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 ChromatographyThis 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. |
Contents
3 | |
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 |
Common terms and phrases
1,5-Naphthalenediol Standard Substance 1,7-naphthalenediol and 2,3-naphthalenediol 1,7-Naphthalenediol Standard Substance 1,7-naphthalenediol Time/min 10mL stoppered colorimetric acetic acid solution acid solution 4.4 brown volumetric flasks CAS Numbers Chemical Structures Chinese Names Chromatogram of Four Chromatograph Gradient Elution chromatographic peak conditions of high-performance constant volume Cosmetics 2015 Edition determination of 1,7-naphthalenediol ethanol 4.3 extraction for 15min Figure B.2 Figure B.5 filter membrane 4.8 four naphthalenediols standard gas pressure high-performance liquid chromatograph INCI Names Ion source Liquid Chromatograph Gradient liquid chromatography-mass spectrometry/mass mass concentration Mass spectrometry reference masses and chemical method quantification limit Molecular Formulas naphthalenediols standard solutions naphthalenediols standard substances perform ultrasonic extraction performance liquid chromatography place into 100mL prohibited substances Quantitative ion Relative Molecular Masses retention Specification for Cosmetics specimen solution Spectrogram of 1,5-Naphthalenediol Spectrogram of 2,7-Naphthalenediol spectrometry reference conditions standard curve standard stock solutions Standard Substance Solution Table A.1 Take 0.5g accurate Take 2mL test composition volume to 5mL Wavelength/nm Figure µg/mL