Sulfotep
Title: Sulfotep
CAS Registry Number: 3689-24-5
CAS Name: Thiodiphosphoric acid tetraethyl ester
Additional Names: thiopyrophosphoric acid tetraethyl ester; sulfotepp; thiotepp; dithio; dithione; dithiophos; TEDP
Manufacturers' Codes: ASP-47; Bayer E 393; ENT-16273
Trademarks: Bladafum (Bayer)
Molecular Formula: C8H20O5P2S2
Molecular Weight: 322.32
Percent Composition: C 29.81%, H 6.25%, O 24.82%, P 19.22%, S 19.90%
Literature References: Prepn: A. D. F. Toy, J. Am. Chem. Soc. 73, 4670 (1951); G. Schrader, R. Mühlmann, DE 848812 (1952 to Bayer), C.A. 47, 5426a (1953); R. Appel, H. Einig, Z. Anorg. Allg. Chem. 414, 236 (1975). Activity: F. F. Smith et al., J. Econ. Entomol. 43, 627 (1950). Toxicity data: B. Holmstedt, Pharmacol. Rev. 11, 567 (1959).
Properties: Pale yellow liquid, bp2 136-139°. Poisonous! Vapor press. at 20°: 1.7 ´ 10-4 mm Hg. d425 1.196. nD25 1.4753. Soly in water: 25 mg/l. Miscible with most organic solvents. Corrosive to iron. LD50 s.c. in mice: 8 mg/kg (Holmstedt).
Boiling point: bp2 136-139°
Index of refraction: nD25 1.4753
Density: d425 1.196
Toxicity data: LD50 s.c. in mice: 8 mg/kg (Holmstedt)
CAUTION: Potential symptoms of overexposure are eye pain, blurred vision, lacrimation and rhinorrhea; headache; cyanosis; anorexia, nausea, vomiting and diarrhea; local sweating, weakness, twitching, paralysis, Cheyne-Stokes respiration, convulsions, low blood pressure and cardiac irregularities; skin and eye irritation. See NIOSH Pocket Guide to Chemical Hazards (DHHS/NIOSH 97-140, 1997) p 294.
Use: Insecticide; miticide.

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