Physical Classification

The physical classification is very simple and is based upon physical state or form of the substance under ordinary conditiona, i.e., temperature 68°F. (20°C.) and atmospheric pressure (760 mm. Hg). Thus, an agent is a true gas, if its boiling point is below ordinary atmospheric temperature, as is the case with chlorine (b.p. — 28°F.). This classification as a true gas is not to be confused with the broad generic term gas, used to refer generally to toxic chemical agents, but means that the substance is in a gaseous state under ordinary temperatures and pressures.

Classification of Chemical Agents Accohding to Physical State

Carbon monoxide.. ,i -310

Carbon monoxide.. ,i -310

* Mailing point.

Brombeniyl cyanide.

Hydrocyanic acid

Acrolein

Monochlormethylehloro-

Chlorpicrin

Chloraceton*

Trirhlormethylchloro-

formate

MfthyUulfuryl chloride... Brommethylethyl ketone...

Bromacetom*

Perchlormethylmercaptan.

Ethyldichloramlne

Ethyl bromareUte

Dimethyl »uliate

Lewisite

Beoxyl bromide

Pbenylcarbylumine chloride

Xylyl bromide

Dichlorethyl sulfide

? Phenyldicbloraraine

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