SN/T 1496-2023 English PDFUS$299.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. SN/T 1496-2023: (Determination of tocopherol and α-tocopheryl acetate in imported and exported cosmetics) Status: Valid SN/T 1496: Historical versions
Basic dataStandard ID: SN/T 1496-2023 (SN/T1496-2023)Description (Translated English): (Determination of tocopherol and ��-tocopheryl acetate in imported and exported cosmetics) Sector / Industry: Commodity Inspection Standard (Recommended) Classification of Chinese Standard: Y42 Classification of International Standard: 71.100.70 Word Count Estimation: 14,112 Date of Issue: 2023-12-29 Date of Implementation: 2024-07-01 Issuing agency(ies): General Administration of Customs SN/T 1496-2004: Determination of tocopherol and α-tocopheryl in cosmetics. High performance liquid 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 tocopherol and α-tocopheryl in cosmetics.High performance liquid chromatography People's Republic of China Entry-Exit Inspection and Quarantine Industry Standard Tocopherol and alpha-tocopheryl acetate in cosmetics Detection method high performance liquid chromatography Released on November 11,.2004 2005-04-01 implementation People's Republic The General Administration of Quality Supervision, Inspection and Quarantine issued ForewordAppendix 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. Li Xiang, Wang Xing, Ding Yan, Cai Tianpei, Wang Chao. This standard is the first industry standard for entry-exit inspection and quarantine. Tocopherol and alpha-tocopheryl acetate in cosmetics Detection method high performance liquid chromatography1 ScopeThis standard specifies the method for the determination of the total amount of tocopherol in the cosmetics and the content of α-tocopheryl acetate. This standard applies to the test of the total amount of tocopherol and α-tocopheryl acetate in cosmetics.2 PrincipleExtraction of α-tocopherol, β-tocopherol, γ-tocopherol, δ-tocopherol and α-fertility in cosmetics with a mixed solvent of ethanol, diethyl ether and n-hexane Phenol acetate, centrifugation, taking supernatant, using di-n-octyl phthalate as internal standard, determined by high performance liquid chromatography with UV detector, according to Its retention time is qualitative and the internal standard method is quantitative.3 reagents and materialsThe reagents were of analytical grade unless otherwise stated. 3.1 Methanol, excellent grade, filtered with 0.45μm filter. 3.2 n-hexane. 3.3 Ethanol. 3.4 ether. 3.5 α-tocopherol, purity 96.9%. 3.6 β-tocopherol, purity 96.9%. 3.7 γ-tocopherol with a purity of 99.5%. 3.8 δ-tocopherol with a purity of 92.4%. 3.9 α-tocopherol acetate, purity 99.2%. 3.10 Di-n-octyl phthalate, purity 99.0%. 3.11 Tocopherol and α-tocopheryl acetate standard stock solution. weigh the appropriate amount (accurate to 0.1mg) α-tocopherol, β-tocopherol, γ-sheng Tocopherol, δ-tocopherol, α-tocopherol acetate, di-n-octyl phthalate, make up to 100mL with n-hexane, shake well, and prepare various substances A mixed standard stock solution with a concentration of 0.5 mg/mL was stored at 4 °C. 3.12 Di-n-octyl phthalate internal standard stock solution. weigh the appropriate amount of di-n-octyl phthalate (accurate to 0.1mg) in 100mL capacity In a measuring flask, add n-hexane to the mark, shake well, prepare a solution with a concentration of 3.3 mg/mL, and store at 4 °C. 3.13 Di-n-octyl phthalate internal standard solution. Take 5 mL of internal standard stock solution (3.12) in a 100 mL volumetric flask, dilute to n-hexane. Shake well (this solution has a shelf life of 1d).4 Instruments and equipment4.1 High Performance Liquid Chromatograph. equipped with a UV detector. 4.2 Oscillator. 4.3 Centrifuge. 4.4 Erlenmeyer. Grinding plug, 50mL. 4.5 Volumetric flask. 50mL, 100mL. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of SN/T 1496-2023_English be delivered?Answer: Upon your order, we will start to translate SN/T 1496-2023_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of SN/T 1496-2023_English with my colleagues?Answer: Yes. The purchased PDF of SN/T 1496-2023_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.Question 5: Should I purchase the latest version SN/T 1496-2023?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version SN/T 1496-2023 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. |
