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GB/T 23671-2023 English PDF

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GB/T 23671-2023: 2-Hydroxy-6-naphthoic acid
Status: Valid

GB/T 23671: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 23671-2023English189 Add to Cart 3 days [Need to translate] 2-Hydroxy-6-naphthoic acid Valid GB/T 23671-2023
GB/T 23671-2009English319 Add to Cart 3 days [Need to translate] 2-Hydroxy-6-naphthalene carboxylic acid Obsolete GB/T 23671-2009

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Basic data

Standard ID GB/T 23671-2023 (GB/T23671-2023)
Description (Translated English) 2-Hydroxy-6-naphthoic acid
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard G56
Classification of International Standard 71.100.01; 87.060.10
Word Count Estimation 10,172
Date of Issue 2023-09-07
Date of Implementation 2024-04-01
Older Standard (superseded by this standard) GB/T 23671-2009
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 23671-2023: 2-Hydroxy-6-naphthoic acid

---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.
ICS 71.100.01;87.060.10 CCSG56 National Standards of People's Republic of China Replace GB/T 23671-2009 2-Hydroxy-6-naphthoic acid Published on 2023-09-07 2024-04-01 Implementation State Administration for Market Regulation Released by the National Standardization Administration Committee

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents" Drafting. This document replaces GB/T 23671-2009 "2-Hydroxy-6-naphthoic acid". Compared with GB/T 23671-2009, except for structural adjustment and compilation In addition to editorial changes, the main technical changes are as follows. ---Added terms and definitions (see Chapter 3); ---Changed the quality requirements for 2-hydroxy-6-naphthoic acid (see Chapter 4, Chapter 3 of the.2009 edition); ---Changed the sampling volume (see Chapter 5, Chapter 4 of the.2009 edition); ---Changed the appearance assessment method (see 6.2, 5.2 of the.2009 version); ---Added instrumental method for melting point determination (see 6.3.2); ---Changed the chromatographic analysis conditions (see 6.4.4.5, 5.4.4 of the.2009 edition); ---Changed the weighing sample amount for ash content determination (see 6.5, 5.5 in the.2009 version); ---Changed the weighing amount for determination of alkali-insoluble matter content (see 6.7, 5.7 of the.2009 edition); --- Added methods for determination of metallic iron, potassium, sodium content and total calcium and magnesium content (see 6.8); ---The content of the logo has been changed (see 8.1, 7.1.1 of the.2009 version). Please note that some content in this document may be subject to patents. The publisher of this document assumes no responsibility for identifying patents. This document is proposed by China Petroleum and Chemical Industry Federation. This document is under the jurisdiction of the National Dyestuffs Standardization Technical Committee (SAC/TC134). This document was drafted by. Suqian Siruiyi New Materials Co., Ltd., Quzhou Yingte Polymer Materials Co., Ltd., Shenyang Shenyang Chemical Institute Testing Technology Technology Co., Ltd., Shenyang Chemical Industry Research Institute Co., Ltd., Xiamen Kaiyuete Technology Co., Ltd., Shenyang Sinochem New Material Technology Co., Ltd., Jinhua CHENGTUO HOME PRODUCTS LIMITED. The main drafters of this document. Liu Lei, Zhang Li, Hu Yanbing, Ke Youbin, Feng Yongsheng, Tan Yunchao, Zhao Zhimin, Xu Aofeng, Yuan Peng, Yang Jiemin, Xiang Qinglong. This document was first published in.2009 and this is the first revision. 2-Hydroxy-6-naphthoic acid

1 Scope

This document specifies the requirements, sampling, test methods, inspection rules, as well as marking, labeling, packaging, transportation and Storage. This document applies to the quality control of 2-hydroxy-6-naphthoic acid products. Structural formula. Molecular formula.C11H8O3 Relative molecular mass. 188.18 (according to 2021 international relative atomic mass) CAS number.16712-64-4

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document. GB/T 2381-2013 Determination of insoluble matter content of dyes and dye intermediates GB/T 2384-2021 General method for determination of melting point range of dye intermediates GB/T 2386-2014 Determination of moisture content of dyes and dye intermediates GB/T 6678-2003 General principles for sampling of chemical products GB/T 6682-2008 Specifications and test methods for water used in analytical laboratories GB/T 8170-2008 Numerical rounding rules and representation and determination of limit values GB/T 15337-2008 General principles of atomic absorption spectrometry GB 20814-2014 Limits and determination of heavy metal elements in dye products GB/T 21876 Determination of ash content of solvent dyes and dye intermediates

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 natural northern daylight naturenorthskylight Scattered light in the northern sky from 3 hours after sunrise to 3 hours before sunset.

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