Clofentezine
Title: Clofentezine
CAS Registry Number: 74115-24-5
CAS Name: 3,6-Bis(2-chlorophenyl)-1,2,4,5-tetrazine
Additional Names: bisclofentezin
Manufacturers' Codes: NC-21314
Trademarks: Apollo (FBC)
Molecular Formula: C14H8Cl2N4
Molecular Weight: 303.15
Percent Composition: C 55.47%, H 2.66%, Cl 23.39%, N 18.48%
Literature References: Contact acaricide active against eggs and early motile stages of phytophagous mites. Prepn: J. H. Parsons, EP 5912; idem, US 4237127 (1979, 1980 both to Fisons). Physical properties, toxicity and bioactivity: K. M. G. Bryan et al., Proc. Br. Crop Prot. Conf. - Pests Dis. 1981, 67. Field trial on apple trees: A. J. Read, Proc. 36th N.Z. Weed Pest Control Conf., 261 (1983). Review: F. Rauch, Def. Veg. 39, 11-17 (1985).
Properties: Magenta solid. Crystals from ethyl acetate, mp 179-182°. Soly: 50 g/l in chloroform; 2.5 g/l in benzene; <1 g/l in hexane; <1 mg/l in water. LD50 in rats, mice (mg/kg): >3200 orally; LC50 (96 hr) in rainbow trout: 100 mg/l (Bryan).
Melting point: mp 179-182°
Toxicity data: LD50 in rats, mice (mg/kg): >3200 orally; LC50 (96 hr) in rainbow trout: 100 mg/l (Bryan)
Use: Pesticide.

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