Agent Name

Dimethyl phosphorochloridothioate

CAS Number




Major Category

Other Classes


Chlorodimethoxyphosphine sulfide; Dimethoxy thiophosphonyl chloride; Dimethoxythiophosphonyl chloride; Dimethyl chlorothionophosphate; Dimethyl chlorothiophosphate; Dimethyl chlorothiophosphonate; Dimethyl phosphorochlorothioate; Dimethyl phosphorochloridothionate; Dimethyl thionophosphorochloridate; Dimethyl thiophosphorochloridate; Dimethyl thiophosphoryl chloride; Dimethylchlorthiofosfat [Czech]; Methyl PCT; O,O-Dimethyl chlorothionophosphate; O,O-Dimethyl chlorothiophosphate; O,O-Dimethyl phosphorochloridothioate; O,O-Dimethyl phosphorochlorothioate; O,O-Dimethyl phosphorocloridothioate; O,O-Dimethyl phosphorothionochloridate; O,O-Dimethyl thionophosphorochloridate; O,O-Dimethyl thionophosphoryl chloride; O,O-Dimethyl thiophosphoric acid chloride; O,O-Dimethyl thiophosphoryl chloride; O,O-Dimethylester kyseliny chlorthiofosforecne [Czech]; O,O-Dimethylphosphorochloridothioate; O,O-Dimethylthionophosphoryl chloride; Phosphonothioic acid, chloro-, O,O-dimethyl ester; Phosphorochloridothioic acid, O,O-dimethyl ester; [ChemIDplus] DMPCT; [HSDB] UN2267


Organophosphates, Other


Colorless to light amber liquid; [Hawley] Clear light yellow liquid; [MSDSonline]


Used to make insecticides, pesticides, fungicides, oil and gasoline additives, plasticizers, corrosion inhibitors, flame-retardants, and flotation agents; [Hawley]


A strong skin, eye, and mucous membrane irritant; A cholinesterase inhibitor; [Hawley] Occupational exposures have caused superficial corneal burns that fully healed; [HSDB] A highly corrosive cholinesterase inhibitor; [CAMEO] Effects in high-dose animal studies include convulsions and dyspnea; [RTECS] Highly irritating or corrosive to the skin and eyes of rabbits; Developmental inhalative studies with rats at doses ranging from 4.9-150 mg/m3 showed maternal toxicity and reduction in mean fetal weight, but no teratogenic effects; [IUCLID]


Not registered with the EPA as a pesticide for use in the US; [CAMEO]

Exposure Assessment

Acetylcholinesterase activity in red blood cells = 70% of individual's baseline; Butylcholinesterase activity in serum or plasma = 60% of individual's baseline; Sample at end of shift; [TLVs and BEIs]

Vapor Pressure

0.9 mm Hg

Lethal Concentration

LC50 (rat) = 340 mg/m3/4h

Adverse Effects
Other Poison



Skin Burns

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information


Chemical Information

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Related Information in HazMap
Other Information

No other related information on this agent was found.