Carbendazim
Title: Carbendazim
CAS Registry Number: 10605-21-7
CAS Name: 1H-Benzimidazol-2-ylcarbamic acid methyl ester
Additional Names: 2-benzimidazolecarbamic acid methyl ester; 2-(methoxycarbonylamino)benzimidazole; methyl 2-benzimidazolecarbamate; carbendazole; BMC; MBC; BCM
Manufacturers' Codes: BAS-3460; BAS-67054; CTR-6669; HOE-17411
Trademarks: Bavistin (BASF); Derosal (Hoechst); Delsene (DuPont)
Molecular Formula: C9H9N3O2
Molecular Weight: 191.19
Percent Composition: C 56.54%, H 4.74%, N 21.98%, O 16.74%
Literature References: Degradn product of benomyl, q.v. Prepn: H. M. Loux, US 3010968 (1961 to du Pont); H. A. Selling et al., Chem. Ind. (London) 1970, 1625. Activity: G. P. Clemons, H. D. Sisler, Pestic. Biochem. Physiol. 1, 32 (1971). Degradn in soil: A. Helweg, Pestic. Sci. 8, 71 (1977). Efficacy in controlling powdery mildew: G. R. Singh, T. B. Anilkumar, Indian J. Mycol. Plant Pathol. 16, 30 (1986). Review of environmental and toxicological effects: Carbendazim: Environ. Health Criteria 149, (World Health Organization, Geneva, 1993) 132 pp.
Properties: White powder, mp 302-307° (dec). pKa 4.48. Soly 20° (mg/ml): water, pH 7 8; pH 4 29. Soly 20° (mg/l): hexane 0.5; benzene 36; dichloromethane 68; ethanol 300; dimethylformamide 5000, chloroform 100, acetone 300. Slowly decomp in alkaline soln.
Melting point: mp 302-307° (dec)
pKa: pKa 4.48
Use: Fungicide.

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