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GB/T 40891-2021 English PDF

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US$179.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 40891-2021: Determination of lyral in cosmetics - Gas chromatography-mass spectrometry
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 40891-2021	179	Add to Cart	3 days	Determination of lyral in cosmetics - Gas chromatography-mass spectrometry	Valid

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Basic data

Standard ID: GB/T 40891-2021 (GB/T40891-2021)
Description (Translated English): Determination of lyral in cosmetics - Gas chromatography-mass spectrometry
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Y42
Word Count Estimation: 9,971
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 40891-2021: Determination of lyral in cosmetics - Gas chromatography-mass spectrometry

---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 lyral in cosmetics - Gas chromatography-mass spectrometry ICS 71.100.70 CCSY42 National Standards of People's Republic of China Determination of neolilyal in cosmetics Gas chromatography-mass spectrometry Released on 2021-11-26 2022-06-01 implementation State Administration for Market Regulation Issued by the National Standardization Management Committee

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents" Drafting. Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying patents. This document was proposed and managed by the National Standardization Technical Committee on Inspection Methods for Key Products of Quality Supervision (SAC/TC374). Drafting organizations of this document. Shanghai Institute of Quality Supervision and Inspection Technology, CCIC Warner (Beijing) Quality Technology Center Co., Ltd., Hua'an Tang Biological Technology Group Co., Ltd., Shuiyang Group Co., Ltd., Perfect (Guangdong) Commodity Co., Ltd., Guangzhou Jintong Biological Technology Co., Ltd. Co., Ltd., Warner Pass (Beijing) Certification Co., Ltd. The main drafters of this document. Gu Yuxiang, Ma Yuelong, Hu Shoujiang, Yang Dan, Yang Baogang, Weng Shiyu, Xue Feng, Lu Yi, Ma Wanqun, Dai Yanyun, Meng Jie, Long Yongan, Dai Yuefeng, Huang Ruijuan, Wu Kaihua, Kong Lingchao, Zheng Cunzhe. Determination of neolilyal in cosmetics Gas chromatography-mass spectrometry

1 Scope

This document specifies the principles, reagents and materials, instruments and equipment, analytical procedures, and analytical procedures for the determination of lilyal in cosmetics by gas chromatography-mass spectrometry. Result calculation, precision. This document is applicable to the determination of new lilyal in liquids, lotions, creams and perfume cosmetics.

2 Normative references

The content of the following documents constitutes an indispensable clause of this document through normative references in the text. Among them, dated quotations Only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to This document. GB/T 6682 Analytical laboratory water specifications and test methods

3 Terms and definitions

There are no terms and definitions that need to be defined in this document.

4 Principle

After the sample is added to acetonitrile, vortex and shake, ultrasonically extract, centrifuge and precipitate, add octadecyl-bonded silica gel powder to the supernatant for purification, and then After centrifugal precipitation, the supernatant was detected by gas chromatography-mass spectrometry and quantified by external standard method.

5 Reagents and materials

Unless otherwise specified, only use chromatographically pure reagents. 5.1 Water, GB/T 6682, level one. 5.2 Acetonitrile. 5.3 Anhydrous sodium sulfate, analytically pure. 5.4 Neolilyal. contains 2 isomers, molecular formula C13H22O2, relative molecular mass 210.32, total purity not less than 95.0%, See Appendix A for chemical name, CAS number and structure diagram. 5.5 Standard stock solution, 1000mg/L. accurately weigh 0.025g (accurate to 0.0001g) standard product (5.4) into a 25mL volumetric flask, Dissolve and dilute to the mark with acetonitrile (5.2). The standard stock solution is stored in the dark at -18℃, and the validity period is 6 months. 5.6 Standard use solution, 10.0mg/L. Pipette 1.0mL standard stock solution (5.5) into a 100mL volumetric flask, dilute with acetonitrile (5.2) to Scale. The standard use solution is stored at -18℃, and the validity period is 30 days. 5.7 Octadecyl bonded silica gel powder. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 40891-2021_English be delivered?

Answer: Upon your order, we will start to translate GB/T 40891-2021_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 GB/T 40891-2021_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 40891-2021_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+ countries

Question 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.