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YS/T 535.9-2009 English PDF

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YS/T 535.9-2009: Chemical analysis methods of sodium fluoride. Part 9: Determination of chloride content. The turbidimetric method
Status: Valid

YS/T 535.9: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
YS/T 535.9-2009English149 Add to Cart 2 days [Need to translate] Chemical analysis methods of sodium fluoride. Part 9: Determination of chloride content. The turbidimetric method Valid YS/T 535.9-2009
YS/T 535.9-2006English199 Add to Cart 2 days [Need to translate] Methods for chemical analysis of sodium fluoride The turbidimetric method for the determination of chloride content Obsolete YS/T 535.9-2006

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Basic data

Standard ID YS/T 535.9-2009 (YS/T535.9-2009)
Description (Translated English) Chemical analysis methods of sodium fluoride. Part 9: Determination of chloride content. The turbidimetric method
Sector / Industry Nonferrous Metallurgy Industry Standard (Recommended)
Classification of Chinese Standard H21
Classification of International Standard 71.060.50
Word Count Estimation 5,598
Date of Issue 2009-12-04
Date of Implementation 2010-06-01
Older Standard (superseded by this standard) YS/T 535.9-2006
Quoted Standard YS/T 535.10-2009
Regulation (derived from) MIIT [2009] No. 66
Issuing agency(ies) Ministry of Industry and Information Technology
Summary This standard specifies the determination of sodium chloride method. This standard applies to the determination of the chlorine content of sodium fluoride. Measuring range (mass fraction): �� 0. 005%.

YS/T 535.9-2009: Chemical analysis methods of sodium fluoride. Part 9: Determination of chloride content. The turbidimetric method


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Chemical analysis methods of sodium fluoride.Part 9. Determination of chloride content.The turbidimetric method ICS 71.060.50 H21 People's Republic of China Nonferrous Metals Industry Standard Replacing YS/T 535.9-2006 Methods for chemical analysis of sodium fluoride Part 9. Determination of chlorine content Turbidity method Posted 2009-12-04 2010-06-01 implementation Ministry of Industry and Information Technology of the People's Republic of China released

Foreword

YS/T 535 "chemical analysis of sodium fluoride" is divided into 10 parts. --- Part 1. Determination of the weight of water in the wet method; --- Part 2. Determination of distillation of fluorine content - thorium nitrate titration volumetric method; --- Part 3. Determination of silicon content - Molybdenum blue spectrophotometric method; --- Part 4. Determination of iron content phenanthroline spectrophotometry; --- Part 5. Determination of soluble sulfate turbidity method; --- Part 6. Determination of carbonate content - Gravimetric method; --- Part 7. Determination of acidity and law; --- Part 8. Water-insoluble content - Gravimetric method; --- Part 9. Determination of chlorine turbidity method; --- Part 10. Preparation and storage of test samples. Part is divided into 9 parts. The partial replacement of YS/T 535.9-2006 (formerly GB/T 8158.9-1987). This part is the "determination of the amount of chlorine fluoride chemical analysis of turbidity Law" YS/T 535.9-2006 revision, and YS/T 535.9- Compared to 2006, an increase of equal precision and quality assurance and control content. The non-ferrous metal part by the National Standardization Technical Committee and centralized. This part of the Fushun Aluminum Co., Ltd., China Nonferrous Metals Industry Institute of Standards Metrology and Quality is responsible for drafting. This part of the Fushun Aluminum Co. drafted. The main drafters of this section. Zhou Yanna Zhang side by side, namely Jubilee. This part of the standard replaces the previous editions are. --- YS/T 535.9-2006 (formerly GB/T 8158.9-1987). Methods for chemical analysis of sodium fluoride Part 9. Determination of chlorine content Turbidity method

1 Scope

This section specifies the determination method of chlorine in sodium fluoride. This section applies to the determination of sodium chloride content. Measurement range (mass fraction). ≥0.005%.

2 Normative references

The following documents contain provisions which, through reference in this text, constitute provisions of this part. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this section, however, encourage the parties to this part of the research agreement Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this section. YS/T 535.10-2009 Methods for chemical analysis of sodium fluoride - Part 10. Sample preparation and storage

3 Method summary

In the presence of boric acid, turbidity by precipitation of silver chloride produced was measured.

4 Reagents

4.1 nitric acid (ρ = 1.40g/mL). 4.2 boric acid solution (40g/L). 4.3 silver nitrate solution (0.1mol/L). 4.4 chlorine standard solution The 14.10mL hydrochloric acid solution (0.100mol/L) moved into 1L volumetric flask, dilute with water to volume, and mix. This solution containing 1mL 0.050mg chlorine.

5 Instruments

Spectrophotometer.

6 Sample

The specimen shall conform YS/T 535.10-2009 4.2 requirements.

7 Procedure

7.1 Sample 7.2 Determination of the number of Two independent measurement and averaged. 7.3 blank test Along with sample blank test. 7.4 Determination 7.4.1 The sample (7.1) into a 100mL volumetric flask, add water 60mL and 25mL boric acid solution (4.2) and shaken till it dissolves with

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