Agent Name

Pirimiphos-ethyl

CAS Number

23505-41-1

Formula

C13-H24-N3-O3-P-S

Major Category

Pesticides

Synonyms

2-Diethylamino-6-methyl-4-pyrimidinyl diethyl phosphorothioate; 2-Diethylamino-6-methylpyrimidin-4-yl diethyl phosphorothionate; 2-Diethylamino-6-methylpyrimidin-4-yl diethylphosphorothionate; Ethyl pirimiphos; Fernex; O,O-Diethyl O-(2-(diethylamino)-6-methyl-4-pyrimidinyl) phosphorothioate; O,O-Diethyl O-(2-diethylamino-6-methyl-4-pyrimidinyl)phosphorothioate; O-(2-(Diethylamino)-6-methyl-4-pyrimidinyl) O,O-diethyl phosphorothioate; O-(2-(Diethylamino)-6-methyl-4-pyrimidinyl)O,O-diethyl phosphorothioate; O-(2-(Diethylamino)-6-methyl-4-pyrimidinyl)phosphorothioic acid O,O-diethyl ester; PP211; Phosphorothioic acid, O-(2-(diethylamino)-6-methyl-4-pyrimidinyl) O,O-diethyl ester; Pirimifosethyl; Pirimiphos ethyl; Pirimifos-ethyl; Primicid; Primotec; Pyrimiphos-ethyl (ISO-French); R 42211; Solgard; [ChemIDplus] UN3018

Category

Organophosphate Insecticides

Description

Straw colored liquid; [Merck Index] Technical product is clear red-brown liquid; mp 15-18 deg C; [HSDB] Yellow liquid; mp = 10-15 deg C; [MSDSonline]

Sources/Uses

Used as broad spectrum contact and fumigant insecticide and veterinary ectoparasiticide; [Merck Index] Used for fruits, ornamentals, turf, vegetables, and other crops; Also used in combination with fungicides for seed treatment; [HSDB]

Comments

A cholinesterase inhibitor; Can be absorbed through skin; [CAMEO] No effects observed besides inhibition of cholinesterase in 90 day animal feeding studies; No skin irritation or sensitization observed in rabbits; [HSDB]

Restricted

Cancelled--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

0.00029 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

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Chemical Information

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Related Information in HazMap
Diseases

Occupational diseases associated with exposure to this agent:

Processes

Industrial Processes with risk of exposure: