ISO 1618:1976
Withdrawn
Aluminium oxide primarily used for the production of aluminium — Determination of vanadium content — N-Benzoyl-N-phenylhydroxylamine photometric method
Hardcopy , PDF
English, French
09-01-1976
05-21-2019
The method is applicable to products having vanadium contents between 0,0003 % (m/m) and 0,016 % (m/m), provided that the content of chromic oxide and titanic oxide does not exceed 0,002 % (m/m) and 0,006 % (m/m), respectively. The principle consists in a previous oxidation of the vanadium contained in the test sample to vanadium(V) by patassium permanganate in sulphuric acid solution. Formation of the vanadium-N-benzoyl-N-phenylhydroxylamine complex. Extraction of the violet coloured complex with chloroform in hydrochloric acid*solution. Photometric measurement of the coloured complex at a wavelength of about 524 nm.
| Committee |
ISO/TC 226
|
| DevelopmentNote |
Also numbered as BS 4140-12(1986) (07/2005)
|
| DocumentType |
Standard
|
| Pages |
4
|
| PublisherName |
International Organization for Standardization
|
| Status |
Withdrawn
|
| Standards | Relationship |
| NBN T 03 412 : 1983 | Identical |
| BS 4140-16:1986 | Methods of test for aluminium oxide Determination of zinc content by flame atomic absorption |
| BS 4140-6:1980 | Methods of test for aluminium oxide Determination of titanium content |
| BS 4140-9:1986 | Methods of test for aluminium oxide Measurement of the angle of repose |
| BS 4140-4:1986 | Methods of test for aluminium oxide Preparation of sample solution by alkaline fusion |
| BS 4140-13:1986 | Methods of test for aluminium oxide Preparation of sample solution by treatment with hydrochloric acid under pressure |
| 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 4140-8:1986 | Methods of test for aluminium oxide Determination of absolute density using a pyknometer |
| BS 4140-1:1986 | Methods of test for aluminium oxide Preparation and storage of test samples |
| 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 |
Please Login or Create an Account so you can add users to your Multi user PDF Later.
Important note : All end users must be registered with an Account prior to user licenses being assigned.
Users cannot be edited or removed once added to your Multi user PDF.