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YS/T 1028.1-2015

Search Result of Chinese Standard: 'YS/T 1028.1-2015'
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YS/T 1028.1-2015English139 Add to Cart Days<=3 Methods for chemical analysis of lithium iron phosphate. Part 1: Determination of total iron content. Titanium trichloride reduction potassium dichromate titration methods Valid YS/T 1028.1-2015
YS/T 1028.1-2015Chinese16 Add to Cart <=1-day [PDF from Chinese Authority, or Standard Committee, or Publishing House]

   
Detail Information of YS/T 1028.1-2015; YS/T1028.1-2015
Description (Translated English): Methods for chemical analysis of lithium iron phosphate. Part 1: Determination of total iron content. Titanium trichloride reduction potassium dichromate titration methods
Sector / Industry: Nonferrous Metallurgy Industry Standard (Recommended)
Classification of Chinese Standard: H71
Classification of International Standard: 77.120.99
Word Count Estimation: 5,57
Date of Issue: 2015-04-30
Date of Implementation: 2015-10-01
Drafting Organization: Bump circulation Guangdong Science and Technology Co., Ltd.
Administrative Organization: National non-ferrous metals Standardization Technical Committee
Regulation (derived from): Ministry of Industry and Information Technology Announcement (2015 No. 28)
Proposing organization: National Non-Ferrous Metals Standardization Technical Committee (SAC/TC 243)
Issuing agency(ies): Ministry of Industry and Information Technology of the People's Republic of China
Summary: This Standard specifies the method for the determination of total iron phosphate lithium iron. This section applies to the determination of total iron phosphate lithium iron. Measuring range: 28% to 36%.

YS/T 1028.1-2015
Methods for chemical analysis of lithium iron phosphate Part 1: Determination of total iron content Titanium trichloride reduction potassium dichromate titration methods.
ICS 77.120.99
H71
People's Republic of China Nonferrous Metals Industry Standard
Methods for chemical analysis of lithium iron phosphate
Part 1: Determination of total iron
Titanium trichloride reduction dichromate method
Methodsforchemicalanalysisoflithiumironphosphate-
Part 1: Determinationoftotalironcontent-
Titaniumtrichloridereductionpotassiumdichromatetitrationmethods
Issued on: 2015-04-30
2015-10-01 implementation
Ministry of Industry and Information Technology of the People's Republic of China released
Foreword
YS/T 1028 "lithium iron phosphate chemical analysis methods," including a total of five sections:
--- Part 1: Determination of total iron content of titanium trichloride reduction dichromate method;
--- Part 2: Determination of the amount of lithium flame photometry;
--- Part 3: Determination of phosphorus content Quinoline phosphomolybdate gravimetric method;
--- Part 4: Determination of carbon content in the high-frequency combustion infrared absorption method;
--- Part 5: calcium, magnesium, zinc, copper, lead, chromium, sodium, aluminum, nickel, cobalt, manganese content - Inductively coupled plasma atomic emission
Spectroscopy.
This section YS/T 1028 Part 1.
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) and focal points.
Drafting this Part: Bump cycle Guangdong Technology Co., Ltd., Yantai Zhuo Battery Materials Co., Ltd., Sichuan Tianqi Lithium Industries shares have
Limited.
The main drafters of this section: Lichang Dong, Yu Haijun, Xieying Hao, FUNCTIONALIS wide Yang, Li Jinglan, Yangshu Long, Yao Li, HE Xia.
Methods for chemical analysis of lithium iron phosphate
Part 1: Determination of total iron
Titanium trichloride reduction dichromate method
1 Scope
YS/T 1028 This section specifies the determination of lithium iron phosphate in the total iron.
This section applies to the determination of total iron phosphate lithium iron. Measuring range: 28% to 36%.
2 Method summary
After dissolving the sample in hydrochloric acid, sodium tungstate as an indicator, with a small amount of titanium trichloride reduction of ferric to ferrous iron to generate "tungsten blue" to
The natural oxygen in the air oxidation of an excess of trivalent titanium in sulfuric acid - phosphoric acid, sodium diphenylamine sulfonate as indicator with standard potassium dichromate solution
Titration of divalent iron.
3 Reagents and materials
3.1 hydrochloride (11).
3.2 sulfuric acid - phosphoric acid mixed solution: 15mL sulfuric acid (ρ≈1.84g/mL) was slowly added to 70mL water, and 15mL phosphorus cooled
Acid (ρ≈1.69g/mL) and mix.
3.3 titanium trichloride solution (114): of 2mL titanium trichloride solution (about 15% titanium trichloride solution) was diluted with hydrochloric acid (15)
To 30mL.
3.4 Potassium dichromate standard titration solution [c (
6K2Cr2O7
) = 0.0500mol/L]: weigh 2.4516g baseline potassium dichromate (pre-warp
After drying 140 ℃ ~ 150 ℃ 2h, placed in a desiccator, cool to room temperature) was dissolved in water and transferred to 1000mL volumetric flask, diluted with water
To the mark, and mix.
3.5 sodium tungstate indicator solution (250g/L): Weigh 25g of sodium tungstate dissolved in an appropriate amount of water, phosphoric acid diluted with 5mL water to
100mL, and mix.
3.6 diphenylamine sulfonate indicator solution (5g/L): Weigh 0.50g of sodium diphenylamine dissolved in water and diluted with water to 100mL, mix
Uniform, stored in a brown bottle.
4 Sample
The sample size should be less than 0.10mm.
Step 5 Analysis
5.1 Sample
Weigh 4.00g sample, accurate to 0.0001g.
Related standard:   YS/T 1028.2-2015  YS/T 1028.3-2015
   
 
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