Agent Name

Dichlofenthion

CAS Number

97-17-6

Formula

C10-H13-Cl2-O3-P-S

Major Category

Pesticides

Synonyms

2,4-Dichloro-phenyl diethyl phosphorothionate; Dichlofenthion [ANSI]; Diethyl 2,4-dichlorophenyl phosphorothionate; ECP; ECP (pesticide); ENT 17470; Hexanema; Mobilawn; Nemacide; Nemacide VC-13; O,O-Diaethyl-O-2,4-dichlor-phenyl-monothiophosphat [German]; O,O-Diaethyl-O-2,4-dichlorphenyl-thionophosphat [German]; O,O-Diethyl O-(2,4-dichlorophenyl) phosphorothioate; O,O-Diethyl O-2,4-dichlorophenyl thiophosphate; O,O-Diethyl-O-(2,4-dichloor-fenyl)-monothiofosfaat [Dutch]; O,O-Dietil-O-(2,4-dicloro-fenil)-monotiofosfato [Italian]; O-2,4-Dichlorophenyl O,O-diethyl phosphorothioate; Phenol, 2,4-dichloro-, O-ester with O,O-diethyl phosphorothioate; Phosphorothioic acid, O-(2,4-dichlorophenyl) O,O-diethyl ester (8CI)(9CI); Thiophosphate de O-2,4-dichlorophenyle et de O,O-diethyle [French]; Tri-VC 13; V-C 13; V-C-13; VC 13; VC13 Nemacide; [ChemIDplus] UN3018

Category

Organophosphate Insecticides

Description

Colorless liquid; [Hawley]

Sources/Uses

Used as pesticide (may be restricted); [Hawley] Used as nematocide and insecticide; [Merck Index]

Comments

A cholinesterase inhibitor; [Merck Index] No significant decrease in cholinesterase activity or toxic symptoms were observed in 90 day feeding study with dogs at 0.75 mg/kg bw; [HSDB] The average of two baseline respective cholinesterase activity determinations three days apart, with no exposures to enzyme inhibiting pesticides for at least 30 days, is recommended for each worker prior to exposure to cholinesterase inhibitors because of large inter-individual differences in published baseline values. To be established at least once a year. Removal from workplace exposures is recommended until the cholinesterase activity returns to within 20% of baseline. [TLVs and BEIs]

Exposure Assessment
BEI

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

0.00056 mm Hg

Explanatory Notes

The Guide in the Emergency Response Guidebook is for "Organophosphorus pesticide, liquid, toxic."

Adverse Effects
Other Poison

Organophosphate

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information

Search TOXNET

Chemical Information

Search ChemIDplus

Related Information in HazMap
Diseases

Occupational diseases associated with exposure to this agent:

Processes

Industrial Processes with risk of exposure: