Agent Name

Thiophosphoryl chloride

CAS Number

3982-91-0

Formula

Cl3-P-S

Major Category

Toxic Gases & Vapors

Synonyms

Fosforthiochlorid [Czech]; Phosphine sulfide, trichloro-; Phosphorothioic trichloride; Phosphorothionic trichloride; Phosphorous sulfochloride; Phosphorous thiochloride; Phosphorous trichloride sulfide; Phosphorus chloride sulfide; Phosphorus sulfochloride; Phosphorus thiochloride; Phosphorus trichloride sulfide; Sulfidotrichlorid fosforecny [Czech]; TL 262; Thiochlorid fosforecny [Czech]; Thiophosphoric trichloride; Thiophosphoryl chloride (PSCl3); Thiophosphoryl trichloride; Trichlorophosphine sulfide; [ChemIDplus] UN1837

Category

Other Toxic Gases & Vapors

Description

Colorless fuming liquid with pungent odor; [ICSC]

Sources/Uses

Used to make insecticides (e.g., parathion); [HSDB]

Comments

Hydrolyzed by water forming orthophosphoric acid, hydrochloric acid, and hydrogen sulfide; A strong irritant; [Merck Index] Decomposed by heating and water or humidity forming toxic and corrosive vapors (including phosphoric acid, hydrogen chloride, and hydrogen sulfide) posing fire and explosion hazard; A corrosive substance that can cause injury to the skin, eyes, and respiratory tract; Inhalation may cause pulmonary edema; [ICSC] An eye and mucous membrane irritant; [HSDB] Decomposed by water producing phosphoric acid and hydrochloric acid; May also form hydrogen sulfide on reaction with water; Fumes in air; An eye and mucous membrane irritant; Corrosive to tissue; [CAMEO] A corrosive substance that can cause injury to the skin, eyes, and respiratory tract; Inhalation may cause chemical pneumonitis; Can be absorbed through skin; [MSDSonline]

Exposure Assessment
Vapor Pressure

16.35 mm Hg

Lethal Concentration

LC50 (rat) = 20 ppm/4h

Adverse Effects
Toxic Pneumonitis

Yes

Dermatotoxin

Skin Burns

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Health Studies

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