ISO 2829:1973
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Aluminium oxide primarily used for the production of aluminium — Determination of phosphorus content — Reduced phosphomolybdate spectrophotometric method
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English, French
01-12-1973
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Applicable to products having phosphorus contents of more than 0.0005 % (m/m). Preparation of a solution from a test portion by alkaline fusion either with a mixture of sodium carbonate and borid or of sodium carbonate and sodium tetraborate. Dissolution of the cooled molten mass in nitric acid and adjustment of an appropriate aliquot portion to pH 2. Formation of a phosphomolybdic complex and extraction by 2-methylpropan-1-ol in a sulphuric acid medium. Reduction of the complex by thin(II) chloride in the organic phase and spectrophotometric measurement of the reduced complex at a wavelength of about 730 nm. Has also been approved by the IUPAC.
| DevelopmentNote |
Also numbered as BS 4140-18(1986) (07/2005)
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| DocumentType |
Standard
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| Pages |
3
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| ProductNote |
This standard also referes to ISO/R 804
|
| PublisherName |
International Organization for Standardization
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| Status |
Current
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| Standards | Relationship |
| NBN T 03 419 : 1983 | Identical |
| BS 4140-8:1986 | Methods of test for aluminium oxide Determination of absolute density using a pyknometer |
| BS 4140-9:1986 | Methods of test for aluminium oxide Measurement of the angle of repose |
| BS 4140-13:1986 | Methods of test for aluminium oxide Preparation of sample solution by treatment with hydrochloric acid under pressure |
| BS 4140-6:1980 | Methods of test for aluminium oxide Determination of titanium content |
| BS 4140-4:1986 | Methods of test for aluminium oxide Preparation of sample solution by alkaline fusion |
| BS 4140-1:1986 | Methods of test for aluminium oxide Preparation and storage of test samples |
| BS 4140-16:1986 | Methods of test for aluminium oxide Determination of zinc content by flame atomic absorption |
| BS 4140-7:1986 | Methods of test for aluminium oxide Determination of iron content |
| BS 4140-22:1980 | Methods of test for aluminium oxide Determination of manganese content |
| BS 4140-5:1986 | Methods of test for aluminium oxide Determination of silica content |
| BS 4140-12:1986 | Methods of test for aluminium oxide Determination of vanadium content |
| BS 4140-11:1986 | Methods of test for aluminium oxide Determination of sodium content |
| BS 4140-10:1986 | Methods of test for aluminium oxide Determination of untamped density |
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