GB/T 35953-2018 Translated English of Chinese Standard. (GBT 35953-2018, GB/T35953-2018, GBT35953-2018): Determination of restricted dichloromethane and 1,1,1-trichloroethane in cosmetics - Headspace gas chromatographyThis Standard specifies reagents and materials, instruments and equipment, analytical procedures, calculation of results, recovery and precision, allowable difference, etc. of headspace gas chromatography for dichloromethane and 1,1,1-trichloroethane in cosmetics. This Standard is applicable to the determinations of dichloromethane and 1,1,1-trichloroethane in cream, milk, liquid, water cosmetics. The detection limits of this Standard for dichloromethane and 1,1,1-trichloroethane are 0.070mg/kg and 0.0010mg/kg, respectively. The limits of quantification are 0.25mg/kg and 0.0050mg/kg, respectively. |
Contents
| 3 | |
Scope | 4 |
Reagents and materials | 5 |
Calculation of result | 7 |
Annex A informative CAS number molecular formula relative molecular mass and structural formula of dichloromethane and 111trichloroethane | 9 |
Annex B informative Gas chromatograms of dichloromethane and 111 | 10 |