1.  Common name: Carbendazim

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

3.  Chemical class: benzimidazole fungicides and benzimidazolylcarbamatefungicides

4.  Type of formulation: SC (suspension concentrate)

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

6.  Structural formula:

7.  Chemical properties:

Molecularweight: 191.2 

Meltingpoint: 302-307 °C (decomp.) 

Vaporpressure: 0.09 mPa (20°C); 0.15 mPa (25 °C); 1.3 mPa (50 °C); separate study gives <0.0001 mPa (20 °C) 

KOW logP = 1.38 (pH 5), 1.51 (pH 7), 1.49 (pH9) 

Henry 3.6 x 10-3 Pa m3 mol-1 (calc.) 

S.g./density 1.45 (20 °C) 

Solubility In water 29 mg/l (pH 4), 8 mg/l (pH 7), 7 mg/l (pH 8) (24 °C). Indimethylformamide 5, acetone 0.3, ethanol 0.3, chloroform 0.1, ethyl acetate0.135, dichloromethane 0.068, benzene 0.036, cyclohexane <0.01, diethylether <0.01, hexane 0.0005 (all in g/l, 24 °C). 

Stability Decomposes at m.p.; stable for at least 2 y below 50 °C. Stable after 7 d at 20000 lux. Slowly decomposed in alkaline solution (22 °C); 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:

Modeof action: Systemic fungicide with protective andcurative action. Absorbed through the roots and green tissues, withtranslocation acropetally. Acts by inhibiting development of the germ tubes,the formation of appressoria, and the growth of mycelia.

Uses: Control of Septoria, Fusarium, Erysiphe andPseudocercosporella in cereals; Sclerotinia, Alternaria and Cylindrosporium inoilseed rape; Cercospora and Erysiphe in sugar beet; Uncinula and Botrytis ingrapes; Cladosporium and Botrytis in tomatoes; Venturia and Podosphaera in pomefruit and Monilia and Sclerotinia in stone fruit.