GB/T 35824-2018: Translated English of Chinese Standard. (GBT 35824-2018, GB/T35824-2018, GBT35824-2018): Determination of 20 kinds of prohibited and restricted dyestuff in hair dyes - High performance liquid chromatography
https://www.chinesestandard.net, 2019 M01 20 - 16 pages
This standard specifies the high-performance liquid chromatography method for the determination of 20 kinds of prohibited and restricted dyestuff in hair dyes. This standard applies to the determination of 20 kinds of prohibited and restricted dyestuff in hair dyes. The detection limits and quantification limits for the dyestuff components of this standard are as given in Table A.1 of Appendix A.
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0.05 mol/L phosphate 1-naphthol 1,2-diaminobenzene 1,3-dihydroxylbenzene 1,5-naphthalenediol 2-methyl-1,4-benzenediamine sulfate 2-methyl-5-N-hydroxyethylaminophenol 2,7-dihydroxynaphthalene 20 kinds 25 mL graduated 4-aminophenol 4-chlororesorcinol 4-nitro-o-phenylenediamine 6-amino-m-cresol 6-hydroxyindole 95 volume ratio accurate to 0.001 Accurately pipette Accurately weigh 1.0 Analytically pure brown volumetric flask CAS number chromatography for determination conditions of liquid Detection limit determination of 20 diaminobenzene Diode array detector Disodium hydrogen phosphate disperse the sample dyestuff in hair ethanol filter the supernatant g accurate GB/T graduated plastic centrifuge hair dyes high-performance liquid chromatography hydroxybenzomorpholine kinds of prohibited limit of quantitation Liquid chromatogram membrane to filter mL graduated plastic Mobile phase mol/L phosphate buffer obtain the determination phenylenediamine phosphate buffer solution Potassium dihydrogen phosphate preservation period prohibited and restricted quantitation of 20 r/min reach to 25 relative molecular mass restricted dyestuff sample solution sodium bisulfite solution 4.8 specimen standard stock solution standard substance Table B.1 target dyestuff tube with stopper Ultrasonic volume reach Vortex weigh 1.0 g