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GB/T 21879-2015: Water-soluble dyes -- Determination of solubility -- Test of filter papers
Status: Valid GB/T 21879: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 21879-2015 | English | 129 |
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Water-soluble dyes -- Determination of solubility -- Test of filter papers
| Valid |
GB/T 21879-2015
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| GB/T 21879-2008 | English | 199 |
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2 days [Need to translate]
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Water-soluble dyes -- Determination of solubility -- Drop test of filter papers
| Obsolete |
GB/T 21879-2008
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PDF similar to GB/T 21879-2015
Basic data | Standard ID | GB/T 21879-2015 (GB/T21879-2015) | | Description (Translated English) | Water-soluble dyes -- Determination of solubility -- Test of filter papers | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G55 | | Classification of International Standard | 71.100.01; 87.060.10 | | Word Count Estimation | 6,659 | | Date of Issue | 2015-05-15 | | Date of Implementation | 2015-12-01 | | Older Standard (superseded by this standard) | GB/T 21879-2008 | | Quoted Standard | GB/T 1914-2007; GB/T 2374-2007; GB/T 6682-2008 | | Regulation (derived from) | National Standard Announcement 2015 No. 15 | | 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 | | Summary | This Standard specifies the point of the filter paper method for determining the solubility of water-soluble dyes. This Standard applies to the determination of the solubility of water-soluble dyes. | GB/T 21879-2015: Water-soluble dyes -- Determination of solubility -- Test of filter papers---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.
Water-soluble dyes. Determination of solubility. Test of filter papers
ICS 71.100.01; 87.060.10
G55
National Standards of People's Republic of China
Replacing GB/T 21879-2008
Water-soluble dye solubility measurement point filter paper method
Issued on. 2015-05-15
2015-12-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
This standard replaces GB/T 21879-2008 "water-soluble dye solubility measurement point filter paper method" and GB/T 21879-2008
Compared to, in addition to editorial changes outside the main technical changes are as follows.
--- Modify the scope of representation (see Chapter 1, Chapter 1 of the 2008 edition);
--- Increase the solubility of the sub-file principle (see 6.1);
--- Modify the filter paper drip formulation and evaluation (see 6.3, 6.4, 6.2, 6.3, 2008 edition).
The standard proposed by China Petroleum and Chemical Industry Association.
This standard by the National Standardization Technical Committee Dye (SAC/TC134) centralized.
This standard was drafted. Zhe Jiang Keyong Chemical Co., dye State Quality Supervision and Inspection Center, Shenyang Chemical Research Institute Co., Ltd.
The main drafters of this standard. Wangren Liang, Dong Zhongsheng, Liuni Ping, Ji Qin Lan, Wang Xiaohong.
This standard replaces the standards previously issued as follows.
--- GB/T 21879-2008.
Water-soluble dye solubility measurement point filter paper method
1 Scope
This standard specifies the point filter paper method for determining the solubility of water-soluble dyes.
This standard applies to the determination of the solubility of water-soluble dyes.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 1914-2007 Chemical analysis filter paper
General conditions GB/T 2374-2007 Determination of dyes provisions
Laboratory use specifications and test methods GB/T 6682-2008 Analysis
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
Solubility solubility
At a certain temperature and pressure, the material in a given amount of solvent to dissolve the maximum amount referred to solubility.
Principle 4
Under certain volume and a certain temperature conditions, water-soluble dye under normal pressure is dissolved in water quantity, that is, the solubility of the dye to
in g/L.
5 Equipment and Materials
Equipment and materials shall comply with the relevant provisions of GB/T 2374-2007 in Chapter 4; test water should comply with GB/T 6682-2008
The three water requirements.
a) high glass beaker. Capacity 150mL;
b) constant temperature water bath;
c) mercury thermometers. 0 ℃ ~ 100 ℃;
d) straight scale straw. Capacity 1mL;
e) filter paper. φ110mm speed qualitative filter paper, shall comply with the relevant provisions of GB/T 1914-2007 in;
f) temperature-controlled magnetic stirrer.
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