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YS/T 997.2-2014 English PDF

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YS/T 997.2-2014: Methods for chemical analysis of antimony. doped tin oxide. Part 2: Determination of antimony content. Cerium sulfate titration method
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YS/T 997.2-2014English189 Add to Cart 3 days [Need to translate] Methods for chemical analysis of antimony. doped tin oxide. Part 2: Determination of antimony content. Cerium sulfate titration method Valid YS/T 997.2-2014

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Basic data

Standard ID YS/T 997.2-2014 (YS/T997.2-2014)
Description (Translated English) Methods for chemical analysis of antimony. doped tin oxide. Part 2: Determination of antimony content. Cerium sulfate titration method
Sector / Industry Nonferrous Metallurgy Industry Standard (Recommended)
Classification of Chinese Standard H13
Classification of International Standard 77.120.60
Word Count Estimation 7,752
Date of Issue 10/14/2014
Date of Implementation 4/1/2015
Regulation (derived from) People's Republic of China Ministry of Industry and Information Technology Notice 2014 No. 63; Industry Standard Filing Notice 2014 No. 12 (Overall No. 180)
Issuing agency(ies) Ministry of Industry and Information Technology
Summary This Standard specifies the method for determination of antimony doped tin oxide antimony content. This section applies to the determination of antimony tin oxide doped amount of antimony, the measurement range (by mass) of 0.50% to 20.00%.

YS/T 997.2-2014: Methods for chemical analysis of antimony. doped tin oxide. Part 2: Determination of antimony content. Cerium sulfate titration method


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Methods for chemical analysis of antimony doped tin oxide Part 2. Determination of antimony content Cerium sulfate titration method. ICS 77.120.60 H13 People's Republic of China Nonferrous Metals Industry Standard Antimony-doped tin oxide chemical analysis Part 2. Determination of antimony content Cerium sulfate titration Part 2. Determinationofantimonycontent- Issued on. 2014-10-14 2015-04-01 implementation Ministry of Industry and Information Technology of the People's Republic of China released

Foreword

YS/T 997 "Methods for chemical analysis of antimony-doped tin dioxide," is divided into three parts. --- Part 1. Determination of tin content potassium iodate titration; --- Part 2. Determination of antimony content cerium sulfate titration; --- Part 3. Determination of chlorine content of thiocyanate mercury spectrophotometry. This section YS/T Part 2 997. 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. Liuzhou one hundred tough special Advanced Materials Co., Ltd., Guangxi Zhuang Autonomous Region metallurgical products Quality Supervision, Inspection Station, Guangxi Analysis and Testing Center Zhuang Autonomous Region, Guilin University of Technology, Nanning Abacus detection technology limited liability company. The main drafters of this section. Ye Youming, Lvmin Li, Wei Gang, Huang Xusheng, Deng Hankin, Luo Jun, Huangzhao Min, Ye Kaifu, Zhang Hongyun, Zhou Sulian, Mao Xiangen. Antimony-doped tin oxide chemical analysis Part 2. Determination of antimony content Cerium sulfate titration

1 Scope

YS/T 997 This part specifies the method for determination of antimony doped tin oxide antimony content. This section applies to the determination of antimony tin oxide doped with antimony content measurement range (mass fraction) of 0.50% to 20.00%.

2 Method summary

After sodium oxide sample melted in sulfuric acid, sulfuric acid diamide will pentavalent antimony reduced to trivalent. Hydrazine sulfate excess heat is oxidized The destruction, in hydrochloric acid medium, methyl orange as indicator, at 80 ℃ ~ 90 ℃ cerium sulfate standard titration solution dropwise to the red solution just Good disappear as the end point.

3 Reagents

Unless otherwise noted, the standard reagents were analytical reagent grade, which is GB/T 6682 in the secondary water water. Hydrazine sulfate 3.1. 3.2 sodium peroxide. 3.3 sulfate (ρ = 1.84g/mL). 3.4 hydrochloride (11). 3.5 sulfate (11). 3.6 sulfate (12). 3.7 Antimony standard solution. Weigh 0.5000g metal antimony (mass fraction ≥99.99%), placed in 250mL beaker, add 25mL sulfuric acid (3.3), heated until completely dissolved, remove cooling, 40mL was added sulfuric acid (3.6), shake, heat gently to dissolve the salts, cooled to room temperature, with sulfuric acid (3.6) transferred to 500mL volumetric flask and dilute to volume, and mix. This solution 1mL 1mg containing antimony. 3.8 cerium sulfate standard titration solution. --- Preparation. Weigh 6.08g cerium sulfate [Ce (SO4) 2 · 4H2O] into 1000mL beaker, add 30mL sulfuric acid (3.3), Stir on a hot plate heated gradually warming dissolved into a paste, and oleum take about 20min, remove cooling, 140mL sulfuric acid (3.3), 400mL of water was slowly added and then stirred to dissolve clear, cooled to room temperature, transferred to 1000mL volumetric flask, dilute to volume with water, Mix well. --- Calibration. Pipette 20.00mL antimony standard solution (3.7), placed in 300mL Erlenmeyer flasks, was added 30mL sulfuric acid (3.5), was added Hydrazine sulfate 0.3g (3.1), add 5 to 10 glass beads, fuming sulfuric acid heated to take 5min ~ 10min, remove the cooled, purged with a small amount of water Sidewall, the sidewall along slowly added 40mL of water, shake well, remove the boil, immediately added 30mL of hydrochloric acid (3.4), add two drops of methyl orange indicator (3.9), while maintaining the solution 80 ℃ ~ 90 ℃ temperature titration with cerium sulfate standard solution (3.8) drop to the solution of the red just disappear, that is, end. While doing the blank test. The actual concentration of cerium sulfate standard titration solution according to formula (1).

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