Gas-chromatographic determination of dilauryl ββ′-thiodipropionate and its primary oxidation products

Abstract

A method is described for the gas-chromatographic determination of dilauryl ββ′-thiodipropionate and its oxidation products, dilauryl sulphenyldipropionate and dilauryl sulphonyldipropionate. The sample is first hydrolysed in a 5 N methanolic solution of potassium hydroxide and the resulting lauryl alcohol is then determined gas chromatographically by using the internal marker technique.

The method can be used to determine concentrations down to 10 µg ml^–1, with a standard deviation of ±3 per cent.