Group D

Atmospheres containing gasoline, hexane, naptha, benzene, butane, propane, alcohol, acetone, benzol, lacquer solvent vapors, or natural gas.

acetic acid (glacial)
acetone
acrylonitrile
ammonia (3)
benzene
butane
1-butanol (butyl alcohol)
2-butanol (secondary butyl alcohol)
n-butyl acetate
isobutyl acetate
di-isobutylene
ethane
ethanol (ethyl alcohol)
ethyl acetate
ethyl acrylate (inhibited)
ethylene diamine (anhydrous)
ethylene dichloride
ethylene glycol monomethyl ether
gasoline
heptanes
hexanes
isoprene
isopropyl ether
mesityl oxide
methane (natural gas)
methanol (methyl alcohol)
3-methyl-1 butanol (isoamyl alcohol)
methyl ethyl ketone
methyl isobutyl ketone

2-methyl-1 -propanol
(isobutyl alcohol)
2-methyl-2-propanol
(tertiary butyl alcohol)
petroleum naphtha (4)
pyridine
octanes
pentanes
1-pentanol (amyl alcohol)
propane
1-propanol (propyl alcohol)
2-propanol (isopropyl alcohol)
propylene
styrene
toluene
vinyl acetate
vinyl chloride
xylenes

(3) See Safety Code for Mechanical Refrigeration (ANSI/ASHRAE 15-1978) and Safety Requirements for the Storage and Handling of Anhydrous Ammonia (ANSI/CGA G2.1-1972).
(4) A saturated hydrocarbon mixture boiling in the range 20-135 -C (68-275 -F). Also known by the synonyms benzine, ligroin, petroleum ether, or naphtha.