Organic gases and vapors, the boiling point of which is above 65 °С
(benzene, xylene, toluene, petrol, kerosene, organic halides, nitro-compounds of benzene
and its homologues, aniline, ketones, tetraethyl lead, etc.)
Nonorganic gases and vapors
(chlorine, fluorine, bromine, sulfur hydride, arsines, hydrogen phosphide, etc., except for carbon
monoxide and hydrogen cyanide)
Acid gases and vapors
(sulfur dioxide, hydrogen chloride, hydrogen bromide, hydrogen fluoride, vapors of sulfuric,
acetic, formic, nitric, phosphoric acids, etc.)
Ammonia and its organic derivatives