Agent Name

Thionazin

CAS Number

297-97-2

Formula

C8-H13-N2-O3-P-S

Major Category

Pesticides

Synonyms

AC 18133; ACC 18133; American Cyanamid 18133; CL 18133; Cynem; Cynophos; Diethyl O-2-pyrazinyl phosphorothionate; EN 18133; ENT 25,580; Ethyl pyrazinyl phosphorothioate; Experimental nematocide 18,133; Nemafos; Nemafos 10 G; Nemaphos; Nematocide GR; O,O-Diaethyl-O-(2-pyrazinyl)-thionophosphat [German]; O,O-Diaethyl-O-(pyrazin-2-yl)-monothiophosphat [German]; O,O-Diethyl O,2-pyrazinyl phosphorothioate; O,O-Diethyl O-2-pyrazinyl phosphorothionate; O,O-Diethyl O-pyrazinyl phosphorothioate; O,O-Diethyl O-pyrazinyl thiophosphate; Phosphorothioic acid, O,O-diethyl O-2-pyrazinyl ester; Phosphorothioic acid, O,O-diethyl O-pyrazinyl ester; Pyrazinol, O-ester with O,O-diethyl phosphorothioate; Thionazin [BSI]; Thionazine; Zinofos; Zinophos; Zinophos 10-G granular; Zinophos 4-E emulsifiable concentrate; Zinphos Insecticide, Nematicide; Zynophos; [ChemIDplus]

Category

Organophosphate Insecticides

Description

Nearly colorless liquid when pure; Technical product: Light brown to tan liquid; [HSDB] Clear very deep brown liquid; [MSDSonline]

Sources/Uses

Used as soil insecticide and nematocide to protect vegetables, corn, and other crops; No longer commercially produced in the US; [HSDB] Used in insecticides, fungicides, and nematocides; [CAMEO]

Comments

A cholinesterase inhibitor; [CAMEO]

Restricted

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

Exposure Assessment
BEI

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

Vapor Pressure

0.003 mm Hg

Adverse Effects
Other Poison

Organophosphate

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