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Chemical Identification
Common Name
Tecloftalam
中文通用名
叶枯酞
IUPAC
2′,3,3′,4,5,6-hexachlorophthalanilic acid
or
3,4,5,6-tetrachloro-N-(2,3-dichlorophenyl)phthalamic acid
CAS
2,3,4,5-tetrachloro-6-[[(2,3-dichlorophenyl)amino]carbonyl]benzoic acid
CAS No.
76280-91-6
Molecular Formula
C14H5Cl6NO3
Molecular Structure
Physical Properties
Molecular weight:447.9; Physical form:White powder. Melting point:198-199 °C; Vapour pressure:8.16 × 10-3 mPa(20 °C); Partition coefficient(n-octanol and water):logP = 2.17; Solubility:In water 14 mg/l (26 °C). In acetone 25.6, benzene 0.95, dimethylformamide 162, dioxane 64.8, ethanol 19.2, ethyl acetate 8.7, methanol 5.4, xylene 0.16 (all in g/l).; Stability:Degraded by sunlight or u.v. light. Hydrolysed in strongly acidic media. Stable under alkaline or neutral conditions.;
Toxicology
Oral:Acute oral LD50 for male rats 2340, female rats 2400, male mice 2010, female mice 2220 mg/ kg. Percutaneous:Acute percutaneous LD50 for rats >1500, mice >1000 mg/kg. Inhalation:LC50 (4 h) for rats >1.53 mg/l. ADI:0.07 mg/kg daily (based on 2-generation rat reproduction study).
Environmental Profile
Ecotoxicology:
 Daphnia:LC50 (3 h) 300 mg/l.Fish: LC50(48 h) for carp 30 mg/l. 

Environmental fate: 
Soil:Half-life in soil 4-10 d, undergoing loss of chlorine from the benzoic acid ring.
Transport Information
Signal Word:CAUTION; Hazard Class:III(Slightly hazardous)

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