Analysis of domiphen bromide and cetylpyridinium chloride in cosmetic products by high-performance liquid chromatography.

Synopsis HPLC separation and quantitative determination of aromatic quaternary ammonium compounds in cosmetic products by means of cation-exchange silica gel material and UV spectrophotometric detection.

Analysis of hexamidine, dibromohexamidine, dibromopropamidine and chlorhexidine in cosmetic products by high-performance liquid chromatography.

Synopsis A method of determining qualitatively and quantitatively hexamidine, dibromohexamidine, dibromopropamidine and chlorhexidine in cosmetic products by means of paired ion, reverse-phase high-performance liquid chromatography (HPLC) and ultraviolet detection (UV) at 264 nm.

Determination of chlorobutanol in cosmetic products by electron capture gas chromatography.

Synopsis A method of determining qualitatively and quantitatively chlorobutanol in cosmetic products by means of an electron capture detector is described. Simple dilution procedure with a solvent containing an internal standard is used.