Identification of impurities in technical metalaxyl

Impurities such as 2,6-dimethylaniline, N-methyl-2,6-dimethylaniline, N-(1- methoxycarbonyl-ethyl)-2,6-dimethylaniline, N-methyl-N-(1-methoxycarbonyl-e thyl)-2,6-dimethylanine, N-methyl-N-(1-methoxyacetyl)-2,6-dimethylaniline, N-(1-methoxyacetyl)-2,6-dimethylaniline and N-ethyl-N-(methoxyacetyl)-2,6-d imethylaniline present in samples of technical metalaxyl were isolated by c olumn chromatography and identified by nuclear magnetic resonance, mass spe ctroscopy and comparison with reference compounds. (C) 2000 Published by El sevier Science Ltd. All rights reserved.