Dazomet
Title: Dazomet
CAS Registry Number: 533-74-4
CAS Name: Tetrahydro-3,5-dimethyl-2H-1,3,5-thiadiazine-2-thione
Additional Names: 2-thio-3,5-dimethyltetrahydro-1,3,5-thiadiazine; 3,5-dimethyl-2-thionotetrahydro-1,3,5-thiadiazine; dimethylformocarbothialdine; DMTT
Manufacturers' Codes: UCC 974
Trademarks: Crag 974; Mylone
Molecular Formula: C5H10N2S2
Molecular Weight: 162.28
Percent Composition: C 37.01%, H 6.21%, N 17.26%, S 39.52%
Literature References: Prepd by the action of carbon disulfide on trimethyltrimethylenetriimine: Delépine, Bull. Soc. Chim. 15, 891 (1897); from formaldehyde and methylammonium methyldithiocarbamate: Bodendorf, J. Prakt. Chem. 126, 233 (1930); Ainley et al., J. Chem. Soc. 1944, 147. Prepd commercially by the reaction of carbon disulfide, methylamine and caustic soda: Chem. Week 79, no. 18, 82-83 (1956). Toxicology study: H. F. Smyth, Jr. et al., Toxicol. Appl. Pharmacol. 9, 521 (1966).
Properties: Needles from benzene, mp 106-107°. Soluble in alc with decompn. Dec by water, dil acids. uv max (cyclohexane): 242, 289 nm (e 7150, 9900). LD50 in rats, mice, guinea pigs, rabbits (g/kg): 0.32-0.62, 0.18, 0.16, 0.12 orally; in rats, rabbits, dogs (g/kg): 0.087, 0.127, 0.047-0.063 i.p.; in rabbits (g/kg): 7.1 dermally (Smyth).
Melting point: mp 106-107°
Absorption maximum: uv max (cyclohexane): 242, 289 nm (e 7150, 9900)
Toxicity data: LD50 in rats, mice, guinea pigs, rabbits (g/kg): 0.32-0.62, 0.18, 0.16, 0.12 orally; in rats, rabbits, dogs (g/kg): 0.087, 0.127, 0.047-0.063 i.p.; in rabbits (g/kg): 7.1 dermally (Smyth)
Use: Soil fungicide, nematocide, weed killer; slimicide in paper making.

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