Title: Ziram
CAS Registry Number: 137-30-4
CAS Name: (T-4)-Bis(dimethylcarbamodithioato-S,S¢)zinc
Additional Names: bis(dimethyldithiocarbamato)zinc; zinc dimethyldithiocarbamate; dimethyldithiocarbamic acid zinc salt; zinc bis(dimethylthiocarbamoyl) disulfide; methyl cymate
Trademarks: Crittam (Caffaro); Mezene (Isagro); Pomarsol Z (Bayer); Thionic (UCB); Triscabol (Elf Atochem)
Molecular Formula: C6H12N2S4Zn
Molecular Weight: 305.84
Percent Composition: C 23.56%, H 3.95%, N 9.16%, S 41.94%, Zn 21.39%
Literature References: Prepd from zinc oxide, dimethylamine, and carbon disulfide: Olin, Deger, US 2492314 (1949 to Sharples Chemicals). Crystal structure: Klug, Acta Crystallogr. 21, 536 (1966). Toxicity study: Hodge et al., J. Pharmacol. Exp. Ther. 118, 174 (1956). Field analysis of residues in air: J. E. Woodrow et al., J. Agric. Food Chem. 43, 1524 (1995). Review and evaluation of toxicity studies: IARC Monographs 53, 423-438 (1991).
Properties: Crystals from hot chloroform + alcohol, mp 250°. Can form a flammable dust. d425 1.66. Practically insol in water. Soly per 100 ml of solvent at 25°: <0.2 g, alcohol; <0.5 g, acetone; <0.5 g, benzene; <0.2 g, carbon tetrachloride, more sol in chloroform; <0.2 g, ether; 0.5 g, naphtha. Sol in dil caustic solns. LD50 orally in rats: 1.4 g/kg (Hodge).
Melting point: mp 250°
Density: d425 1.66
Toxicity data: LD50 orally in rats: 1.4 g/kg (Hodge)
CAUTION: May be irritating to skin and mucous membranes. See: Clinical Toxicology of Commercial Products, R. E. Gosselin et al., Eds. (Williams & Wilkins, Baltimore, 5th ed., 1984) Section II, p. 314.
Use: Rubber vulcanization accelerator; agricultural fungicide. |