Produit Nom:Propanil 35%EC

Article No.: 709-98-8

Description: 

Propanil

Herbicide

HRAC  C2 WSSA  7; anilide

NOMENCLATURE

Common name propanil (BSI, E-ISO, (m) F-ISO, WSSA); DCPA (JMAF); no name (Germany)

IUPAC name 3',4'-dichloropropionanilide 

Chemical Abstracts name N-(3,4-dichlorophenyl)propanamide 

Other names 3,4-DCPA 

CAS RN [709-98-8]   

PHYSICAL CHEMISTRY

Mol. wt. 218.1 

M.f. C9H9Cl2NO 

Form Colourless, odourless crystals; (tech., brown crystals). 

M.p. 91.5 °C 

V.p. 0.02 mPa (20 ºC); 0.05 mPa (25 ºC) 

KOW logP = 3.3 (20 °C) 

S.g./density 1.41 g/cm3 (22 ºC) 

Solubility In water 130 mg/l (20 ºC). In isopropanol, dichloromethane >200, toluene 50-100, hexane <1 (all in g/l, 20 ºC). In benzene 7 ´ 104, acetone 1.7 ´ 106, ethanol 1.1 ´ 106 (all in ppm, 25 ºC). 

Stability Hydrolysed in strongly acidic and alkaline media to 3,4-dichloroaniline and propionic acid; stable at normal pH range: DT50 (22 ºC) >>1 y (pH 4, 7, 9). Rapidly degraded in water by sunlight; photolysis DT50 12-13 h. 

APPLICATIONS

Biochemistry Photosynthetic electron transport inhibitor at the photosystem II receptor site.  Mode of action Selective contact herbicide with a short duration of activity. 

Uses Contact herbicide used post-emergence in rice, at 2.5-5.0 kg/ha, to control broad-leaved and grass weeds, including Amaranthus retroflexus,Digitaria spp., Echinochloa spp., Panicum spp., and Setaria spp. Also used, in mixture with MCPA, in wheat. A mixture with carbaryl is used in citrus crops grown in sod culture.