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Carbendazim 50%WP 1) Chemical name: methyl-benzimidazol-2-ylcarbamate 2) Molecular formula: C9H9N3O2 3) Molecular weight: l91.2 4) CAS no.: 10605-21-7 Physical-chemical properties: 1) Appearance: white crystalline powder 2) M.p.: 302 - 307oC (decomp.) 3) V.p.: 0.09mPa (20oC) 4) KOW: logP=1.38 (pH5), 1.51 (pH7), 1.49 (pH9) 5) S.g./density: 1.45 (20oC) 6) Solubility: a) In water at 24oC, 29 mg/L (pH4), 8mg/L (pH7) b) 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, 24oC) 7) Stability: a) Decomposes at m.p.; stable for at least 2y below 50oC b) Slowly decomposes in alkaline solution (22oC) c) Stable in acids, forming water-soluble salts