ISO 2368:1972
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Aluminium fluoride for industrial use Determination of iron content 1,10- Phenanthroline photometric method
Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users
10-05-2019
English, French
01-12-1972
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The method is applicable to products having a content greater than 0,020 %. The principle consists in dissolution of a test portion by either alkaline or acid fusion. Reduction of the iron(III) by hydroxylammonium chloride. Formation of the iro(II)-1, 10-phenanthroline complex in a buffered medium (pH value between 3,5 and 4,2) Photometric measurement of the coloured complex at a wavelength of about 510 nm.
| DocumentType |
Standard
|
| Pages |
4
|
| PublisherName |
International Organization for Standardization
|
| Status |
Withdrawn
|
| Standards | Relationship |
| BS 4993-2:1974 | Similar to |
| NBN T 03 438 : 1983 | Identical |
| NFT 20 161 : 84 FD | Identical |
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