GB/T 24101-2018 English PDF

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GB/T 24101-2018: Limit and determination of 4-aminoazobenzene in dye products
Status: Valid

GB/T 24101: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 24101-2018	279	Add to Cart	3 days	Limit and determination of 4-aminoazobenzene in dye products	Valid
GB/T 24101-2009	399	Add to Cart	3 days	Limit and determination of 4-aminoazobenzene in dye products	Obsolete

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Basic data

Standard ID: GB/T 24101-2018 (GB/T24101-2018)
Description (Translated English): Limit and determination of 4-aminoazobenzene in dye products
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G55
Classification of International Standard: 71.100.01;87.060.10
Word Count Estimation: 14,140
Date of Issue: 2018-12-28
Date of Implementation: 2019-11-01
Older Standard (superseded by this standard): GB/T 24101-2009
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 24101-2018: Limit and determination of 4-aminoazobenzene in dye products

---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.
Limit and determination of 4-aminoazobenzene in dye products ICS 71.100.01; 87.060.10 G55 National Standards of People's Republic of China Replace GB/T 24101-2009 Limitation and determination of 4-aminoazobenzene in dye products Published on.2018-12-28 2019-11-01 implementation State market supervision and administration China National Standardization Administration issued

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 24101-2009 "Limits and determination of 4-aminoazobenzene in dye products", and GB/T 24101-2009 In contrast to the editorial changes, the main technical changes are as follows. --- Added high performance liquid chromatography for the determination of 4-aminoazobenzene (see 4.2). This standard was proposed by the China Petroleum and Chemical Industry Federation. This standard is under the jurisdiction of the National Dyestuff Standardization Technical Committee (SAC/TC134). This standard was drafted. Jiangsu Yabang Dyestuff Co., Ltd., Shenzhen Color Dyeing Technology Co., Ltd., China Chemical Economic Technology Development Center, Shenyang Chemical Research Institute Co., Ltd., National Dyestuff Quality Supervision and Inspection Center. The main drafters of this standard. Pu Aijun, Liu Li, Liang Peiji, Xue Yan, Yang Yanling, Hu Yanbing, Zhou Shuaitian, Liu Mei. The previous versions of the standards replaced by this standard are. ---GB/T 24101-2009. Limitation and determination of 4-aminoazobenzene in dye products Caution - Personnel using this standard should have practical experience in laboratory work. This standard does not address all security issues. use It is the responsibility of the person to take appropriate safety and health measures and to ensure compliance with the conditions set by the relevant national regulations.

1 Scope

This standard specifies the limit requirements and determination methods for 4-aminoazobenzene (see Appendix A) in dye products. This standard applies to the limit and determination of 4-aminoazobenzene in commercial dyes, dye products, dye intermediates and textile printing and dyeing auxiliaries.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 6682-2008 Analytical laboratory water specifications and test methods (ISO 3696.1987, MOD) GB/T 8170-2008 Numerical rounding rules and the representation and determination of limit values

3 requirements

The content of 4-aminoazobenzene (see Appendix A) in dye products should be ≤150mg/kg, among which liquid dyes and paint colors in dye products The limit of the 4-aminoazobenzene of the pulp should be converted according to its solid content.

4 Test methods

4.1 Gas chromatography-mass spectrometry (arbitration method) 4.1.1 Principle The dye sample is reductively cleaved with sodium dithionite in a weakly alkaline medium, and the 4-aminoazo is controlled by controlling the pyrolysis temperature and the cleavage time. The azo bond of benzene is not broken; the 4-aminoazobenzene in the cleavage solution is extracted with a solvent, and after concentration, it is detected by gas chromatography-mass spectrometry. Measured, characteristic ion external standard method for quantification. 4.1.2 Determination method 4.1.2.1 General provisions Unless otherwise specified, only analytically pure reagents and tertiary water as specified in GB/T 6682-2008 are used. Judgment of test results It shall be carried out according to the 4.3.3 repair value comparison method in GB/T 8170-2008. 4.1.2.2 Reagents and solutions 4.1.2.2.1 Sodium chloride. 4.1.2.2.2 Sodium hydroxide solution. 20g/L. 4.1.2.2.3 Acetone. ......

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