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Summary of Placarding Requirements

The hazardous materials placarding requirements are found in 49 CFR Part 172, Subpart F.

The requirements are summarized as follows:

Except for Division 6.2 and Class 9 materials, any quantity of a hazardous material offered for transportation or transported in a bulk packaging requires placarding.
For materials offered for transportation or transported in a nonbulk packaging the quantity that requires placarding depends on whether the material is in a class or division included in Table 1 or Table 2 below:

Table 1 (Placard any Quantity)

Hazard Class or Division	Placard Name
1.1 ..........................................................	EXPLOSIVES 1.1
1.2 ..........................................................	EXPLOSIVES 1.2
1.3 ..........................................................	EXPLOSIVES 1.3
2.3 ..........................................................	POISON GAS
4.3 ..........................................................	DANGEROUS WHEN WET
5.2 (Organic peroxide, Type B, liquid or solid, temperature controlled) ...........	ORGANIC PEROXIDE
6.1 (Materials Poisonous by Inhalation) .......	POISON INHALATION HAZARD
7 (Radioactive Yellow III label only) .....	RADIOACTIVE

Table 2 (Placard when the aggregate gross weight of
hazardous materials is 1,001 pounds or more)

Hazard Class or Division	Placard Name
1.4 ..........................................................	EXPLOSIVES 1.4
1.5 ..........................................................	EXPLOSIVES 1.5
1.6 ..........................................................	EXPLOSIVES 1.6
2.1 ..........................................................	FLAMMABLE GAS
2.2 ..........................................................	NON-FLAMMABLE GAS
3 ..........................................................	FLAMMABLE
Combustible Liquid ..................................	COMBUSTIBLE
4.1 ..........................................................	FLAMMABLE SOLID
4.2 ..........................................................	SPONTANEOUSLY COMBUSTIBLE
5.1 ..........................................................	OXIDIZER
5.2 (Other than organic peroxide, Type B, liquid or solid, temperature controlled) .......................................	ORGANIC PEROXIDE
6.1 (Other than material poisonous by inhalation) .............................	POISON
6.2 (Infectious substance) ........................	NONE
8 ..........................................................	CORROSIVE
9 ..........................................................	CLASS 9 (placard not required for domestic transportation)
ORM-D .................................................	NONE

Note: The following materials are excepted from the placarding requirements: infectious substances; hazardous materials classed as ORM-D; hazardous materials authorized to be offered for transportation as Limited Quantities when identified as such on shipping papers; hazardous materials prepared in accordance with 49 CFR 173.13; hazardous materials which are packaged as small quantities under the provisions of 49 CFR 173.4; combustible liquids in non-bulk packagings (see 49 CFR 172.500(b)); and materials offered or transported under the "materials of trade" exception (see 49 CFR 173.6).

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PHMSA - Pipeline and Hazardous Materials Safety Administration - 2005

Summary of Placarding Requirements

Table 1 (Placard any Quantity)

Table 2 (Placard when the aggregate gross weight of hazardous materials is 1,001 pounds or more)

Table 2 (Placard when the aggregate gross weight of
hazardous materials is 1,001 pounds or more)