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GB/T 33054-2016: Determination of content of sodium sulfide in sulphur dye products
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 33054-2016 | English | 119 |
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Determination of content of sodium sulfide in sulphur dye products
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GB/T 33054-2016
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Basic data | Standard ID | GB/T 33054-2016 (GB/T33054-2016) | | Description (Translated English) | Determination of content of sodium sulfide in sulphur 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 | 6,654 | | Date of Issue | 2016-10-13 | | Date of Implementation | 2017-05-01 | | Regulation (derived from) | National Standard Notice No.1716 of 2016 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | GB/T 33054-2016: Determination of content of sodium sulfide in sulphur 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.
Determination of content of sodium sulfide in sulphur dye products
ICS 71.100.01; 87.060.10
G55
National Standards of People's Republic of China
Determination of Sodium Sulfide Content in Sulfide Dye Products
2016-10-13 released
2017-05-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
China National Standardization Management Committee released
Foreword
This standard is drafted in accordance with the rules given in GB/T 1.1-2009.
This standard is proposed by the China Petroleum and Chemical Industry Association.
This standard is under the jurisdiction of the National Dye Standardization Technical Committee (SAC/TC134).
The drafting unit. Zhejiang Changzheng Chemical Co., Ltd., Shenzhen City, the color dye Technology Co., Ltd., Shenyang Chemical Industry Research Institute Co., Ltd.
Division, the State Dye Quality Supervision and Inspection Center.
The main drafters of this standard. Gao Guoxin, Wang Yong, Liang Yishen, Wu Jiuying, Shen Yijiong.
Determination of Sodium Sulfide Content in Sulfide Dye Products
WARNING - Personnel using this standard should have practical experience in formal laboratory work. This standard does not indicate all possible security questions
question. It is the responsibility of the user to take appropriate safety and health measures and to ensure compliance with the conditions set forth in the relevant national regulations.
1 Scope
This standard specifies the determination of sodium sulfide content in sulfur dyes.
This standard is applicable to the determination of sodium sulfide in sulfide dyes.
2 normative reference documents
The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article
Pieces. For undated references, the latest edition (including all modifications) applies to this document.
Preparation of standard titration solution for GB/T 601 chemical reagents
Preparation of preparations and preparations for use in the test methods for chemical reagents GB/T 603
GB/T 6682 Analytical laboratory water specifications and test methods
Representation and Judgment of Numerical Correction Rule and Limit Value in GB/T 8170-2008
General rules for potentiometric titration of chemical reagents GB/T 9725-2007
3 principle
Ferrous sulfate and sodium sulfide react to form ferrous sulfide precipitates with potentials at the end of the reaction. Using potentiometric titration, with sulfuric acid
Iron standard titration solution titration of the vulcanized dye measurement solution, according to the consumption of ferrous sulfate standard titration solution volume calculated sulfur dyes
Sodium sulfide content. The reaction equation is.
Na2S FeSO4 = FeS ↓ Na2SO4
4 reagents and solutions
Unless otherwise specified, only the reagents identified as analytical reagents and the tertiary water specified in GB/T 6682 are used. Standard titration used in the test
Solution, indicator, in the absence of other requirements, according to GB/T 601 and GB/T 603 provisions of the preparation and calibration.
Ferrous sulfate standard titration solution. c (FeSO4) = 0.1mol/L, preparation and calibration see Appendix A.
5 instruments and equipment
The equipment and equipment shall meet the following requirements.
a) analysis of the balance, the volume is not greater than 0.0001g;
b) acidity meter, the accuracy of ± 0.02pH units;
c) potentiometer with an accuracy of ± 2mV;
d) glass composite electrode;
e) magnetic stirrer;
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