Oxabetrinil

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Chemical Identification | General Product Information | Physical & Safety Data

Chemical Identification

Common Name

Oxabetrinil

中文通用名

解草腈

IUPAC

(Z)-1,3-dioxolan-2-ylmethoxyimino(phenyl)acetonitrile

CAS

(αZ)-α-[(1,3-dioxolan-2-yl)methoxyimino]benzeneacetonitrile

CAS No.

94593-79-0

Molecular Formula

C₁₂H₁₂N₂O₃

Molecular Structure

General Product Information

Category

Herbicide Safeners > Herbicide Safeners

Activity

Herbicide safener

Physical & Safety Data

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)