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GB/T 23852-2009: Industrial analysis thiocyanate
Status: Valid
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| GB/T 23852-2009 | English | 279 |
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Industrial analysis thiocyanate
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GB/T 23852-2009
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Basic data | Standard ID | GB/T 23852-2009 (GB/T23852-2009) | | Description (Translated English) | Industrial analysis thiocyanate | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G10 | | Classification of International Standard | 71.060.01 | | Word Count Estimation | 12,181 | | Date of Issue | 2009-05-18 | | Date of Implementation | 2010-02-01 | | Regulation (derived from) | PRC National Standard Approval Announcement 2009 No.6 (Total No.146) | | 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 industrial ammonium thiocyanate, industrial and industrial potassium thiocyanate, sodium thiocyanate thiocyanate content, iron content, water- insoluble matter, volatile content at 105��C, halide content, sulfide content, heavy metal content, pH value, sulfate content, analysis methods ignition residue content (industrial and industrial potassium thiocyanate, sodium thiocyanate in) salt content. This standard applies to industrial thiocyanate products, including industrial ammonium thiocyanate, industrial potassium thiocyanate, industrial sodium thiocyanate. | GB/T 23852-2009: Industrial analysis thiocyanate---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.
Industrial analysis thiocyanate
ICS 71.060.01
G10
National Standards of People's Republic of China
Industrial analysis thiocyanate
Posted 2009-05-18
2010-02-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
The standard proposed by China Petroleum and Chemical Industry Association.
This standard by the National Standardization Technical Committee chemical inorganic chemicals Club (SAC/TC63/SC1) centralized.
Drafting of this standard. Shandong CIQ, CNOOC Tianjin Chemical Research & Design Institute.
The main drafters of this standard. Wang Jun, Wang Yan.
This standard is the first release.
Industrial analysis thiocyanate
1 Scope
This standard specifies the industrial ammonium thiocyanate, sodium thiocyanate industry and industrial potassium thiocyanate thiocyanate content, iron content, containing water insoluble
The amount of volatile content at 105 ℃, the halide content, sulfide content, heavy metal content, pH, sulfate content, burn residue content and
(Industrial sodium thiocyanate and potassium thiocyanate industry) Analysis salt content.
This standard applies to industrial thiocyanate products, including industrial ammonium thiocyanate, potassium thiocyanate industry, industrial sodium thiocyanate.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
General Method GB/T 3049-2006 industrial chemicals determination of iron content 1,10 Philippines spectrophotometry method
(ISO 6685. 1982, IDT)
GB/T 6682-2008 analytical laboratory use specifications and test methods (ISO 3696. 1987, MOD)
Preparation of standard titration solution of HG/T 3696.1 inorganic chemical products, chemical analysis
Preparation of HG/T 3696.2 inorganic chemical products, chemical analysis of impurity standard solution
Preparations of HG/T 3696.3 inorganic chemical products, chemical analysis
3 Safety Tips
Reagents used in this test method has toxic or corrosive, be careful when operating! Should immediately splashed on the skin, such as
Rinse water, severe cases should be treated immediately.
4 General Provisions
This standard reagents and water, did not indicate when the other requirements, refer to analytically pure reagents and GB/T 6682-2008 stipulated three
Grade water. Test with the standard titration solution, impurity standard solution, preparations and products, did not indicate when the other requirements, according
HG/T 3696.1, HG/T 3696.2, the provisions of HG/T 3696.3 of preparation.
5 Determination of thiocyanate content
5.1 Method summary
In acidic solution was added an excess of silver nitrate, silver thiocyanate is generated, then ammonium ferric sulfate as indicator, titrate with ammonium thiocyanate standard solution
Liquid back titration.
5.2 Reagents
5.2.1 95% ethanol;
5.2.2 nitric acid solution. 1 + 9;
5.2.3 solution of ammonium ferric sulfate. 50g/L;
5.2.4 standard silver nitrate titration solution. Ba (AgNO3) ≈0.1mol/L;
5.2.5 Ammonium thiocyanate standard titration solution. Ba (NH4SCN) ≈0.1mol/L.
5.3 Analysis Steps
It weighs about 105 ℃ ± 3g was constant quality crystal sample to 2 ℃ bake about 6g or liquid sample, accurate to 0.0002g, placed
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