Chemical Identification
Common Name
Tiocarbazil
中文通用名
仲草丹
IUPAC
S-benzyl di-sec-butyl(thiocarbamate)
CAS
S-(phenylmethyl) bis(1-methylpropyl)carbamothioate
CAS No.
36756-79-3
Molecular Formula
C16H25NOS
Molecular Structure
Physical Properties
Molecular weight:279.4; Physical form:Colourless liquid, with aromatic odour. Density:1.023 (20 °C); Vapour pressure:93 mPa (50 °C); Partition coefficient(n-octanol and water):logP = 4.4; Solubility:In water 2.5 mg/l (30 °C). Miscible with polar and non-polar organic solvents.; Stability:Stable to hydrolysis at pH 5.6-8.4. Slightly decomposed after 30 days at 40 °C in aqueous ethanol at pH 1.5. Stable to storage for 60 days at 40 °C, and for 100 h in aqueous solution exposed to sunlight.;
Toxicology
Oral:Acute oral LD50 for rats, rabbits, and guinea pigs >10 000 mg tech./kg, for mice 8000 mg/kg. Percutaneous:Acute percutaneous LD50 for rats and rabbits >1200 mg/kg. Inhalation: LC50 for rats >0.18 mg/l air. Phytotoxicity:Non-phytotoxic to rice.
Environmental Profile
Ecotoxicology: 
Bees:Not hazardous for honeybees.Birds:Acute oral LD50 for chickens, pheasants, quail >10 000 mg tech./kg.Fish:LC50 in several fish species ×8 mg/l.Other aquatic spp.: LC50 for the mollusc Australorbis glabratus >60 mg/l. 

Environmental fate: 
Animals:Tiocarbazil, when administered orally at the dose of 1 g/kg, is almost totally eliminated 7 days after treatment, either as such in the faeces or as products deriving from its metabolism, through the urine. In the blood and in the main orSoil:Tiocarbazil is strongly adsorbed by the soil (where it largely localises in the uppermost layer), Kom 1711, and undergoes a rapid degradation due to the attack of soil micro-organisms; 50% of tiocarbazil applied is no longer prPlant:Tiocarbazil undergoes extensive metabolism in rice: 3 compounds have been identified in plants (except caryopsides): N,N-di-sec-butylcarbamoylthiolglycolic acid, N,N-di-sec-butylcarbamoyl benzylsulfoxide,
Transport Information
Signal Word:CAUTION; Hazard Class:III(Slightly hazardous)

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