Fenitrothion
Structural Formula Vector Image
Title: Fenitrothion
CAS Registry Number: 122-14-5
CAS Name: Phosphorothioic acid O,O-dimethyl O-(3-methyl-4-nitrophenyl) ester
Additional Names: O,O-dimethyl O-4-nitro-m-tolyl phosphorothioate; O,O-dimethyl O-(3-methyl-4-nitrophenyl) phosphorothioate; O,O-dimethyl O-4-nitro-m-tolyl thiophosphate; MEP; metathion
Manufacturers' Codes: Bayer 41831; Bayer S 5660; ENT-25715; OMS-45; AC-47300
Trademarks: Accothion; Cyten; Cyfen; Folithion; Sumithion (Sumitomo)
Molecular Formula: C9H12NO5PS
Molecular Weight: 277.23
Percent Composition: C 38.99%, H 4.36%, N 5.05%, O 28.86%, P 11.17%, S 11.57%
Literature References: Prepn: BE 594669 (1960 to Sumitomo); BE 596091 (1960 to Bayer). Activity: Y. Nishizawa et al., Agric. Biol. Chem. 25, 605 (1961). Toxicity study: G. Schrader, Angew. Chem. 73, 331 (1961).
Properties: Yellow oil. bp0.05 118°. nD25 1.5528. d425 1.3227. Vapor press at 20°: 6´10-6 mm Hg. uv max: 269.5 nm (e 6756). Practically insol in water. Low soly in aliphatic hydrocarbons; sol in most organic solvents. LD50 orally in rats: 250 mg/kg (Schrader).
Boiling point: bp0.05 118°
Index of refraction: nD25 1.5528
Absorption maximum: uv max: 269.5 nm (e 6756)
Density: d425 1.3227
Toxicity data: LD50 orally in rats: 250 mg/kg (Schrader)
CAUTION: Cholinesterase inhibitor.
Use: Insecticide.

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