Dichlorprop-P

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Chemical Identification | General Product Information | Physical & Safety Data

Chemical Identification

Common Name

Dichlorprop-P

中文通用名

精2,4-滴丙酸

IUPAC

(R)-2-(2,4-dichlorophenoxy)propionic acid

CAS

(2R)-2-(2,4-dichlorophenoxy)propanoic acid

CAS No.

15165-67-0

Molecular Formula

C₉H₈Cl₂O₃

Molecular Structure

General Product Information

Category

Herbicides > Phenoxy herbicides

Activity

Herbicide

Premix

MCPA+dichlorprop-P+mecoprop-P
Dichlorprop-P-2-ethylhexyl+2,4-d 2-ethylhexyl ester
Aqueous solution (600 g/l). Premix Parters: fenoxaprop-P-ethyl.

Physical & Safety Data

Physical Properties

Molecular weight:235.1. Physical form:Colourless crystals, with a weak intrinsic odour. Density:c. 1.47 (20 °C; tech.); Melting point:121-123 °C; ( tech., 116-120 °C); Vapour pressure:0.062 mPa (20 °C); Henry constant:2.471×10-5 Pa m3 mol-1 ( calc.); Partition coefficient(n-octanol and water):logP = -0.25 ( pH 7, 25 °C); pKa:3.67 (20 °C); Solubility:In water 0.59 g/l ( pH 7, 20 °C). In acetone, ethanol >1000, ethyl acetate 560, toluene 46 (all in g/ kg, 20 °C). Stability:Stable to heat and light. Bulk density ca. 600-700 g/l. Solubility in ether ca. 70 g/100 g; acetone >100 g/100 g; ethanol >100 g/100 g.

Toxicology

Oral:Acute oral LD₅₀ for rats 825-1470 mg/ kg. Percutaneous:Acute percutaneous LD₅₀ for rats >4000 mg/ kg. Inhalation: LC₅₀ (4 h) for rats >7.4 mg/l air.

Environmental Profile

Ecotoxicology:
Algae: EC₅₀ (72 h) for Pseudokirchneriella subcapitata 676 mg/l.Bees:Non-toxic to honeybees; LD₅₀ (48 h) >25 µg/bee (tested as dimethylammonium salt).Birds:Acute oral LD₅₀ for quail 250-500 mg/kg.Daphnia: EC₅₀ (48 h) >100 mg/l.Fish:50 (96 h) for trout 100-220 mg/l.Worms: LC₅₀ (14 d) for Eisenia foetida 994 mg/kg soil.
WATER SOLUBILITY: Tech 600 mg/l.

Transport Information

Signal Word:WARNING; Hazard Class:II (Moderately hazardous)