Common name: Carbendazim

Chemical name: Methyl 1H-benzimidazol-2-ylcarbamate

CAS: 10605-21-7

PHYSICAL CHEMISTRY

Mol. Wt. 191.2 M. F. C9H9N3O2

Appearance: Crystalline powder. M. P. 302-307 (decomp. ) V. P. 0.09 mPa (20 ); 0.15 mPa (25 ); 1.3 mPa (50 ); Separate study gives <0.0001 mPa (20 ) KOW logP = 1.38 (pH 5), 1.51 (pH 7), 1.49 (pH 9) Henry 3.6? 10-3 Pa m3 mol-1 (calc. ) S. G. /density 1.45 (20 ) Solubility In water 29 mg/l (pH 4), 8 mg/l (pH 7), 7 mg/l (pH 8) (24 ). 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 ). Stability Decomposes at m. P.; Stable for at least 2 y below 50. Stable after 7 d at 20 000 lux. Slowly decomposed in alkaline solution (22 ); DT50 >350 d (pH 5 and pH 7), 124 d (pH 9). Stable in acids, forming water-soluble salts. PKa 4.2, weak base

Formulation: 98% tech, 50%WP, 50%SC

Packing: Net 25kg in woven or 200l drum or according the client's requirement.