GB/T 35946-2018: Translated English of Chinese Standard. (GBT 35946-2018, GB/T35946-2018, GBT35946-2018): Determination of thimerosal in eye cosmetics - High performance liquid chromatography
https://www.chinesestandard.net, 2019 M02 16 - 10 pages
This Standard specifies the test method, result calculation, recovery and accuracy, tolerances, etc. for the determination of thimerosal in eye cosmetics using the highperformance liquid chromatography. This Standard applies to the determination of thimerosal in eye cosmetics, including cleansing lotion, eye shadow, eye cream, mascara, liquid eyeliner, eyeliner cream and eyebrow pencil. The detection limits and quantitation limits of the Method of this Standard: the detection limit of cleansing lotion is 1 mg/kg and the detection limit of eye shadow, eye cream, liquid eyeliner, etc. is 2 mg/kg; the quantitation limit of cleansing lotion is 3 mg/kg and the quantitation limit of eye shadow, eye cream, liquid eyeliner, etc. is 6 mg/kg.
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100 mL volumetric accurately transfer accurately weigh acid methanol solution adding dropwise Ammonium acetate CAS number Chinese name chromatographically pure collect the outflow concentration thimerosal standard constitutional formula content of thimerosal detection limit determination of thimerosal dissolve before adding dropwise to scale English name Eye cleansing lotion eye cosmetics eye cream eye shadow eyebrow pencil eyeliner cream Flavor and Cosmetics formic acid methanol formula of thimerosal GB/T High performance liquid INCI name intermediate concentration thimerosal Jiangsu limit of cleansing liquid eyeliner mass and constitutional mass concentration methanol to dilute Methyl alcohol mg/kg mg/L mL of formic mL of methanol mL volumetric flask molecular formula pass through microfiltration performance liquid chromatography phase extraction cartridge Quality Supervision quantitation limit relative molecular mass Result calculation Solid phase extraction standard curve standard stock solution standard substance standard working solution Supervision and Inspection Table A.1 thimerosal in eye thimerosal in sample Thimerosal standard sample thimerosal standard stock