Preparation and characterization of standard sample of 1-sulfonic acid cyclohexane carboxylic acid

1-Sulfonic acid cyclohexane carboxylic acid was obtained via decolorying of active carbon,acidifying of inorganic acids and crystallizing-out from the 1-sulfonic acid cyclohexane carboxylic acid crude salt of content about 80% in the treatment of finally waste fluid during the production of caprolactam from toluene.The preparation conditions were optimized.The results showed that the purity of compounds reached 99.8% and its structures were confirmed by IR and 1HNMR and 13CNMR.It can be used as standard sample of liquid chromatography.