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Common Name
Methyldymron
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中文通用名
甲基杀草隆
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IUPAC
1-methyl-3-(1-methyl-1-phenylethyl)-1-phenylurea
or
3-(α,α-dimethylbenzyl)-1-methyl-1-phenylurea
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CAS
N-methyl-N′-(1-methyl-1-phenylethyl)-N-phenylurea
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CAS No.
42609-73-4
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Molecular Formula
C17H20N2O
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Molecular Structure
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Category
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Activity
Herbicide
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Physical Properties
Molecular weight:268.4; Physical form:Colourless, odourless crystals. Density:1.1-1.2; Melting point:72 °C; Partition coefficient(n-octanol and water):logP = 3.01; Solubility:In water 120 mg/l (20 °C). In acetone 913, hexane 8.2, methanol 637 (all in g/l, 20 °C).; Stability:Stable to heat and light.;
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Toxicology
Oral:Acute oral LD50 for male mice 5000, female mice 5269, male rats 5852, female rats 3948 mg/ kg. Percutaneous:Acute percutaneous LD50 for rats >2000 mg/ kg. Inhalation: LC50 >4.85 mg/l. ADI:(JMPR) 1.0 mg/ kg b.w. as bromide ion [1966]; ADI for bromide ion 1.0 mg/ kg b.w. [1988].
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Environmental Profile
Ecotoxicology:
Daphnia: LC50(3 h) for D. pulex >40 ppm.Fish: LC50 (48 h) for carp 14 mg/l.
Environmental fate:
Plant:Rapidly metabolised in plants.
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Transport Information
Signal Word:CAUTION; Hazard Class:III(Slightly hazardous)