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Carbendazim 98%TC,25%WP,50%WP 500g/L SC

1.  Common name: Carbendazim

2.  Chemical names: methyl 1H-benzimidazol-2-ylcarbamate

3.  Chemical class: benzimidazole fungicides and benzimidazolylcarbamate fungicides

4.  Type of formulation: SC (suspension concentrate)

5.  Active ingredient and its content: carbendazim>500g/Lit

6.  Structural formula:



7.  Chemical properties:

Molecular weight: 191.2 

Melting point: 302-307 oC (decomp.) 

Vapor pressure: 0.09 mPa (20 oC); 0.15 mPa (25 oC); 1.3 mPa (50 oC); separate study gives <0.0001 mPa (20 oC) 

KOW logP = 1.38 (pH 5), 1.51 (pH 7), 1.49 (pH 9) 

Henry 3.6 x 10-3 Pa m3 mol-1 (calc.) 

S.g./density 1.45 (20 oC) 

Solubility In water 29 mg/l (pH 4), 8 mg/l (pH 7), 7 mg/l (pH 8) (24 oC). In dimethylformamide 5, acetone 0.3, ethanol 0.3, chloroform 0.1, ethyl acetate 0.135, dichloromethane 0.068, benzene 0.036, cyclohexane <0.01, diethyl ether <0.01, hexane 0.0005 (all in g/l, 24 oC). 

Stability Decomposes at m.p.; stable for at least 2 y below 50 oC. Stable after 7 d at 20 000 lux. Slowly decomposed in alkaline solution (22 oC); DT50 >350 d (pH 5 and pH 7), 124 d (pH 9). Stable in acids, forming water-soluble salts. 

pKa 4.2, weak base 

8.  Toxic class (WHO): Slightly hazardous (III)

9.  CAS registry number: 10605-21-7

10. Appearance: White to off-white liquid.

11. Applications:

Mode of action Systemic fungicide with protective and curative action. Absorbed through the roots and green tissues, with translocation acropetally. Acts by inhibiting development of the germ tubes, the formation of appressoria, and the growth of mycelia.

Uses Control of Septoria, Fusarium, Erysiphe and Pseudocercosporella in cereals; Sclerotinia, Alternaria and Cylindrosporium in oilseed rape; Cercospora and Erysiphe in sugar beet; Uncinula and Botrytis in grapes; Cladosporium and Botrytis in tomatoes; Venturia and Podosphaera in pome fruit and Monilia and Sclerotinia in stone fruit.