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China Surfactant Detergent & Cosmetics ›› 2023, Vol. 53 ›› Issue (3): 355-360.doi: 10.3969/j.issn.1001-1803.2023.03.015

• Analytical methods and testing • Previous Articles     Next Articles

Determination of methyl salicylate in 6 kinds of cosmetics bases by GC

Wang Yajing,Jia Boyang,Wu Guoqing,Di Zheng*()   

  1. Beijing Institute for Drug Control, Beijing 102206, China
  • Received:2022-03-24 Revised:2023-03-01 Online:2023-03-22 Published:2023-03-22
  • Contact: * Tel.: +86-18010281201, E-mail: dizheng_bidc@163.com.

Abstract:

A method for the determination of methyl salicylate in 6 kinds of cosmetics bases by gas chromatography (GC) was established, and gas chromatography-mass spectrometry (GC-MS) was used to analyze for qualitative verification. The wax-based samples were extracted with ethyl acetate-absolute ethanol, and the other bases were extracted with anhydrous ethanol, and then were determined by GC equipped with hydrogen flame ionization detector (FID). GC-MS adopt full SCAN and selective ion monitoring (SIM) methods to confirm the results. Linear relationship between the mass concentration of methyl salicylate and its peak area is kept in the range of 5-500 mg/L (r=0.999 9), with the detection limit of 4 μg/g, and the quantification limit of 100 μg/g. The average recovery rate of the six bases spiked at high, medium and low concentrations are 96.9%-108.2%, and the RSDs (n=6) are all less than 2.9%. The method is used to analyze different commercially available samples. The content of methyl salicylate in one batch of the lip balm is 0.083%, which exceeds the maximum concentration recommended by Scientific Committee on Consumer Safety (SCCS). The method is fast and accurate, suitable for the qualitative and quantitative analysis of methyl salicylate in different cosmetic bases, and provides technical support for the determination and screening of methyl salicylate in cosmetics.

Key words: methyl salicylate, gas chromatography, gas chromatography-tandem mass spectrometry, cosmetics

CLC Number: 

  • TQ658