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GB/T 42423-2023 English PDF

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US$169.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 42423-2023: Determination of dichlorobenzyl alcohol and chlorophensin in cosmetics - High performance liquid chromatography
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 42423-2023	169	Add to Cart	3 days	Determination of dichlorobenzyl alcohol and chlorophensin in cosmetics - High performance liquid chromatography	Valid

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Basic data

Standard ID: GB/T 42423-2023 (GB/T42423-2023)
Description (Translated English): Determination of dichlorobenzyl alcohol and chlorophensin in cosmetics - High performance liquid chromatography
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Y42
Classification of International Standard: 71.100.70
Word Count Estimation: 8,899
Date of Issue: 2023-03-17
Date of Implementation: 2023-10-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 42423-2023: Determination of dichlorobenzyl alcohol and chlorophensin 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.
ICS71:100:70 CCSY42 National Standards of People's Republic of China Determination of Dichlorobenzyl Alcohol and Chlorphenesin in Cosmetics HPLC Released on 2023-03-17 2023-10-01 implementation State Administration for Market Regulation Released 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 for Standardization Documents" drafting: Please note that some contents of this document may refer to patents: The issuing agency of this document assumes no responsibility for identifying patents: This document is proposed by China National Light Industry Council: This document is under the jurisdiction of the National Standardization Technical Committee of Fragrance, Flavor and Cosmetics (SAC/TC257): This document was drafted by: Shanghai Perfume Research Institute Co:, Ltd:, Shanghai Institute of Quality Supervision and Inspection Technology, Proya Cosmetics Co:, Ltd: Co:, Ltd:, Infinitus (China) Co:, Ltd: The main drafters of this document: Zheng Yuanjun, Yang Bin, Nie Lei, Sun Shurong, Sun Hongmei, Liu Xianzhao: Determination of Dichlorobenzyl Alcohol and Chlorphenesin in Cosmetics HPLC Caution --- Personnel using this document should have practical experience in formal laboratory work: This document does not address all possible security issues question: It is the user's responsibility to take appropriate safety and health measures and ensure compliance with the relevant national regulations:

1 Scope

This document describes the HPLC method for the determination of dichlorobenzyl alcohol and chlorphenesin in cosmetics, including principles, reagents and materials, Instruments and equipment, test procedures, test data processing, recovery rate, precision, etc: This document is applicable to the content of dichlorobenzyl alcohol and chlorphenesin in lotion, lotion, cream (oil-in-water), and cream (water-in-oil) cosmetics detection: The method detection limit of dichlorobenzyl alcohol and chlorphenesin in this document is 0:0008%, and the limit of quantification is 0:0025%:

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text: Among them, dated references For documents, 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

This document does not have terms and definitions that need to be defined:

4 principles

Dichlorobenzyl alcohol and chlorphenesin in the sample were extracted by methanol, and determined by high performance liquid chromatography with retention time and ultraviolet absorption spectrum: The properties were quantified by peak area, and the content of dichlorobenzyl alcohol and chlorphenesin was calculated by external standard method:

5 Reagents and Materials

Unless otherwise specified, all reagents used were chromatographically pure: 5:1 Methanol: 5:2 Water: GB/T 6682, Class I: 5:3 Dichlorobenzyl alcohol and chlorphenesin standard substances: the purity is not less than 99:0%, the English names of dichlorobenzyl alcohol and chlorphenesin, INCI See Table A:1 in Appendix A for name (international cosmetic raw material name), CAS number, molecular formula, relative molecular mass and chemical structural formula: 5:4 Dichlorobenzyl alcohol and chlorphenesin standard stock solution: Accurately weigh 0:1g of each of dichlorobenzyl alcohol and chlorphenesin standard substance (5:3) (accurate to 0:0001g) in a 100mL volumetric flask, dissolved with methanol (5:1) and diluted to the mark: The obtained mass concentration is 1:0mg/mL Standard stock solutions of chlorobenzyl alcohol and chlorphenesin: It can be stored for 1 month at 4°C: 5:5 Filter membrane: the pore size is 0:45 μm, and the material is polytetrafluoroethylene: ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 42423-2023_English be delivered?

Answer: Upon your order, we will start to translate GB/T 42423-2023_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 GB/T 42423-2023_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 42423-2023_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+ 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.