F5 - Flammable Liquid and Poison. UN Class 3 Flammable Liquids (HCCs F1, F2, F3, or F4) that also have
the hazards of UN division 6.1, Poisons (HCCs T1, T2, T3, T4, or T6)
F6 - Flammable Liquid and Corrosive, Acidic. UN Class 3 Flammable Liquids (HCCs F1, F2, F3, or F4) that
also have the hazards of UN Class 8 Corrosive materials and are acidic in nature meeting the definition of HCC
C1 or C2.
F7 - Flammable Liquid and Corrosive, Alkali. United Nations Class 3 Flammable Liquids (HCCs F1, F2, F3,
or F4) that also have the hazards of United Nations Class 8 Corrosive materials and are alkali (caustic/basic) in
nature meeting the definition of HCC B1 or B2.
F8 - Flammable Solid. Any product which is required to be shipped as UN Class 4.1 under 49 CFR 173.124
which under conditions normally incident to transportation or storage is likely to cause fires through friction,
retained heat from manufacturing or processing, or which can be readily ignited and when ignited burns so
vigorously and persistently as to create a serious transportation hazard.
G1 - Gas, Poison (Nonflammable). Any product which is required to be shipped as UN Class 2.3 under 49 CFR
173.115 (c) (Gas poisonous by inhalation) and is required to be marked "Inhalation Hazard" under 49 CFR
172.313. This means a material which is a gas at 20oC (68oF) or lower at one atmosphere of pressure (101.3 kPa,
14.7 psi)(a material which has a boiling point of 20oC (68oF) or lower at 1 atmosphere) and which:
(a) Is known to be so toxic to humans as to pose a hazard to health during transportation; or
(b) In the absence of adequate data on human toxicity, is presumed to be so toxic to humans, because when
tested on young adult albino rats for 1 hour, it has an LC50 (inhalation rat) less than 5000 ml/m3 (ppm); and
(c) Meets the definition of Nonflammable Gas (HCC G3).
Codes 1,2,3,4,5,6, or 13 are listed in the special provisions column of 49 CFR 172.101 for those shipping names
that are poison-inhalation hazard and would require this HCC.
G2 - Gas, Flammable. Any product, other than a flammable aerosol, which is required to be shipped as a UN
Class 2.1 (Flammable gas) under 49 CFR 173.115 (a). This means any material which is a gas at 20oC (68oF) or
lower at 1 atmosphere of pressure (101.3 kPa, 14.7 psi) (a material which has a boiling point of 20oC (68oF) or
lower at 1 atmosphere) and which:
(a) Is ignitable at 1 atmosphere when in a mixture of 13 percent or less by volume with air; or
(b) At 1 atmosphere with air has a flammable range of at least 12 percent regardless of the lower limit.
(c) The limits specified above shall be determined at 1 atmosphere of pressure and a temperature of 20oC (68oF)
in accordance with ASTM E681-85 (or latest version), Standard Test Method for Limits of Flammability of
Chemicals.
B-7
