Study on synthesis of benzyl p-hydroxybenzoate by phase transfer catalysis;

A study on technological improvement for synthesis of benzyl 4-hydroxybenzoate;

In this article, the preparation of benzyl 4-hydroxybenzoate in water was reported, with 4-hydroxybenzoic acid and benzyl chloride as main raw materials, cetyl trimthylamonium bromide as phrase transfer catalyst.

Using microwave in dry process without a supporter,benzyl 4-hydroxybenzoate was synthesized with 4-hydroxybenzoic acid and benzyl chloride by triethylamine as catalyst.

Synthesis of Benzyl 4-hydroxy benzoate by Microwave Irradiation;

The p-benzyloxy benzyl benzoate was directly synthesized by esterification and etherization reactions simultaneously of benzyl chloride and p-hydroxybenzoic acid in the presence of phase transfer catalyst,Na2CO3,and water.

Application of single drop microextraction in the determination of phthalate esters and parabens in drugs by gas chromatography-mass spectrometry;

di-ethyl phthalate(DEP),di-propyl phthalate(DPP),di-isobutyl phthalate(DIBP),di-butyl phthalate(DBP),benzyl butyl phthalate(BBP),di-cyclohexyl phthalate(DCHP),di-(2-ethylhexyl) phthalate(DEHP),di-octyl phthalate(DOP) and 4 parabens,i.

The paper introduces the preservative action of parabens to surfactants injected with standard ATCC and “wild” pseudomonas aeruginosa that is obtained by chemical detecting method (spectroscopic analysis) to analyze the masses changing of preservative.

Determination of p-hydroxybenzoate Antiseptics in Foods by Capillary Gas Chromatography;

Ultrasound extraction coupled on to high performance liquid chromatography was applied to determine 4 kinds of p-hydroxybenzoate antiseptics in food.