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SN/T 4576-2016: Determination of methyl methacrylate in cosmetics for export - Headspace gas chromatography
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| SN/T 4576-2016 | English | 229 |
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Determination of methyl methacrylate in cosmetics for export - Headspace gas chromatography
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SN/T 4576-2016
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PDF similar to SN/T 4576-2016
Basic data | Standard ID | SN/T 4576-2016 (SN/T4576-2016) | | Description (Translated English) | Determination of methyl methacrylate in cosmetics for export - Headspace gas chromatography | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Classification of Chinese Standard | Y42 | | Word Count Estimation | 10,122 | | Date of Issue | 2016-08-23 | | Date of Implementation | 2017-03-01 | | Regulation (derived from) | State-Quality-Inspection-Certification (2016)438 | | Issuing agency(ies) | General Administration of Customs | SN/T 4576-2016: Determination of methyl methacrylate in cosmetics for export - Headspace gas chromatography
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Determination of methyl methacrylate in cosmetics for export-Headspace gas chromatography
People's Republic of China Exit Inspection and Quarantine standards
Determination of methyl methacrylate in cosmetics for export
Headspace gas chromatography
chromatography
2016-08-23 released
2017-03-01 Implementation
People's Republic of China
General Administration of Quality Supervision, Inspection and Quarantine released
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
Please note that some of this document may be patentable. The release of this document
The agency does not assume responsibility for identifying these patents.
This standard is proposed and managed by the People's Republic of China Certification and Accreditation Administration.
This standard was drafted by the People's Republic of China Chongqing Entry-Exit Inspection and Quarantine, People's Republic of China Hubei Exit Inspection and Quarantine
Epidemic
The main drafters of this standard. Liu Yi, Zheng Guocan, Wang Peng, Wang Jing, Peng Guangyu, Chen Jiang, Zhang Lei, Li Xianliang, Wang Guomin.
Determination of methyl methacrylate in cosmetics for export
Headspace gas chromatography
1 Scope
This standard specifies the determination of methyl methacrylate in cosmetics by headspace gas chromatography.
This standard applies to the determination of methyl methacrylate in cosmetics.
2 method summary
After the methyl methacrylate in cosmetics is dissolved in acetone, it is heated in a closed vial at a constant temperature for a period of time to allow the system
Methyl methacrylate in the gas-liquid two-phase to achieve the balance of distribution. Then, the gas phase part of the gas chromatographic separation, hydrogen flame away
Sub-detector (FID) detection, external standard method.
3 Reagents and materials
3.1 acetone, chromatography pure.
3.2 Methyl methacrylate standard material. CAS No. 80-62-6, purity of more than 99.8%.
3.3 standard stock solution Accurately weigh 0.0250g (accurate to 0.1mg) methyl methacrylate standard substance in a 25mL volumetric flask,
The sample solution was dissolved in acetone to obtain a standard stock solution with a concentration of 1000 μg/mL. The solution was kept in the dark at 0 ° C to 4 ° C.
3.4 standard working solution. Draw an appropriate amount of standard stock solution (3.3) acetone was diluted to prepare a methyl methacrylate concentration of
10 μg/mL, 20 μg/mL, 50 μg/mL, 100 μg/mL,.200 μg/mL and 500 μg/mL of standard solution,
4 ° C protected from light.
3.5 standard curve solution respectively take 1mL standard working solution (3.4) to the headspace bottle, then add 2mL acetone, cover, shake (per bottle
Corresponding to 10 μg, 20 μg, 50 μg, 100 μg,.200 μg, and 500 μg, respectively, of methyl methacrylate) as working curves.
4 instruments and equipment
4.1 gas chromatograph equipped with hydrogen flame ionization detector.
4.2 Automatic Headspace Sampler.
4.3 headspace bottle .20mL, with aluminum cover and PTFE membrane silicone rubber pad.
4.4 analytical balance. Sense of 0.1mg.
5 determination
5.1 Sample Preparation
Weigh accurately 0.5g (accurate to 0.01g) sample in 20mL headspace bottle, add 3mL acetone, shake well, to be measured.
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