GB/T 35829-2018: Translated English of Chinese Standard. (GBT 35829-2018, GB/T35829-2018, GBT35829-2018): Determination of Four Naphthalenediols in Cosmetics - High Performance Liquid Chromatography

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https://www.chinesestandard.net, 2 feb. 2019 - 16 pagini
This Standard specifies high performance liquid chromatography for the determination of 1,7-naphthalenediol, 2,3-naphthalenediol, 1,5-naphthalenediol and 2,7-naphthalenediol in cosmetics. This Standard is applicable to the determination of 1,7-naphthalenediol, 2,3-naphthalenediol, 1,5-naphthalenediol and 2,7-naphthalenediol in non-wax-based cream, lotion, gel, water and powder cosmetics.
 

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Foreword
3
Introduction
4
Scope
5
Reagents and Materials
6
Analytical Procedures
7
Results Calculation
8
Recovery Rate and Precision
9
Appendix A Informative Information on Naphthalenediol Standard Substance
10
Appendix B Informative Liquid Chromatogram and Spectrogram of Four Naphthalenediols Standard Substance Solutions
11
Informative Confirmation Test
14

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