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Chemical Identification
Common Name
Propoxycarbazone
中文通用名
丙苯磺隆
IUPAC
methyl 2-[(4,5-dihydro-4-methyl-5-oxo-3-propoxy-1H-1,2,4-triazole-1-carboxamido)sulfonyl]benzoate
CAS
methyl 2-[[[(4,5-dihydro-4-methyl-5-oxo-3-propoxy-1H-1,2,4-triazol-1-yl)carbonyl]amino]sulfonyl]benzoate
CAS No.
145026-81-9,181274-15-7
Molecular Formula
C15H18N4O7S
Molecular Structure
Physical Properties
Molecular weight:420.4; Physical form:Colourless, crystalline powder. Density:1.42 (20 °C); Melting point:230-240 °C ( decomp.); Vapour pressure:<1 × 10-5 mPa (20 °C); Henry constant:<1 × 10-10 Pa m3 mol-1; Partition coefficient(n-octanol and water):logP = -0.30 ( pH 4), -1.55 ( pH 7), -1.59 ( pH 9) (all 20 °C); pKa:2.1 (N-acid); Solubility:In water 2.9 ( pH 4), 42.0 ( pH 7), 42.0 ( pH 9) (all in g/l, 20 °C).; Stability:Stable to hydrolysis at pH 4-9 (25 °C).
Toxicology
Oral:Acute oral LD50 for rats >5000 mg/ kg. Percutaneous:Acute percutaneous LD50 for rats >5000 mg/kg. Non-irritating to skin and eyes (rabbits); not a skin sensitiser (guinea pigs). Inhalation: LC50 for rats >5030 mg/m3 air.
Environmental Profile
Ecotoxicology:
 Algae: EC50 for green algae 1.57 mg/l.Bees: LD50 (oral) >319µg/bee; (contact) >200µg/bee.Birds:Acute oral LD50 for bobwhite quail >2000 mg/kg. Dietary LC50 for bobwhite quail >5000 mg/ kg diet.Daphnia: EC50 (48 h) >107 mg/l.Fish: LC50 (96 h) for bluegill sunfish >94.7, rainbow trout >77.6 mg/l.Worms: LC50 for earthworms >1000 mg/ kg soil.Other aquatic spp.: ErC50 for Lemna gibba 0.0128 mg/l. 

Environmental fate: 
Animals:Rapid and nearly complete (>88 %) excretion of the administered dose within 48 h, primarily via faeces; 75-89 % unchanged parent compound in urine and faeces. On the basis of metabolism studies in lactating goats, parent compound alone should be regarded Soil:Soil DT50 c. 36 d. Aqueous photolysis DT50 (25 °C) c. 30 d. Field dissipation DT50 c. 9 d.Plant:Based on the results of the metabolism studies in wheat, the unchanged parent compound and its 2-hydroxypropoxy metabolite should be regarded as the relevant residues for plants.
Transport Information
Hazard Class:O (Obsolete as pesticide, not classified)

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