USDOT HazMat Placards: Class 1 Explosives (pg 1 of 2) (EnvironmentalChemistry.com)

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USDOT HazMat Placards

Class 1 Explosives (pg 1 of 2)
49CFR 173.50

Explosives are any substance or article, including a device, which is designed to function by explosion or which, by chemical reaction within itself is able to function in a similar manner even if not designed to function by explosion (unless the article is otherwise classed under a provision of 49CFR).

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CDs containing high-resolution "clipart" versions of each hazmat placard can be purchased from us for $50 U.S. including shipping (via U.S. Mail). For more information and/or to order the CD, please see our placarding CD ordering page.

* Compatibility Groups:
49CFR 173.52

'A' Primary explosive substance (1.1A, 1.2A)

'B' Article containing a primary explosive substance and not containing two or more effective protective features. Some articles, such as detonators for blasting, detonator assemblies for blasting and primers, cap-type, are included, even though they contain primary explosives (1.1B, 1.2B, 1.4B)

'C' Propellant explosive substance or other deflagrating explosive substance or article containing such explosive substance (1.1C, 1.2C, 1.3C, 1.4C)

'D' Secondary detonating explosive substance or black powder or article containing a secondary detonating explosive substance, in each case without means of initiation and without a propelling charge, or article containing a primary explosive substance and containing two or more effective protective features. (1.1D, 1.2D, 1.4D, 1.5D)

'E' Article containing a secondary detonating explosive substance without means of initiation, with a propelling charge (other than one containing flammable liquid, gel or hypergolic liquid) (1.1E, 1.2E, 1.4E)

'F' Article containing a secondary detonating explosive substance with its means of initiation, with a propelling charge (other than one containing flammable liquid, gel or hypergolic liquid) or without a propelling charge (1.1F, 1.2F, 1.3F, 1.4F)

'G' Pyrotechnic substance or article containing a pyrotechnic substance, or article containing both an explosive substance and an illuminating, incendiary, tear-producing or smoke-producing substance (other than a water-activated article or one containing white phosphorus, phosphide or flammable liquid or gel or hypergolic liquid) (1.1G, 1.2G, 1.3G, 1.4G)

'H' Article containing both an explosive substance and white phosphorus (1.2H, 1.3H)

'J' Article containing both an explosive substance and flammable liquid or gel (1.1J, 1.2J, 1.3J)

'K' Article containing both an explosive substance and a toxic chemical agent (1.2K, 1.3K)

'L' Explosive substance or article containing an explosive substance and presenting a special risk (e.g., due to water-activation or presence of hypergolic liquids, phosphides or pyrophoric substances) needing isolation of each type (1.1L, 1.2L, 1.3L)

'N' Articles containing only extremely insensitive detonating substances (1.6N)

'S' Substance or article so packed or designed that any hazardous effects arising from accidental functioning are limited to the extent that they do not significantly hinder or prohibit fire fighting or other emergency response efforts in the immediate vicinity of the package (1.4S)

Hazardous Materials Load & Segregation Chart
49CFR 177.848

	Wt		1.1	1.2	1.3	1.4	1.5	1.6	2.1	2.2	2.2	2.3 A	2.3 B	3	4.1	4.2	4.3	5.1	5.2	6.1 A	7	8
Key: 49CFR 177.848(e) '*' This indicates that segregation among different Class 1 materials is governed by the compatibility table in 49CFR 177.848(f) 'X' These materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation. 'O' Indicates that these materials may not be loaded, transported or stored together in the same transport vehicle or storage facility during the course of transportation, unless separated in a manner that, in the event of leakage from packages under conditions normally incident to transportation, commingling of hazardous materials would not occur. 'A' This note means that, notwithstanding the requirements of the letter 'X', ammonium nitrate fertilizer may be loaded or stored with Division 1.1 or Division 1.5 materials. The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
1.1	Any Qty	A	*	*	*	*	*	*	X	X	X	X	X	X	X	X	X	X	X	X	X	X
1.2	Any Qty	A	*	*	*	*	*	*	X	X	X	X	X	X	X	X	X	X	X	X	X	X
1.3	Any Qty		*	*	*	*	*	*	X			X	X	X		X		X	X	X		X
1.4	1001 lb		*	*	*	*	*	*	O			O	O	O		O				O		O
1.5	1001 lb	A	*	*	*	*	*	*	X	X	X	X	X	X	X	X	X	X	X	X	X	X
1.6	1001 lb		*	*	*	*	*	*

CONTINUED...

Last updated: Feb 2007

Related Resources

• Guide for Handling Household Chemicals
  Things you can do to make your home safer.
• USDOT Hazardous Materials Table 49 CFR 172.101
  An online version of the USDOT hazardous materials table from 49CFR 172.101. This table can be sorted by proper shipping name, UN/NA ID and/or by primary hazard class/division.
• ERG (Emergency Response Guidebook)
  Have you ever wondered what those four digit numbers on the placards on the side of trucks and rail cars mean? Our online 2004ERG will give you your answer. This is an online version of the guidebook produced by the USDOT for first responders during the initial phase of a Dangerous goods/HazMat incident.
• Chemical Database
  This database focuses on the most common chemical compounds used in the home and industry.

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To ensure regulatory compliance when transporting hazardous materials or dangerous goods, one must receive proper training and certification from a qualified instructor and refer to the current year's Code of Federal Regulations Title 49 (49CFR) or your country's shipping regulations. In matters regarding workplace safety, refer to current OSHA regulations (29CFR) and NIOSH guidelines or your own country's health and safety regulations. No one should ever enter into a hazardous environment without proper training from qualified instructors.

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Kenneth Barbalace. USDOT HazMat Placards - Class 1 Explosives. EnvironmentalChemistry.com. 1995 - 2025. Accessed on-line: 2/20/2025
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