Agent Name

Malaoxon

CAS Number

1634-78-2

Formula

C10-H19-O7-P-S

Major Category

Pesticides

Synonyms

Carbethoxy malaoxon; Diethyl mercaptosuccinate S-ester with O,O-dimethyl phosphorothioate; Liromat; Malaoxone; Malathion-O-analog; Maloxon; O,O-Dimethyl S-(1,2-dicarbethoxy)ethyl phosphorothioate; O,O-Dimethyl S-1,2-bis(ethoxycarbonyl)ethyl phosphorothioate; O,O-Dimethyl-S-(1,2-dicarbethoxy)ethyl phosphorothioate; O,O-Dimethyl-S-1,2-bis(ethoxycarbonyl)ethyl phosphorothioate; Oxycarbophos; Phosphorothioic acid, O,O-dimethyl ester, S-ester with 1,2-bis(ethoxycarbonyl)ethanethiol; S-(1,2-Diethoxycarbonyl)ethyl O,O-dimethyl phosphorothioate; Succinic acid, mercapto-, diethyl ester, S-ester with O,O-dimethylphosphorothioate; [ChemIDplus]

Category

Organophosphate Insecticides

Description

Colorless viscous liquid with a mild unpleasant odor; mp < 20 deg C; [CAMEO] Slightly yellow liquid; [MSDSonline]

Sources/Uses

A biological, chemical, or photolytic modification of Malathion (insecticide); An impurity and main oxidation product of Malathion; Not commercially produced in the US; [HSDB]

Comments

A cholinesterase inhibitor (1,000 times more active than malathion); May have detrimental effects on immune and hematopoietic systems; No evidence of carcinogenicity in feeding studies with rodents; [HSDB] See "Malathion."

Exposure Assessment
BEI

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

Vapor Pressure

9.8E-6 mm Hg

Adverse Effects
Other Poison

Organophosphate

Links to Other NLM Databases
Health Studies

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Chemical Information

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Diseases

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Processes

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