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GB/T 24800.11-2009: Determination of benzyl alcohol as antiseptic in cosmetics by gas chromatography method
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 24800.11-2009 | English | 139 |
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Determination of benzyl alcohol as antiseptic in cosmetics by gas chromatography method
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GB/T 24800.11-2009
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Basic data | Standard ID | GB/T 24800.11-2009 (GB/T24800.11-2009) | | Description (Translated English) | Determination of benzyl alcohol as antiseptic in cosmetics by gas chromatography method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Y42 | | Classification of International Standard | 71.100.70 | | Word Count Estimation | 6,612 | | Date of Issue | 2009-11-30 | | Date of Implementation | 2010-05-01 | | Regulation (derived from) | National Standard Approval Announcement 2009 No.14 (Total No.154) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the determination of benzyl alcohol preservative in cosmetics by gas chromatography. Determination of cosmetics such as benzyl alcohol lotion, This standard applies to creams, emulsion. | GB/T 24800.11-2009: Determination of benzyl alcohol as antiseptic in cosmetics by gas chromatography method
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Determination of benzyl alcohol as antiseptic in cosmetics by gas chromatography method
ICS 71.100.70
Y42
National Standards of People's Republic of China
Determination of benzyl alcohol preservatives in cosmetics
Gas Chromatography
Posted 2009-11-30
2010-05-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
Appendix A of this standard is an informative annex.
The standard proposed by China National Light Industry Council.
This standard by the National Standardization Technical Committee of Fragrance Flavor and Cosmetic (SAC/TC257) centralized.
This standard is drafted by. Shanghai Institute of Quality Supervision, Inspection.
The main drafters of this standard. Cao Chengming, Zhouyao Bin, Li Qin, Gu Yuxiang, Zhou Zelin.
Determination of benzyl alcohol preservatives in cosmetics
Gas Chromatography
1 Scope
This standard specifies the determination of benzyl alcohol preservative in cosmetics by gas chromatography.
This standard applies to the determination of benzyl alcohol cream, lotion, lotion, hair dyes and other cosmetics. The detection limit of this method is 13μg/g,
Quantification limit of the method was 0.005%.
Principle 2
The sample was ethanol ultrasonic extraction, centrifugation after the separation, with nitrogen as a carrier gas, using gas chromatography capillary column, flame from
Ionization detector (FID detector), external standard.
3 Reagents and materials
Unless otherwise stated, all reagents were of analytical grade.
3.1 ethanol.
3.2 benzyl alcohol, chromatography, content of not less than 99.5%.
3.3 benzyl alcohol standard stock solution. Accurately weigh 0.1000g of benzyl alcohol in 100mL volumetric flask, dissolved in ethanol and dilute to the mark
degree. This solution was equivalent to 1.0mg 1mL benzyl alcohol.
4 instruments and equipment
4.1 Gas chromatograph. with flame ionization detector (FID).
4.2 Analytical balance, a sense of the amount of 0.1mg.
4.3 Analytical balance, a sense of the amount of 0.01g.
4.4 flask. 10mL, 100mL.
4.5 plug scale centrifugal tube. 10mL.
4.6 ultrasonic oscillator.
4.7 centrifuge. speed of not less than 3000r/min.
4.8 Membrane. Aperture 0.45mm.
Step 5 Analysis
5.1 Preparation of the standard curve
5.1.1 Standard solution series
Pipette accurately benzyl alcohol standard stock solution (3.3) 1.00mL, 2.00mL, 3.00mL, 4.00mL, 5.00mL to 10mL
Flask, diluted with ethanol to the mark. Preparation of a concentration of 100μg/mL, 200μg/mL, 300μg/mL, 400μg/mL,
500μg/mL solution of the standard series.
5.1.2 GC reference conditions
Reference GC conditions were as follows.
a) Column. 5% phenyl dimethylpolysiloxane silica capillary, 60m × 0.53mm (inner diameter) × 1.0μm, or equivalent person;
b) Column temperature. 100 ℃ holding 3min, at a rate of 10 ℃/min heating to 240 ℃, then at a rate of 40 ℃/min the temperature was raised to
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