3640. EPTC

Nomenclature

CAS number: 759-94-4
Dipropylcarbamothioic acid S-ethyl ester; dipropylthiocarbamic acid S-ethyl ester; S-ethyl dipropylthiocarbamate; R-1608; FDA-1541; Eptam (Syngenta).
C9H19NOS; mol wt 189.32.
C 57.10%, H 10.12%, N 7.40%, O 8.45%, S 16.94%.

Description and references

Selective pre-planting herbicide. Prepn: GB 808753; H. Tilles, J. Antognini, US 2913327 (both 1959 to Stauffer). Activity: J. Antognini et al., Proc. Northeast. States Weed Control Conf. 1957, 3. Metabolism: V. Y. Ong, S. C. Fang, Toxicol. Appl. Pharmacol. 17, 418 (1970); J. P. Hubbell, J. E. Casida, J. Agric. Food Chem. 25, 404 (1977).

Chemical structure

Properties

Liquid, bp20 127°. d30 0.9546; nD30 1.4750. Vapor pressure at 35°: 3.4×10-2 mm Hg. Soly in water at 20°: 365 mg/l. Miscible with benzene, alc, toluene, xylene. LD50 orally in rats: 1631 mg/kg (Antognini).

Use

Herbicide.