Leather. Chemical determination of the preservative (TCMTB, PCMC, OPP, OIT) content in leather by liquid chromatography - Acetonitrile extraction method

Leather. Chemical determination of the preservative (TCMTB, PCMC, OPP, OIT) content in leather by liquid chromatography - Acetonitrile extraction method

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1   Scope

This document specifies a test method by acetonitrile solvent extraction for the determination of the total content (solvent extractible) of the following preservative agents in leather by liquid chromatography:
  • — 2-(thiocyanomethylthio)-benzothiazole (TCMTB);
  • — 4-chloro-3-methylphenol (PCMC);
  • — 2-phenylphenol (OPP);
  • — 2-octylisothiazol-3(2H)-one (OIT);
This method can also be used to determine breakdown products of these preservative agents, which protect leather from microbiological attack.