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Chemical Identification
Common Name
Tricyclazole
中文通用名
三环唑
IUPAC
5-methyl-1,2,4-triazolo[3,4-b][1,3]benzothiazole
CAS
5-methyl-1,2,4-triazolo[3,4-b]benzothiazole
CAS No.
41814-78-2
Molecular Formula
C9H7N3S
Molecular Structure
Category
Activity
Fungicide
Premix
Tricyclazole+Thiophanate-methyl
Tricyclazole+Tebuconazole
Tricyclazole+Hexaconazole
Tricyclazole+Fenaminstrobin
Tricyclazole+Azoxystrobin
Thifluzamide+Tricyclazole
Epoxiconazole+Tricyclazole
Physical Properties
Molecular weight:189.2; Physical form:Crystalline solid. Melting point:187-188 °C; Vapour pressure:0.027 mPa (25 °C); Henry constant:3.19 × 10-6 Pa m3 mol-1 ( calc.); Partition coefficient(n-octanol and water):logP = 1.4; Solubility:In water 1.6 g/l (25 °C). In acetone 10.4, methanol 25, xylene 2.1 (all in g/l, 25 °C).; Stability:Stable at 52 °C (highest storage temperature tested). Relatively stable to u.v. light.;
Toxicology
Oral:Acute oral LD50 for rats 314, mice 245, dogs >50 mg/kg. Percutaneous:Acute percutaneous LD50 for rabbits >2000 mg/kg. Slight eye irritant; non-irritating to skin (rabbits). Inhalation: LC50 (1 h) for rats 0.146 mg/l air.
Environmental Profile
Ecotoxicology: 
Birds:Acute oral LD50 for mallard ducks and bobwhite quail >100 mg/kg.Daphnia:LC50 (48 h) >20 mg/l;NOEC (21 d) 0.96 mg/l.Fish: LC50 (96 h) for bluegill sunfish 16.0, rainbow trout 7.3, goldfish fingerlings 13.5 mg/l. 

Environmental fate: 
Animals:Rapid and extensive metabolism.Soil:Kd 4 (loamy sand, pH 6.5, 1.5% o.m.), 45 (loam, pH 5.7, 3.1% o.m.), 21 (clay loam, pH 7.4, 1.9% o.m.), 22 (silty clay loam,
Transport Information
Signal Word:WARNING; Hazard Class:II(Moderately hazardous)

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