Chemical Identification
Common Name
Pyroquilon
中文通用名
咯喹酮
IUPAC
1,2,5,6-tetrahydropyrrolo[3,2,1-ij]quinolin-4-one
CAS
1,2,5,6-tetrahydro-4H-pyrrolo[3,2,1-ij]quinolin-4-one
CAS No.
57369-32-1
Molecular Formula
C11H11NO
Molecular Structure
Category
Activity
Fungicide
Premix
Granules, wettable soluble, wettable powder. 
Premix Parters: 2,4-D dicamba sulfentrazone; propanil; pyrazosulfuron-ethyl;
Physical Properties
Molecular weight:173.2; Physical form:White crystals. Density:1.29 (20 °C); Melting point:112 °C; Vapour pressure:0.16 mPa (20 °C); Henry constant:6.93× 10-6 Pa m3 mol-1 (calc.); Partition coefficient(n-octanol and water):logP = 1.57; Solubility:In water 4 g/l (20 °C). In acetone 125, benzene 200, dichloromethane 580, isopropanol 85, methanol 240 (all in g/l, 20 °C).; Stability:Stable to hydrolysis, and to temperatures up to 320 °C.
Toxicology
Oral:Acute oral LD50 for rats 321, mice 581 mg/ kg. Percutaneous:Acute percutaneous LD50 for rats >3100 mg/kg. Not a skin irritant; minimal eye irritant (rabbits). Not a skin sensitiser (guinea pigs). Inhalation: LC50 (4 h) for rats >5100 mg/m3.
Environmental Profile
Ecotoxicology: 
Algae:No effect on Scenedesmus acutus.Bees:Practically non-toxic to honeybees. LD50 (oral) >20 mg/bee; (contact) >1000µg/bee.Birds: LD50 (8 d) for Japanese quail 794, chickens 431 mg/kg. LC50 (8 d) for Japanese quail >10 000 mg/ kg.Daphnia: LC50 (48 h) 60 mg/l.Fish: LC50 (96 h) for catfish 21, rainbow trout 13, perch 20, guppy 30 mg/l. 

Environmental fate: 
Animals:After oral administration, pyroquilon is rapidly metabolised and eliminated via urine and faeces. Residues in tissues were generally low, and there was no evidence for accumulation or retention of pyroquilon or its metabolites.Soil: DT50 (silty soil) 2 w, (sandy loam) 18 w. Kd 1.3-42µg/g soil, little to moderately mobile. Photolysis in water, DT50 10 d.Plant:Major metabolites in rice grain were 3,4-dihydro-4-hydroxy-2-oxoquinoline-8-acetic acid and two other acetic acid derivatives.
Transport Information
Signal Word:WARNING; Hazard Class:II(Moderately hazardous)

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