Agent Name

Chlorothion

CAS Number

500-28-7

Formula

C8-H9-Cl-N-O5-P-S

Major Category

Pesticides

Synonyms

3-Chloro-4-nitrophenyl dimethyl phosphorothioate; BAY 22190; Bayer 22/190; Chloorthion [Dutch]; Chlorthion; Chlorthion methyl; Chlortion [Czech]; Compound 22/190; Dimethyl 3-chloro-4-nitrophenyl thionophosphate; ENT 18,861; Methyl chlorothion; Methylchlorothion; O,O-Dimethyl O-(3-chloro-4-nitrophenyl) phosphorothioate; O,O-Dimethyl O-(3-chloro-4-nitrophenyl) thiophosphate; O,O-Dimethyl O-4-nitro-3-chlorophenyl thiophosphate; O,O-Dimethyl p-nitro-m-chlorophenyl thiophosphate; O,O-Dimethyl-O-(3-chlor-4-nitrophenyl)-monothiophosphat [German]; O,O-Dimethyl-O-(4-nitro-5-chlorphenyl)-thionophosphat [German]; O,O-Dimethyl-O-3-chlor-4-nitrofenylester kyseliny thiofosforecne [Czech]; O,O-Dimethyl-O-3-chlor-4-nitrofenyltiofosfat [Czech]; O-(3-Chloor-4-nitro-fenyl)-O,O-dimethyl-monothiofosfaat [Dutch]; O-(3-Chlor-4-nitro-phenyl)-O,O-dimethyl-monothiophosphat [German]; O-(3-Chloro-4-nitrophenyl) O,O-dimethyl phosphorothioate; O-(3-Cloro-4-nitro-fenil)-O,O-dimetil-monotiofosfato [Italian]; OMS 217; Phenol, 3-chloro-4-nitro-, O-ester with O,O-dimethyl phosphorothioate; Phosphorothioic acid, O-(3-chloro-4-nitrophenyl) O,O-dimethyl ester; Thiophosphate de O,O-dimethyle et de O-3-chloro-4-nitrophenyle [French]; p-Nitro-m-chlorophenyl dimethyl thionophosphate; [ChemIDplus]

Category

Organophosphate Insecticides

Description

Yellow solid; Commercial substance is yellow liquid; [HSDB] Yellow solid; mp = 21 deg C; [MSDSonline]

Sources/Uses

Used as insecticide to control various agricultural and household pests; Also used to protect livestock and as veterinary anthelmintic; [HSDB]

Comments

A cholinesterase inhibitor; [HSDB]

Restricted

No longer registered as a pesticide for use in the US; [HSDB]

Exposure Assessment
BEI

Cholinesterase activity in red cells = 70% of individual's baseline, sample time discretionary; [ACGIH]

Vapor Pressure

4.0E-6 mm Hg

Adverse Effects
Other Poison

Organophosphate

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information

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Chemical Information

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Diseases

Occupational diseases associated with exposure to this agent:

Processes

Industrial Processes with risk of exposure: