D3 - Oxidizer and Corrosive - Acidic. An oxidizing material (HCC D1), other than a compressed gas (HCC
G4), that also meets the definition of a corrosive material, acidic (HCC C1 or C2).
D4 - Oxidizer and Corrosive - Alkali. An oxidizing material (HCC D1), other than a compressed gas (HCC
G4), that also meets the definition of a corrosive material, alkali (HCC B1 or B2).
E1 - Explosives, Military. Items classed as explosives, UN Class 1, Division 1.1, 1.2, 1.3, 1.4 (except 1.4S),
and 1.5 as defined in 49 CFR 173.50 and all Military Explosives identified by a Department of Defense
Ammunition Code (DoDAC). (See DoD Standard DoD 6055.9, for hazard classification and compatibility
groups).
E2 - Explosives, Low Risk. Items classed as explosives, UN Class 1, Division 1.4S and 1.6, as defined in 49
CFR 173.50. Division 1.4S consists of explosives that present a minor explosion hazard. The explosive effects
are largely confined to the package and no projection of fragments of appreciable size or range is to be expected.
An external fire must not cause virtually instantaneous explosion of almost the entire contents of the package.
The compatibility group "S" indicates that the item is so packed or designed that any hazardous effects arising
from accidental functioning are confined within the package. If the package has been degraded by fire, all blast or
projection effects are limited to the extent that they do not significantly hinder fire fighting or other emergency
response efforts in the immediate vicinity of the package. Division 1.6 consists of extremely insensitive items
which do not have a mass explosion hazard and which demonstrate a negligible probability of accidental
initiation or propagation.
F1 - Flammable Liquid, Packing Group I, OSHA IA. A product meeting the definition of a flammable liquid
(UN Class 3) under 49 CFR 173.120 and classed as a Packing Group I under 49 CFR 173.121 with an initial
boiling point less than or equal to 95oF (35oC). Included in this definition are OSHA IA liquids except those that
have a boiling point between 95oF and 100oF. The definitions for OSHA classes of flammable liquids are found
in 29 CFR 1910.106.
F2 - Flammable Liquid, Packing Group II, OSHA IB. A product meeting the definition of a flammable liquid
(UN Class 3) under 49 CFR 173.120 and classed as a Packing Group II under 49 CFR 173.121 with a flash point
less than 73oF (23oC) and an initial boiling point of more than 95oF (35oC). Included in this definition are OSHA
IB liquids and the balance of OSHA IA liquids with boiling points between 95oF and 100oF.
F3 - Flammable Liquid, Packing Group III, OSHA IC. A product meeting the definition of a flammable
liquid (UN Class 3) under 49 CFR 173.120 and classed as a Packing Group III under 49 CFR 173.121 with a
flash point greater than or equal to 73oF (23oC) but less than 100oF (38oC). Included in this definition are OSHA
IC liquids.
F4 - Flammable Liquid, Packing Group III, OSHA II. A product meeting the definition of a flammable liquid
(UN Class 3) under 49 CFR 173.120 and classed as a Packing Group III under 49 CFR 173.121 but with a flash
point greater than or equal to 100oF (38oC) and less than or equal to 141oF (60.5oC). Included in this definition
are OSHA II liquids.
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