Dimethomorph Amides Fungicide

Common name: Dimethomorph

Chemical name:

(E,Z)4-[3-(4-chlorophenyl)-3-(3,4-dimethoxyphenyl)acryloyl] morpholine

Molecular formula: C21H22ClNO4

Structural formula:

Molecular weight: 387.86

CAS No. : 110488-70-5

Product description：

It is a special fungicide of the class of oomycetes. Its function is to destroy the formation of cell wall membrane. It has an effect on all stages of the life history of oomycetes. It is especially sensitive in the formation stage of sporangia stems and oospores, at very low concentrations. Down (<0.25μg/ml) is inhibited. No cross-resistance to phenylamides.

Physical and chemical properties:

Composition (E)- to (Z)- ratio is c. 1:1. Mol. wt. 387.9 M.f. C21H22ClNO4 Form Colourless to off-white powder to crystals. M.p. 125.2-149.2 ºC; (E)- isomer 136.8-138.3 ºC; (Z)- isomer 166.3-168.5 ºC V.p. (E)- isomer 9.7 ´ 10-4 mPa; (Z)- isomer 1.0 ´ 10-3 mPa (both 25 ºC) KOW logP = 2.63 (E)- isomer; 2.73 (Z)- isomer (both 20 ºC) Henry (E)- isomer 5.4 ´ 10-6 Pa m3 mol-1; (Z)- isomer 2.5 ´ 10-5 Pa m3 mol-1 S.g./density Bulk density 1318 kg/m3 (20 ºC) Solubility In water 81.1 (pH 5), 49.2 (pH 7), 41.8 (pH 9) (all in mg/l, 20 °C). In n-heptane 0.12 (E), 0.053 (Z); xylene 22.2 (E), 6.4 (Z); 1,2-dichloroethane 182.5 (E), 92.5 (Z); ethyl acetate 46.6 (E), 9.5 (Z); acetone 105.6 (E), 18 (Z), methanol 33.5 (E), 7.5 (Z) (all in mg/l). In n-hexane 0.11, methanol 39, ethyl acetate 48.3, toluene 49.5, acetone 100, dichloromethane 461 (all for (EZ), in mg/l). Stability Hydrolytically and thermally stable under normal conditions. Stable for >5 years in the dark. The (E)- and (Z)- isomers are interconverted in sunlight. pKa -1.305 (calc.) F.p. Not flammable.

Specifications：50%WP 50%WG

Usage：

1. To control cucumber and bitter melon downy mildew, and cruciferous vegetables downy mildew before or at the beginning of the onset of the disease, the application of 69% gram manganese zinc 1500-1,995 grams (active ingredient 69-92 grams) per hectare, the amount of spray is 900-1200 liters. Spray once every 7-10 days for 3-4 consecutive times. 2. For the control of pepper blight, Portuguese Chemicalbook downy mildew, tobacco black shins and potato late blight, spray before or at the beginning of the onset of the disease with 69% ang mangnomic zinc 1995-2505 grams (active ingredient 92-115 grams) per hectare at a dose of 900-1200 litres and 2250-3000 litres per male grape. Spray once every 7-10 days for 3-4 consecutive times.