Structural Formula Vector Image
Title: Thioquinox
CAS Registry Number: 93-75-4
CAS Name: 1,3-Dithiolo[4,5-b]quinoxaline-2-thione
Additional Names: trithiocarbonic acid cyclic 2,3-quinoxalinediyl ester; 2,3-quinoxalinedithiol cyclic trithiocarbonate; trithiocarbonic acid cyclic ester with 2,3-quinoxalinedithiol; 2-thio-1,3-dithiolo[4,5-b]quinoxaline; chinothionat; quinothionate
Trademarks: Eradex (Bayer); Readex
Molecular Formula: C9H4N2S3
Molecular Weight: 236.34
Percent Composition: C 45.74%, H 1.71%, N 11.85%, S 40.70%
Literature References: Prepn starting with 2,3-dimercaptoquinoxaline and thiophosgene: Sasse et al., US 3141886 (1964 to Bayer); DE 1088965 (1960); BE 580478 (1958). Toxicity study: Sasse, Hoefchen-Briefe 13, 197 (1960), C.A. 56, 1801h (1962).
Properties: Brownish to yellow powder, mp 180°. The commercial product begins to melt at 165° but does not decompose until the temp exceeds 200°. Vapor pressure 1 ´ 10-7 mm Hg at 20°. Practically insol in water. Slightly sol in acetone, methanol, anhydr ethanol, petr ether, kerosene. LD50 orally in rats: 3.4 g/kg (Sasse).
Melting point: mp 180°
Toxicity data: LD50 orally in rats: 3.4 g/kg (Sasse)
Use: Acaricide, fungicide.
Status: This monograph has been retired and is no longer subject to revision or update.

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