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GB/T 13025.4-2012: General test method in salt industry -- Determination of insoluble matter
Status: Valid GB/T 13025.4: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 13025.4-2012 | English | 149 |
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General test method in salt industry -- Determination of insoluble matter
| Valid |
GB/T 13025.4-2012
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| GB/T 13025.4-1991 | English | 199 |
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General test method in salt industry--Determination of insoluble matter
| Obsolete |
GB/T 13025.4-1991
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Basic data | Standard ID | GB/T 13025.4-2012 (GB/T13025.4-2012) | | Description (Translated English) | General test method in salt industry -- Determination of insoluble matter | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | X35 | | Classification of International Standard | 71.060.50 | | Word Count Estimation | 5,592 | | Older Standard (superseded by this standard) | GB/T 13025.4-1991 | | Quoted Standard | GB/T 6682-2008 | | Regulation (derived from) | National Standards Bulletin No. 13 of 2012 | | 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 salt products and salt chemical products Determination of matter insoluble in water. This standard applies to salt products and salt chemical products Determination of water insoluble. | GB/T 13025.4-2012: General test method in salt industry -- Determination of insoluble matter---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.
ICS71.060.50
X35
National Standards of People's Republic of China
Replacing GB/T 13025.4-1991
General test method in salt industry - Determination of insoluble matter
Issued on. 2012-06-29 2012-12-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This section of the standard method of series universal testing in salt industry, which is currently divided into the following series of standards section 13 and, if necessary, other test
Standard test method will complement the development of the follow-up work.
--- GB/T 13025.1 General test method in salt industry - Determination of particle size;
--- GB/T 13025.2 General test method in salt industry - Determination of whiteness;
--- GB/T 13025.3 General test method in salt industry - Determination of moisture content;
--- GB/T 13025.4 General test method in salt industry - Determination of insoluble matter;
--- GB/T 13025.5 General test method in salt industry Determination of chloride ion;
--- GB/T 13025.6 General test method in salt industry - Determination of calcium and magnesium;
--- GB/T 13025.7 General test method in salt industry - Determination of iodine;
--- GB/T 13025.8 General test method in salt industry - Determination of sulfate;
--- GB/T 13025.9 General test method in salt industry - Determination of lead;
--- GB/T 13025.10 General test method in salt industry - Determination of ferrous cyanide;
--- GB/T 13025.11 General test method in salt industry - Determination of Fluoride;
--- GB/T 13025.12 General test method in salt industry - Determination of barium;
--- GB/T 13025.13 General test method in salt industry - Determination of arsenic.
This is Part 4 GB/T 13025 in.
This section based on GB/T 1.1-2009 of rules for the preparation.
This Part replaces GB/T 13025.4-1991 "General test method in salt industry - Determination of insoluble matter," this part of the series
Series modifications.
This part made by the China Light Industry Federation, the National Salt Industry Standardization Technical Committee centralized.
This section drafted by. National Maritime Center Salt Lake standardization.
The main drafters of this section. Tong Yun Kun, Huo Jun Fei.
This section previously issued as follows.
--- GB/T 13025.4-1991.
General test method in salt industry - Determination of insoluble matter
1 Scope
This standard specifies the method for determination of the product salt water insoluble salts and chemical products.
This standard applies to the determination of salt products and salt chemical products in water-insoluble matter.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated edition applies to this article
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 6682-2008 analytical laboratory use specifications and test methods
Principle 3
Samples were dissolved in water, glass crucible after filtration, the residue was dried and weighed, measured insoluble content.
4 Reagents
Unless otherwise indicated in the analysis using only recognized as analytical reagents and GB/T 6682-2008 specified tertiary water.
5 Instruments
5.1 Ovens. to adjust the temperature of 110 ℃ ± 2 ℃.
5.2 No. 3 glass crucible.
Step 6 Analysis
Weigh 10g crushed to 2mm or less homogeneous samples, weighing accuracy 0.001g, placed in 400mL beaker, add 150mL water,
Stirring constantly heated to near boiling the sample is completely dissolved, after 10min standing, with 110 ℃ was dried and weighed pad quantitative filter paper
Glass crucible by suction, pouring the solution, and the insolubles washed 2 to 3 times, and then the insolubles were all transferred to a crucible, and the filtrate was washed until no chloride ion
Promoter (test with silver nitrate solution). Rinse the outer wall of the crucible, the crucible was placed in a thermostatic oven, the temperature was raised to 110 deg.] C, drying was continued 1h, remove,
Desiccator, cooled to room temperature and weighed. After each drying 30min weighing until the difference between the two depends on weighing no more than 0.0002g
To constant weight.
7 Results Calculation
Water-insoluble content in the sample to the mass fraction ω and its value as a percentage (%) expressed by the formula (1).
ω = m1-m2m × 100%
(1)
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