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YS/T 903.2-2013 (YST 903.2-2013)

Chinese Standard: 'YS/T 903.2-2013'
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YS/T 903.2-2013English179 Add to Cart Days<=3 Method for chemical analysis of indium scraps. Part 2: Determination of tin content. Iodometric titration YS/T 903.2-2013 Valid YS/T 903.2-2013
YS/T 903.2-2013Chinese14 Add to Cart <=1-day [PDF from Chinese Authority, or Standard Committee, or Publishing House]

   

BASIC DATA
Standard ID YS/T 903.2-2013 (YS/T903.2-2013)
Description (Translated English) Method for chemical analysis of indium scraps. Part 2: Determination of tin content. Iodometric titration
Sector / Industry Nonferrous Metallurgy Industry Standard (Recommended)
Classification of Chinese Standard H66
Classification of International Standard 77.120.99
Word Count Estimation 7,766
Drafting Organization Guangxi Metallurgical Products Quality Supervision and Inspection Station
Administrative Organization National Nonferrous Metals Standardization Technical Committee
Regulation (derived from) Ministry of Industry and Information Technology Bulletin No. 52, 2013; industry standard for filing Notice No. 1 of 2014 (No. 169 overall)
Issuing agency(ies) Ministry of Industry and Information Technology of the People's Republic of China
Summary This standard specifies the determination of the amount of indium tin scrap. This standard applies to the determination of ITO target scrap of tin, measuring range: 2. 00% to 10. 00%.

YS/T 903.2-2013
Method for chemical analysis of indium scraps Part 2. Determination of tin content Iodometric titration.
ICS 77.120.99
H66
People's Republic of China Nonferrous Metals Industry Standard
Methods for chemical analysis of indium scrap
Part 2. Determination of tin content Iodometry
Part 2. Determinationoftincontent-Iodometrictitration
Issued on. 2013-10-17
2014-03-01 implementation
Ministry of Industry and Information Technology of the People's Republic of China released
Foreword
YS/T 903 "chemical analysis of indium scrap" is divided into two parts.
--- Part 1. Determination of the amount of indium EDTA titration;
--- Part 2. Determination of tin content Iodometry.
This section YS/T Part 2 903.
This section drafted in accordance with GB/T 1.1-2009 given rules.
The non-ferrous metal part by the National Standardization Technical Committee (SAC/TC243) centralized.
This section is drafted. Guangxi metallurgical products Quality Supervision, Inspection Station, Guangxi Zhuang Autonomous Region Analysis and Testing Center,
Guilin University of Technology, Liuzhou one hundred tough special Advanced Materials Co., Ltd.
The main drafters of this section. Ye Kaifu, Zhou Sulian, Wuxiang Wu, Xie Tao, Li Yi together, Zhang, He Xiaohu, Huangzhao Min, Gui Luan, Huang Xusheng.
Methods for chemical analysis of indium scrap
Part 2. Determination of tin content Iodometry
1 Scope
YS/T of the provisions of the section 903 determination of the amount of indium tin scrap.
This section applies to the determination of tin in ITO target scrap quantity, measurement range. 2.00% to 10.00%.
2 Method summary
After sodium oxide sample melted in hydrochloric acid medium, with iron and aluminum will be reduced to tetravalent tin divalent tin. Starch as indicator,
Potassium iodate standard solution was titrated to end test solution was light blue, calculate the amount of tin.
3 Reagents
Unless otherwise indicated, this part of the reagents were analytical reagent, the water for the two water.
3.1 hydrochloric acid (ρ = 1.19g/mL).
3.2 sodium peroxide.
3.3 reduced iron.
3.4 potassium iodate.
3.5 potassium iodide.
3.6 sodium hydroxide.
3.7 soluble starch.
3.8 hydrochloride (11).
3.9 hydrochloride (19).
3.10 aluminum (mass fraction ≥99.5%).
3.11 starch solution (5g/L). Weigh 0.5g soluble starch (3.7) and placed in 250mL beaker with a small amount of cold water into a paste, in
Was added with stirring 100mL of hot water, a little boil, add cooled 0.1g sodium (3.6), 3g of potassium iodide (3.5) and shake to dissolve.
The time is now equipped with.
3.12 tin standard solution. Weigh 0.5000g metal tin [w (Sn) ≥99.99%], placed in 250mL beaker, add 60mL hydrochloric acid
(3.1), covered with a watch glass, low heat until completely dissolved, cooled to room temperature, the solution was transferred to 500mL volumetric flask, hydrochloric acid (3.9) dilute
Diluted to volume, and mix. This solution 1mL containing 1.0mg tin.
3.13 potassium iodate standard solution
3.13.1 formulated
Weigh 0.72g potassium iodate (3.4), 9g of potassium iodide (3.5), 0.3g of sodium hydroxide (3.6), placed in 500mL beaker, add
200mL of water, heated until completely dissolved, the solution was filtered with glass wool in 1000mL volumetric flask, dilute with water to volume, and mix.
3.13.2 Calibration
Pipette 25.00mL tin standard solution (3.12) placed in 300mL conical flask, 150mL of hydrochloric acid (3.8), 1g reduced iron
Related standard: YS/T 903.1-2013    YS/T 948-2014
Related PDF sample: GB/T 23513.1-2009    GB/T 23513.5-2009