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Chemical Identification
Common Name
Pyrazolynate
中文通用名
吡唑特
IUPAC
4-(2,4-dichlorobenzoyl)-1,3-dimethylpyrazol-5-yl toluene-4-sulfonate
CAS
(2,4-dichlorophenyl)[1,3-dimethyl-5-[[(4-methylphenyl)sulfonyl]oxy]-1H-pyrazol-4-yl]methanone
CAS No.
58011-68-0
Molecular Formula
C19H16Cl2N2O4S
Molecular Structure
Category
Activity
Herbicide
Premix
Premix Parters: dimethametryn esprocarb pretilachlor; esprocarb; mefenacet; molinate; pretilachlor; propanil; quinclorac;
Physical Properties
Molecular weight:439.3; Physical form:Colourless, rod-shaped crystals. Density:1.47 (20 °C); Melting point:117.5-118.5 °C; Vapour pressure:<1.3 × 10-2 mPa (20 °C); Partition coefficient(n-octanol and water):logP = 2.58 (25 °C); Solubility:In water 0.056 /l (25 °C). In ethanol 1.4, ethyl acetate 11.8, 1,4-dioxane 25.6, hexane 0.06 (all in g/l).; Stability:Aqueous solutions hydrolyse readily.
Toxicology
Oral:Acute oral LD50 for male rats 9550, female rats 10 233, male mice 10 070, female mice 11 092 mg/ kg. Percutaneous:Acute percutaneous LD50 for rats >5000 mg/kg. Non-irritating to skin. Inhalation: LC50 (4 h) for rats 2.5 mg/l.
Environmental Profile
Ecotoxicology: 
Fish: LC50 (48 h) for carp 92 mg/l. 

Environmental fate: 
Soil:Soil DT50 8-10 d.WATER SOLUBILITY: 0.056 mg/l at 25° C
Transport Information
Signal Word:CAUTION; Hazard Class:III(Slightly hazardous)

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