| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| YS/T 807.5-2012 | English | 279 |
Add to Cart
|
3 days [Need to translate]
|
Chemical analysis methods of aluminum hardeners. Part 5: Determination of zirconium content. EDTA titrimetric method
| Obsolete |
YS/T 807.5-2012
|
PDF similar to YS/T 807.5-2012
Basic data | Standard ID | YS/T 807.5-2012 (YS/T807.5-2012) | | Description (Translated English) | Chemical analysis methods of aluminum hardeners. Part 5: Determination of zirconium content. EDTA titrimetric method | | Sector / Industry | Nonferrous Metallurgy Industry Standard (Recommended) | | Classification of Chinese Standard | H12 | | Classification of International Standard | 77.120.10 | | Word Count Estimation | 7,735 | | Regulation (derived from) | Ministry of Industry and Information Technology Bulletin No. 55 of 2012; industry standard filing Notice 2013 No. 1 (Total No. 157); | | Issuing agency(ies) | Ministry of Industry and Information Technology | | Summary | This standard specifies the aluminum alloy with zirconium content determination. This standard applies to the aluminum alloy of zirconium content. Measuring range: 2. 5% ~ 18. 0%. | YS/T 807.5-2012: Chemical analysis methods of aluminum hardeners. Part 5: Determination of zirconium content. EDTA titrimetric method
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Chemical analysis methods of aluminum hardeners.Part 5. Determination of zirconium content.EDTA titrimetric method
ICS 77.120.10
H12
People's Republic of China Nonferrous Metals Industry Standard
Intermediate aluminum alloys -
Part 5. Determination of zirconium content
EDTA titration
Part 5. Determinationofzirconiumcontent-
Issued on. 2012-11-07
2013-03-01 implementation
Ministry of Industry and Information Technology of the People's Republic of China released
Foreword
YS/T 807-2012 "aluminum master alloy chemical analysis method" is divided into 14 parts.
--- Part 1. Determination of iron content dichromate method;
--- Part 2. Determination of manganese content Potassium periodate spectrophotometric method;
--- Part 3. Determination of nickel by titration with EDTA;
--- Part 4. Determination of chromium content ammonium persulfate oxidation - ammonium ferrous sulfate titration;
--- Part 5. Determination of zirconium content EDTA titration;
--- Part 6. Determination of boron ion selective electrode method;
--- Part 7. Determination of beryllium content Eriochrome cyanide blue R spectrophotometry;
--- Part 8. Determination of antimony content Potassium iodide spectrophotometry;
--- Part 9. Determination of bismuth content of potassium iodide spectrophotometry;
--- Part 10. Determination of potassium content by flame atomic absorption spectrometry;
--- Part 11. Determination of sodium content by flame atomic absorption spectrometry;
--- Part 12. Determination of copper content of sodium thiosulfate titration;
--- Part 13. Determination of vanadium content ammonium ferrous sulfate titration;
--- Part 14. Determination of strontium EDTA titration.
This section YS/T Section 5807 of.
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 responsible for drafting units. Aluminum Corporation of China Zhengzhou Research Institute, China Nonferrous Metals Industry Quality Standards and Metrology Institute
The study.
Participated in the drafting of this section. Guangzhou Nonferrous Metal Research Institute, Northeast Light Alloy limited liability company.
The main drafters of this section. Zhang Jin, Dai Fengying, Portugal Huang Ying, Zhou Bing, Zhang Jie, Dong Xiaolin, Shi Lei, Zhang Yuan grams.
Intermediate aluminum alloys -
Part 5. Determination of zirconium content
EDTA titration
Warning --- personnel should use this standard regular laboratory work experience. This standard does not point out all possible security asked
question. Users have the responsibility to take appropriate safety and health practices and to ensure compliance with the conditions relevant national regulations.
1 Scope
This section YS/T 807 specifies the method for determination of aluminum alloy with zirconium content.
This section applies to the determination of aluminum alloy with zirconium content. Measuring range. 2.5% to 18.0%.
2 Method summary
Samples with hydrochloric acid and hydrogen peroxide dissolved in acid medium, the role of zirconium and EDTA to form a stable complex reaction quantitatively.
With methyl thymol blue indicator, boiled in 0.8mol/L ~ 1.5mol/L HCl medium and hot titrated.
3 Reagents
Unless otherwise indicated in the analysis using only the gifted class pure reagents and sub-boiling distilled water or potassium.
3.1 Hydrogen peroxide (ρ = 1.10g/mL).
3.2 hydrochloric acid (ρ = 1.19g/mL).
3.3 hydrochloride (11).
3.4 stannous chloride solution (100g/L). Weigh 5g stannous chloride in 250mL beaker, add 15mL of hydrochloric acid (3.2), micro Rerong
Diluted solution was cooled with water to 50mL, using now.
3.5 methyl thymol blue indicator. 1g methyl thymol blue indicator and 100g sodium chloride mixed and ground into a powder, stored in brown mill
Jar.
3.6 mandelic acid solution (150g/L), filtered use.
3.7 mandelic acid washing solution. 1000mL 20mL aqueous solution containing hydrochloric acid (3.2) and 50g mandelic acid. Use filtered.
3.8 Zirconium standard solution (2mg/mL).
3.8.1 preparation. Weigh 3.53g of zirconium oxychloride (ZrOCl2 · 8H2O) into 400mL beaker was added 100mL of water and 50mL
Hydrochloric acid (3.3) was dissolved and transferred to 500mL volumetric flask, dilute with water to volume, and mix. 1mL solution containing 2mg zirconium.
3.8.2 Calibration. Pipette 25.00mL zirconium standard solution (3.8.1) in 300mL beaker, was added 30mL of hydrochloric acid (3.2), heated to near
Boiling, add 50mL mandelic acid solution (3.6), stir, placed in a thermostatic water bath 80 ℃, the heat for 30min, then cooled. use
Medium-speed filter paper, washed with mandelic acid solution (3.7) Wash the beaker, all transferred to the precipitate on the filter paper with mandelic acid washing solution (3.7)
The precipitate was washed 6-8 times, and the filter paper and precipitate constant weight has been placed in a platinum crucible, drying, ashing, and then placed in a furnace at 1000 ℃ burning 2h ~
3h, removed, placed in the dryer to cool after 30min weighed.
3.8.3 Calculation. according to formula (1) calculate the mass concentration of the zirconium standard solution.
ρ0 =
m0 × 0.7403
V0
(1)
|