Ethiozin

Title: Ethiozin
CAS Registry Number: 64529-56-2
CAS Name: 4-Amino-6-(1,1-dimethylethyl)-3-(ethylthio)-1,2,4-triazin-5(4H)-one
Additional Names: 3-ethylthio-4-amino-6-tert-butyl-1,2,4-triazine-5-one; ethyl metribuzin
Manufacturers' Codes: SMY-1500; BAY SMY 1500
Trademarks: Tycor (Mobay)
Molecular Formula: C9H16N4OS
Molecular Weight: 228.31
Percent Composition: C 47.35%, H 7.06%, N 24.54%, O 7.01%, S 14.04%
Literature References: Selective pre- and post-emergence herbicide; ethylthio analog of metribuzin. Prepn: BE 697083; K. Westphal et al., US 3671523 (1967, 1972 both to Bayer AG). Improved process: T. Schmidt, DE 3339858; idem, US 4546178 (both 1985 to Bayer AG). Physicochemical properties, toxicity and herbicidal activity: H. Hack et al., Proc. Br. Crop Prot. Conf. - Weeds 1985, 35. Field trials in winter wheat: B. Bolton et al., ibid. 915; R. Ratliff, T. F. Peeper, Weed Technol. 1, 235 (1987).
Properties: Crystalline solid, mp 95°. Soly at 20°: 420 mg/l in water; 2500 mg/l in hexane; >50% in dichloromethane; >25% in toluol; >15% in 2-propanol. Vapor pressure at 20°: 1 ´ 10-3 Pa. LD50 in male, female rats (mg/kg): 2470, 1280 orally (Hack).
Melting point: mp 95°
Toxicity data: LD50 in male, female rats (mg/kg): 2470, 1280 orally (Hack)
Use: Herbicide.
Status: This monograph has been retired and is no longer subject to revision or update.
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