carbendazim 101 CARBENDAZIM (072) [See also BENOMYL (069)/THIOPHANATE-METHYL (077)] EXPLANATION Carbendazim was evaluated in 1973 and again in 1994 (residues) and 1995 (toxicology and environmental). The CCPR recommended that the definition of the residue should be reconsidered on the basis of information that had been provided by the UK and that a risk assessment would be required (ALINORM 97/24, para 51). The UK propose the residue definition as the sum of thiophanate-methyl, benomyl and carbendazim, expressed as carbendazim. MRLs cover carbendazim residues, resulting from direct use, or occurring as a metabolic product. Data was provided by the main manufacturers and by The Netherlands Government. IDENTITY ISO common name: carbendazim Chemical names: IUPAC: Methyl benzimidazol-2-ylcarbamate CA: Methyl 1H-benzimidazol-2-ylcarbamate CAS registration number: 10605-21-7 Structural formula: N N N O CH 3 H H O Molecular formula: C 9 H 9 N 3 O 2 Molecular weight: 191.21 Physical and chemical properties Pure active ingredient Melting point: 302-307 C with decomposition Relative density: 1.45 ± 0.05 g/ml at 20°C