propyzamide

炔苯酰草胺

3,5-dichloro-N-(1,1-dimethylprop-2-ynyl)benzamide

3,5-dichloro-N-(1,1-dimethyl-2-propynyl)benzamide

23950-58-5

C₁₂H₁₁Cl₂NO

Absorbed through the roots, with translocation to leaves and flowers. Uses Control of Botrytis, Sclerotinia, Monilia, and Helminthosporium spp. on fruit (including top fruit, strawberries and raspberries), vines, vegetables (including tomatoes, peas and beans), ornamentals, cereals, sunflowers, oilseed rape, soya beans, peanuts, tobacco, etc. Usually applied at 0.5-1.0 kg a.i./ha. Phytotoxicity Non-phytotoxic when used as directed. Not to be applied to cyclamen after the bud sprouting stage.

fruit (including top fruit, strawberries and raspberries), vines, vegetables (including tomatoes, peas and beans), ornamentals, cereals, sunflowers, oilseed rape, soya beans, peanuts, tobacco, etc.

Control of Botrytis, Sclerotinia, Monilia, and Helminthosporium spp.

DP = Dustable powder
HN = Hot fogging conecntrate
SP = Soluble powder
SC = Suspension concentrate (=flowable concentrate)
TC = TC
WG = Water dispersible granules

Incompatible with alkaline materials.

Molecular weight:256.1; Physical form:Colourless, odourless powder. Melting point:155-156 °C; Vapour pressure:0.058 mPa (25 °C); Henry constant:9.90 × 10-4 Pa m3 mol-1 ( calc.); Partition coefficient(n-octanol and water):logP = c. 3.1-3.2; Solubility:In water 15 mg/l (25 °C). In methanol, isopropanol 150, cyclohexanone, methyl ethyl ketone 200, dimethyl sulfoxide 330 (all in g/l). Moderately soluble in benzene, xylene, carbon tetrachloride. Slightly soluble in petroleum ether.; Stability:Decomposes above melting point. Degraded photolytically on soil thin films, DT50 13-57 d in artificial sunlight. In solution for 28 d ( pH 5-9, 20 °C) <10% loss.

Oral:Acute oral LD₅₀ for male rats 8350, female rats 5620, dogs >10 000 mg/ kg. Percutaneous:Acute percutaneous LD₅₀ for rabbits >3160 mg/kg. Slightly irritating to eyes and skin. Inhalation: LC₅₀ for rats >5.0 mg/l. Phytotoxicity:Certain varieties of lettuce may be injured at higher dose rates. ADI:( JMPR) 0.02 mg/ kg b.w. [1989].

Ecotoxicology:
 Bees:Not hazardous to bees; LD₅₀ >100µg a.i./bee.Birds:Acute oral LD₅₀ for Japanese quail 8770, mallard ducks >14 mg/kg. Dietary LC₅₀ (8 d) for bobwhite quail and mallard ducks >10 000 ppm.Daphnia: LC₅₀ (48 h) >5.6 mg a.i./lFish: LC₅₀ (96 h) for rainbow trout >4.7, carp >5.1 mg a.i./l.Worms: LC₅₀ for earthworms >346 ppm. 

Environmental fate: 
Animals:For metabolism in animals and plants, see R. Y. Yih et al., J. Agric. Food Chem., 1971, 19, 314-324; J. D. Fisher, ibid., 1974, 22, 606-608; J. M. Cantier et al.Soil: DT₅₀ in soil (25 °C) c. 30 d. For further metabolism in soil, see refs. given under Animals. Duration of residual activity in soil, following an application rate of 1-4 kg/8 ha, is c.

Hazard Class:III(Slightly hazardous)