Abstract
An HPLC procedure was developed for the determination of 2 Methyl 4,5-trimethylene-4-isothothiazolin-3-one in water-oil emulsions. The analytical procedure consists of the extraction in the presence of orthophosphoric acid and elution of MTI from Hypersil ODS column with acetonitrile solution of H3PO4—water solution of H3PO4 as a mobile phase.