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GB/T 21896-2019 English PDF

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GB/T 21896-2019: 2-Naphthylamine-1, 5-disulfonic acid (sulfonic Tobias acid)
Status: Valid

GB/T 21896: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 21896-2019English199 Add to Cart 3 days [Need to translate] 2-Naphthylamine-1, 5-disulfonic acid (sulfonic Tobias acid) Valid GB/T 21896-2019
GB/T 21896-2008English359 Add to Cart 3 days [Need to translate] 2-Naphthylamine-1, 5-disulfonic acid (Sulphonic Tobias acid) Obsolete GB/T 21896-2008

PDF similar to GB/T 21896-2019


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Basic data

Standard ID GB/T 21896-2019 (GB/T21896-2019)
Description (Translated English) 2-Naphthylamine-1, 5-disulfonic acid (sulfonic Tobias acid)
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard G56
Classification of International Standard 71.100.01; 87.060.10
Word Count Estimation 10,132
Date of Issue 2019-12-31
Date of Implementation 2020-11-01
Older Standard (superseded by this standard) GB/T 21896-2008
Quoted Standard GB/T 601; GB/T 603; GB/T 2381-2013; GB/T 6678-2003; GB/T 6682-2008; GB/T 8170-2008
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration
Summary This standard specifies the requirements, sampling, test methods, inspection rules, and marking, labeling, packaging, transportation and storage of 2-naphthylamine-1,5-disulfonic acid (sulfonated toubic acid). This standard applies to the quality control of 2-naphthylamine-1,5-disulfonic acid products.

GB/T 21896-2019: 2-Naphthylamine-1, 5-disulfonic acid (sulfonic Tobias 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.
2-Naphthylamine-1, 5-disulfonic acid (sulfonic Tobias acid) ICS 71.100.01; 87.060.10 G56 National Standards of People's Republic of China Replaces GB/T 21896-2008 2-naphthylamine-1,5-disulfonic acid (sulfonated tartaric acid) 2019-12-31 release 2020-11-01 implementation State Administration of Market Supervision Published by the National Standardization Administration

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 21896-2008 "2-naphthylamine-1,5-disulfonic acid (sulfonated tartaric acid)". Compared with GB/T 21896-2008, In addition to editorial changes, the main technical changes are as follows. --- Modified the scope of application of the standard (see Chapter 1, Chapter 1 of the.2008 edition); --- Increased CAS number (see Chapter 1); --- Revised the index of the mass fraction (amino value) of 2-naphthylamine-1,5-disulfonic acid for salting out sulfonated toast acid tide products (see Chapter 3,.2008 Chapter 3 of the edition); --- Increased the purity and isomer index of 2-naphthylamine-1,5-disulfonic acid of salted out sulfonated toast acid tide products (see Chapter 3); --- Added requirements for product packaging when sampling (see Chapter 4, Chapter 4 of the.2008 edition); --- Revised the assessment method of appearance (see 5.2, 5.2 of the.2008 version); --- Modified the chromatographic conditions of 2-naphthylamine-1,5-disulfonic acid purity measurement method (see 5.4.4, 5.4.4 of the.2008 edition). This standard was proposed by the China Petroleum and Chemical Industry Federation. This standard is under the jurisdiction of the National Dye Standardization Technical Committee (SAC/TC134). This standard was drafted. Inner Mongolia Xinya Chemical Co., Ltd., Shenyang Shenhua Institute Testing Technology Co., Ltd., and Shenyang Chemical Research Institute Co., Ltd. Company, National Dye Quality Supervision and Inspection Center. The main drafters of this standard. Li Xinyong, Yang Jiemin, Gao Lan, Xue Yan, Pu Aijun, Zhao Zhimin, and Wang Ming. The previous versions of the standards replaced by this standard are. --- GB/T 21896-2008. 2-naphthylamine-1,5-disulfonic acid (sulfonated tartaric acid)

1 Scope

This standard specifies the requirements for 2-naphthylamine-1,5-disulfonic acid (sulfonated tartaric acid), sampling, test methods, inspection rules, signs, labels, Packaging, transportation and storage. This standard applies to the quality control of 2-naphthylamine-1,5-disulfonic acid products. Structural formula. Molecular formula. C10H9NO6S2 Relative molecular mass. 303.31 (according to the international relative atomic mass in.2017) CAS No .. 117-62-4

2 Normative references

The following documents are essential for the application of this document. For dated references, only the dated version applies to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. Preparation of GB/T 601 chemical reagent standard titration solution Preparation of preparations and products used in GB/T 603 chemical reagent test method GB/T 2381-2013 Determination of insoluble matter in dyes and dye intermediates GB/T 6678-2003 General sampling rules for chemical products GB/T 6682-2008 Analytical laboratory water specifications and test methods GB/T 8170-2008 Numerical rounding rules and expression and judgment of limit values

3 Requirements

See Table 1 for the quality requirements of 2-naphthylamine-1,5-disulfonic acid. Table 1 Quality requirements for 2-naphthylamine-1,5-disulfonic acid Item index Sulfuric acid Salting out sulfotoluic acid Dry goods experiment method Article number

1 Appearance

White particles or Off-white particles White powder White particles or White powder 5.2

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