Dicloran

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Chemical Identification | General Product Information | Physical & Safety Data

Chemical Identification

Common Name

Dicloran

中文通用名

氯硝胺

IUPAC

2,6-dichloro-4-nitroaniline

CAS

2,6-dichloro-4-nitrobenzenamine

CAS No.

99-30-9

Molecular Formula

C₆H₄Cl₂N₂O₂

Molecular Structure

General Product Information

Category

Fungicides > Aromatic fungicides

Activity

Fungicide

Physical & Safety Data

Physical Properties

Molecular weight:207.0; Physical form:Yellow crystals. Density:0.28 (bulk); Composition:Tech. is 97% pure. Melting point:195 °C; Vapour pressure:0.16 mPa (20 °C); 0.26 mPa (25 °C); Henry constant:8.4×10-3 Pa m3 mol-1 ( calc.); Partition coefficient(n-octanol and water):logP = 2.8 (25 °C); Solubility:In water 6.3 mg/l (20 °C). In acetone 34, dioxane 40, chloroform 12, ethyl acetate 19, benzene 4.6, xylene 3.6, cyclohexane 0.06 (all in g/l, 20 °C).; Stability:Stable to hydrolysis ( pH range 5-9) and oxidation. Stable up to 300 °C; in aqueous solution ( 7.1), 50 41 h (>290 ).

Toxicology

Oral:Acute oral LD₅₀ for rats 4040 mg/kg, mice 1500-2500 mg/kg, guinea pigs 1450 mg/kg. Percutaneous:Acute percutaneous LD₅₀ for mice >5000 mg/kg, rabbits >2000 mg/kg. Inhalation: LC₅₀ (1 h) for rats >21.6 mg/l (for 75% WP). Phytotoxicity:Injury is possible on glasshouse ornamentals and young lettuce plants.

Environmental Profile

Ecotoxicology:
Bees: LD₅₀ (contact) 0.18 mg/bee.Birds:Acute oral LD₅₀ for bobwhite quail 900, mallard ducks >2000 mg/kg. Dietary LC₅₀ (5 d) for mallard ducks 5960, bobwhite quail 1435 mg/kg diet.Daphnia: LC₅₀ (48 h) 2.07 mg/l.Fish: LC₅₀ (96 h) for rainbow trout 1.6, bluegill sunfish 37, goldfish 32 mg/l.Worms: LC₅₀ (14 d) for Eisenia foetida 885 mg/kg.
Environmental fate:
Animals:In rats, following oral administration, dicloran is rapidly metabolised, and excreted in the urine as the sulfate conjugate of 4-amino-3,5-dichlorophenol.Soil:Microbial degradation involves reduction to 4-amino-2,6-dichloroaniline. Soil DT₅₀ 39-78 d (sandy loam, pH 6.3-7.1, o.m. 0.7-3.4%); K_oc 760 (sand, pHPlant:In plants, the principal metabolites are 4-amino-3,5-dichlorophenol, 4-amino-2,6-dichloroacetanilide and 4-amino-2,6-dichloroaniline.
WATER SOLUBILITY: Dispersible

Transport Information

Signal Word:CAUTION; Hazard Class:III (Slightly hazardous)

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Dicloran

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