ISO 983:1974
Withdrawn
Sodium hydroxide for industrial use — Determination of iron content — 1,10- Phenanthroline photometric method
Hardcopy , PDF
English, French
12-01-1974
02-26-2019
Specifies a method that is more sensitive and more widely used than the 2,2'-bipyridyl method. It is applicable to products having iron contents equal to or greater than 0.5 mg/kg. The principle is based on the reduction of trivalent iron by hydroxylammonium chloride, formation of a bivalent iron/1,10-phenanthroline complex in a buffered system. Photometric measurement of the coloured complex at a wavelength of about 510 nm. This method has also been approved by the IUPAC. - Cancels and replaces ISO Recommendation R 983-1969.
| Committee |
ISO/TC 47
|
| DevelopmentNote |
Also numbered as BS 6075-3(1981) (09/2005)
|
| DocumentType |
Standard
|
| Pages |
2
|
| PublisherName |
International Organization for Standardization
|
| Status |
Withdrawn
|
| Standards | Relationship |
| NFT 20 423 : 76 FD | Identical |
| NBN T 03 125 : 1980 | Identical |
| UNE 55704:1983 | Not Equivalent |
| UNE 55704:1983 | Identical |
| UNE 55603:1978 | Not Equivalent |
| UNE 55603:1978 | Identical |
| BS 6075-11:1981 | Methods of sampling and test for sodium hydroxide for industrial use Determination of mercury content (flameless atomic absorption method) |
| BS 6075-8:1981 | Methods of sampling and test for sodium hydroxide for industrial use Determination of sulphate content |
| BS 6075-9:1981 | Methods of sampling and test for sodium hydroxide for industrial use Determination of calcium and magnesium contents |
| BS 6075-10:1981 | Methods of sampling and test for sodium hydroxide for industrial use Determination of mercury content (photometric method) |
| ISO 3195:1975 | Sodium hydroxide for industrial use — Sampling — Test Sample — Preparation of the main solution for carrying out certain determinations |
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