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Chemical Identification
Common Name
Oxabetrinil
中文通用名
解草腈
IUPAC
(Z)-1,3-dioxolan-2-ylmethoxyimino(phenyl)acetonitrile
CAS
Z)-α-[(1,3-dioxolan-2-yl)methoxyimino]benzeneacetonitrile
CAS No.
94593-79-0
Molecular Formula
C12H12N2O3
Molecular Structure
Physical Properties
Molecular weight:232.2; Physical form:Colourless crystals. Density:1.33 (20℃); Composition:Material comprises (Z)- and (E)- isomers. Melting point:77.7 ℃; Vapour pressure:0.53 mPa (20℃); Henry constant:6.15 × 10-3 Pa m3 mol-1 ( calc.); Partition coefficient(n-octanol and water):logP = 2.76 (rp-tlc); Solubility:In water 20 mg/l (20 ℃). In acetone 250, cyclohexanone 300, toluene 220, methanol 30, hexane 5.6, n-octanol 12, xylene 150, dichloromethane 450 (all in g/ kg, 20℃).; Stability:Stable up to 240 ℃. No significant hydrolysis at pH 5-9 within 30 d.
Toxicology
Oral:Acute oral LD50 for rats >5000 mg/ kg. Percutaneous:Acute percutaneous LD50 for rats >5000 mg/kg. Minimal skin and eye irritation (rabbits). Not a skin sensitiser. Inhalation: LC50 (4 h) for rats >1.45 mg/l air. ADI:0.12 mg/ kg.
Environmental Profile
Ecotoxicology:
Algae: EC50 (96 h) for Selenastrum capricornutum 10.7 mg/l.Bees: LD50 (oral, 24 h) >20 μg/bee; (contact) >1000 ppm.Birds: LD50 for Japanese quail >2500 mg/ kg; (8 d) for bobwhite quail >5000, Pekin ducks >1000 mg/ kg.Daphnia: LC50 (48 h) 8.5 mg/l.Fish: LC50 (96 h) for trout 7.1, bluegill sunfish 12 mg/l.

Environmental fate:
Animals:In rats, following ingestion, oxabetrinil is rapidly and fully excreted, predominantly via urine.Plant:Opening of the dioxolane ring, hydroxylation, glycosylation to water-soluble conjugation products.
Transport Information
Hazard Class:III(Slightly hazardous)

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