Title: Edifenphos
CAS Registry Number: 17109-49-8
CAS Name: Phosphorodithioic acid O-ethyl S,S-diphenyl ester
Additional Names: O-ethyl S,S-diphenyl phosphorodithioate; EDDP; ediphenphos
Manufacturers' Codes: Bayer 78418
Trademarks: Hinosan (Bayer)
Molecular Formula: C14H15O2PS2
Molecular Weight: 310.37
Percent Composition: C 54.18%, H 4.87%, O 10.31%, P 9.98%, S 20.66%
Literature References: Prepn: NL 6611860; G. Schrader et al., US 3499951 (1967, 1970 both to Bayer). Degradn in soil: C. Tomizawa et al., J. Environ. Sci. Health B11, 231 (1976). Metabolism: I. Ueyama et al., Agric. Biol. Chem. 42, 885 (1978). Mechanism of action: O. Kodama et al., ibid. 44, 1015 (1980). Toxicology: T. S. Chen et al., Toxicol. Appl. Pharmacol. 23, 519 (1972).
Properties: Clear yellow to light-brown liquid, bp0.01 154°. d420 1.23; nD22 1.61. Practically insol in water. Sol in acetone, xylene. LD50 in female, male rats (mg/kg): 25.5, 66.5 i.p. (Chen).
Boiling point: bp0.01 154°
Index of refraction: nD22 1.61
Density: d420 1.23
Toxicity data: LD50 in female, male rats (mg/kg): 25.5, 66.5 i.p. (Chen)
Use: Fungicide.

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