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Chemical Identification
Common Name
Daimuron
中文通用名
杀草隆
IUPAC
1-(1-methyl-1-phenylethyl)-3-p-tolylurea
or
1-(α,α-dimethylbenzyl)-3-p-tolylurea
CAS
N-(4-methylphenyl)-N′-(1-methyl-1-phenylethyl)urea
CAS No.
42609-52-9
Molecular Formula
C17H20N2O
Molecular Structure
Category
Activity
Herbicide
Premix
Bensulfuron-methyl+daimuron+mefenacet
Granule, wettable powder. Premix Parters: boscalid; carbendazim; fenpropimorph; fenpropimorph kresoxim-methyl; fludioxonil; kresoxim-methyl; pyraclostrobin; thiophanate-methyl; tridemorph.
Physical Properties
Molecular weight:268.4; Physical form:Colourless, odourless needle crystals. Density:1.108 (20 °C); Melting point:203 °C; Vapour pressure:4.53×10-4 mPa (25 °C); Partition coefficient(n-octanol and water):logP = 2.7; Solubility:In water 1.2 mg/l (20 °C). In acetone 16, methanol 10, benzene 0.5, hexane 0.03 (all in g/l, 20 °C).; Stability:Stable to heat and light. Stable between pH 4 and pH 9. Soluble in alcohols, ether, ketones.
Toxicology
Oral:Acute oral LD50 for rats and mice >5000 mg/ kg. Percutaneous:Acute percutaneous LD50 for rats >2000 mg/kg. Not a skin irritant. Inhalation: LC50 (4 h) for rats 3250 mg/m3. Phytotoxicity:Non-phytotoxic to rice.
Environmental Profile
Ecotoxicology: 
Birds:Acute oral LD50 for bobwhite quail >2000 mg/kg. LC50 (5 d) for bobwhite quail >5000 ppm.Daphnia: LC50 (3 h) for D. pulex >40 ppm.Fish: LC50 (48 h) for carp >40 ppm. 
Environmental fate: 
Soil: DT50 in paddy soil c. 50 d.
WATER SOLUBILITY: 1.2 ppm at 20°C
Transport Information
Signal Word:CAUTION; Hazard Class:III (Slightly hazardous)

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