the classification system in effect prior to January 1, 1991, is referenced in State or local laws, ordinances or regulations not pertaining to the transportation of hazardous materials, the following table may be used to compare old and new hazard class names:

Current classification	Class name prior to Jan. 1, 1991
Division 1.1	Class A explosives.
Division 1.2	Class A or Class B explosives.
Division 1.3	Class B explosive.
Division 1.4	Class C explosives.
Division 1.5	Blasting agents.
Division 1.6	No applicable hazard class.

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