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Chemical Identification
Common Name
Thiobencarb
中文通用名
禾草丹
IUPAC
S-4-chlorobenzyl diethylthiocarbamate; S-4-chlorobenzyl diethyl(thiocarbamate)
CAS
S-[(4-chlorophenyl)methyl] diethylcarbamothioate
CAS No.
28249-77-6
Molecular Formula
C12H16ClNOS
Molecular Structure
Category
Activity
Herbicide
Premix
Bensulfuron-methyl+mefenacet+thiobencarb
Bensulfuron-methyl+thiobencarb
Propanil+Thiobencarb
Thiobencarb+Isoproturon
Emulsifiable concentrate, granule. Premix Parters: captan metalaxyl trifloxystrobin; chloroneb; chlorothalonil; epoxiconazole; etridiazole; imidacloprid mancozeb; iprodione; mancozeb; maneb; thiram; vinclozolin;
Physical Properties
Molecular weight:257.8; Physical form:Pale yellow to brownish-yellow liquid. Density:1.145-1.180 (20 °C); Composition:Tech. is c. 93% pure. Melting point:3.3 °C; Vapour pressure:2.93 (23 °C); Partition coefficient(n-octanol and water):logP = 3.42; Solubility:In water 30 /l (20 °C). Readily soluble in acetone, ethanol, xylene, methanol, benzene, n-hexane, and acetonitrile.; Stability:Stable in water at 5-9 for 30 days (21 °C). Stable to light and heat.;
Toxicology
Oral:Acute oral 50 for male rats 1033, female rats 1130, male mice 1102, female mice 1402 /. Percutaneous:Acute percutaneous 50 for rabbits and rats >2000 /kg. Irritating to skin and eyes. Inhalation:50 (1 h) for rats 43 /l. Phytotoxicity:Non-phytotoxic to rice.
Environmental Profile
Ecotoxicology: 
Algae:50 (120 h) for Anabaena flos-aquae >3.1, Navicula pelliculosa 0.38, Selenastrum capricornutum 0.017, Skeletonema costatum 0.073 /l.Bees:50 (oral) >100 mg/bee.Birds:Acute oral 50 for hens 2629, bobwhite quail >7800, mallard ducks >10 000 /kg. Dietary 50 (8 d) for bobwhite quail and mallard ducks >5000 /50 (48 h) 0.1 /l.Fish:50 (48 h) for carp 3.6, bluegill sunfish 2.4 /l.Other aquatic spp.:50 (14 d) for Lemna gibba 0.99 /l. 

Environmental fate: 
Animals:Thiobencarb was metabolised principally by S-oxygenation to the corresponding sulfoxide by liver microsomes from the striped bass (J. R. Cashman , Chem. Res. Toxicol., 1990, 3, 433).Soil:Rapidly adsorbed by soil, and not readily leached. Degradation is primarily by microbial breakdown, with little loss from volatilisation and photodegradation. Half-life in soil varies from 2-3 w under aerobic conditions to 6-8 under an
Transport Information
Hazard Class:II(Moderately hazardous)

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Thiobencarb

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