SN/T 1780: Evolution and historical versions
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| SN/T 1780-2024 | English | RFQ |
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(Determination of tert-chlorobutanol in imported and exported cosmetics)
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SN/T 1780-2024
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| SN/T 1780-2006 | English | 239 |
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Determination of chloroblltarlolum in cosmetics for import and export. Gas chromatography method
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SN/T 1780-2006
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PDF similar to SN/T 1780-2024
Basic data | Standard ID | SN/T 1780-2024 (SN/T1780-2024) | | Description (Translated English) | (Determination of tert-chlorobutanol in imported and exported cosmetics) | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Classification of Chinese Standard | Y42 | | Classification of International Standard | 71.100.70 | | Date of Issue | 2024-12-16 | | Date of Implementation | 2025-06-01 | | Issuing agency(ies) | General Administration of Customs | SN/T 1780-2006: Determination of chloroblltarlolum in cosmetics for import and export. Gas chromatography method
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Determination of chloroblltarlolum in cosmetics for import and export.Gas chromatography method
Book of the People's Republic of China Entry and Exit Inspection and Quarantine
Determination of chlorobutanol in imported and exported cosmetics
Gas chromatography
Released on.2006-04-25
Implementation of.2006-11-15
People's Republic
The General Administration of Quality Supervision, Inspection and Quarantine issued
Foreword
Appendix A of this standard is an informative annex.
This standard is proposed and managed by the National Certification and Accreditation Administration.
This standard was drafted by the China Academy of Inspection and Quarantine.
The main drafters of this standard. Bai Hua, Sun Haifeng, Cai Tianpei, Zhang Qing, Yu Wenlian.
This standard is the first industry standard for entry-exit inspection and quarantine.
Determination of chlorobutanol in imported and exported cosmetics
Gas chromatography
1 Scope
This standard specifies the gas chromatographic method for the determination of chlorobutanol in cosmetics.
This standard applies to the determination of chlorobutanol in cosmetics.
2 Principle
Trichloroethanol was added to the cosmetic sample as an internal standard, and extracted with absolute ethanol. The extract was filtered and determined by gas chromatography.
Qualitative according to its retention time, the internal standard method is quantitative.
3 reagents and materials
The reagents used were of analytical grade unless otherwise stated.
3.1 Anhydrous ethanol. excellent grade pure.
3.2 Chlorobutanol. purity ≥ 98%.
3.3 Internal standard. trichloroethanol, purity ≥ 98%.
3.4 Chlorobutanol standard stock solution. accurately weigh the appropriate amount of chlorobutanol standard (accurate to 0.1mg), dissolve it in absolute ethanol, make up, mix,
Formulated to a standard stock solution at a concentration of 100 μg/mL. The standard working solution is diluted to the appropriate concentration with ethanol as needed.
3.5 Internal standard stock solution. accurately weigh the appropriate amount of trichloroethanol standard (accurate to 0.1mg), dissolve in absolute ethanol, make up, mix, and prepare
An internal standard stock solution was added at a concentration of 25 μg/mL.
3.6 Filter paper.
4 instruments
4.1 Gas chromatograph with an electronic capture detector.
4.2 Ultrasonic cleaner.
5 Determination steps
5.1 Sample processing
Weigh about 0.5g (accurate to 1mg) of the cosmetic sample, add 3mL (3.5) of the internal standard in a 50mL stoppered flask, and add
15mL absolute ethanol, ultrasonic extraction for 20min, the extract was filtered into a 25mL volumetric flask with a funnel, and the volume was adjusted to the mark with anhydrous ethanol.
uniform. The filtrate was used for gas chromatography.
5.2 Determination
5.2.1 Chromatographic conditions
5.2.1.1 Column. DB-1701 column 30m × 250μm (inside diameter), film thickness 0.25μm, or equivalent;
5.2.1.2 Column temperature. 70 ° C
5 ° C /
→
Min
150 ° C
10 ° C /
→
Min
200 ° C (5 min);
5.2.1.3 carrier gas. nitrogen, purity is 99.999%;
5.2.1.4 Flow rate. 1.0mL/min;
5.2.1.5 inlet temperature. 250 ° C;
5.2.1.6 detector temperature. 250 ° C;
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