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YS/T 1157.4-2016 English PDF

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YS/T 1157.4-2016: Methods for chemical analysis of Crude Cobalt hydroxide—Part 4: Determination of manganese content—Potentiometric titration method
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YS/T 1157.4-2016English139 Add to Cart 3 days [Need to translate] Methods for chemical analysis of Crude Cobalt hydroxide—Part 4: Determination of manganese content—Potentiometric titration method Valid YS/T 1157.4-2016

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Basic data

Standard ID YS/T 1157.4-2016 (YS/T1157.4-2016)
Description (Translated English) Methods for chemical analysis of Crude Cobalt hydroxide��Part 4: Determination of manganese content��Potentiometric titration method
Sector / Industry Nonferrous Metallurgy Industry Standard (Recommended)
Classification of Chinese Standard H13
Classification of International Standard 77.150.70
Word Count Estimation 6,694
Date of Issue 2016-07-11
Date of Implementation 2017-01-01
Regulation (derived from) Notice of the Ministry of Industry and Information Technology (2016 No. 37)
Issuing agency(ies) Ministry of Industry and Information Technology
Summary This standard specifies the method for determining the amount of manganese in crude cobalt hydroxide.

YS/T 1157.4-2016: Methods for chemical analysis of Crude Cobalt hydroxide—Part 4: Determination of manganese content—Potentiometric titration method


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Methods for chemical analysis of Crude Cobalt hydroxide-Part 4. Determination of manganese content-Potentiometric titration method ICS 77.150.70 H13 People's Republic of China non-ferrous metal industry standards Crude cobalt hydroxide chemical analysis method Part 4. Determination of manganese content Potentiometric titration Methods for chemical analysis of Crude Citrobydroxide Part 4.Determinationofmanganesecontent 2016-07-11 released 2017-01-01 implementation Ministry of Industry and Information Technology of the People's Republic of China

Foreword

YS/T 1157 "crude cobalt hydroxide chemical analysis method" is divided into the following four parts. --- Part 1. Determination of cobalt content potentiometric titration; --- Part 2. Determination of nickel, copper, manganese, iron, lead, zinc, arsenic and cadmium; Inductively coupled plasma atomic emission spectrometry; --- Part 3. Determination of calcium and magnesium content Flame atomic absorption spectrometry and inductively coupled plasma atomic emission spectrometry; --- Part 4. Determination of manganese content Potentiometric titration. This section is the fourth part of YS/T 1157. This section drafted in accordance with GB/T 1.1-2009 given rules. This part of the National Non-ferrous Metals Standardization Technical Committee (SAC/TC243) and focal point. This part of the drafting unit. Jinchuan Group Co., Ltd., Zhejiang Huayou Cobalt Co., Ltd., Green United States Co., Ltd., Zhejiang Yinglian Technology Co., Ltd., Yingde Jia Na Metal Technology Co., Ltd. The main drafters of this section. Xie Baihua, Fan Juanhui, Zhou Liang, Li Ju, Luo Yurong, Lin Xiuying, Jiang Xiaochun, Yu Shengjie, Ma Yuping, Pan Meirong, Wu Chi Chun, Luo Yueying. Crude cobalt hydroxide chemical analysis method Part 4. Determination of manganese content Potentiometric titration

1 Scope

YS/T 1157 provisions of this part of the crude cobalt hydroxide in the determination of manganese content. This section applies to the determination of crude cobalt hydroxide in manganese content, the determination of 2.50% ~ 12.00%.

2 method summary

After the sample was decomposed by hydrochloric acid, the saturated solution of sodium pyrophosphate, the pH was adjusted to 6 to 7, titration with potassium permanganate standard titration solution to Sudden jump in potential is the end.

3 reagent

Unless otherwise stated, only reagents identified as analytical grade were used in the analysis. Water used was laboratory grade 3 water or water of comparable purity. 3.1 Hydrochloric acid (p = 1.19 g/mL). 3.2 Sulfuric acid (p = 1.84 g/mL). 3.3 Sulfuric acid (1 4). 3.4 Ammonia (1 1). 3.5 Saturated sodium pyrophosphate solution Weigh 300g of sodium pyrophosphate in a 1000mL beaker and add 900mL of pure water. Use after 24h 3.6 manganese standard solution Weigh 1.0000g of metal manganese (w ≥ 99.95%) in 400mL beaker, add 20mL sulfuric acid (3.3), heated Solution to clear. Cool, move into 1000mL volumetric flask, dilute to the mark with pure water and mix well. 1 mL of this solution contains 1 mg of manganese. 3.7 potassium permanganate standard stock solution [c (1/5KMnO4) ≈ 0.1mol/L]. Weigh 3.20g potassium permanganate dissolved in 1000mL of pure water Medium, boiled 1h, cooled, placed for 7 days. With 3 ρ --- manganese standard solution mass concentration in milligrams per milliliter (mg/mL); V1 --- Remove the volume of manganese standard solution, in milliliters (mL);

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