ISO 5992:1979
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Sodium hydroxide for industrial use — Determination of mercury content — Dithizone photometric method
Hardcopy , PDF
English, French
01-09-1979
18-02-2019
Covers a method applicable to liquid or solid products having mercury contents greater than 0,05 mg/kg. The principle of determination is based on oxidation of the mercury contained in a test portion to mercury(II) ions by potassium permanganate in the presence of sulphuric acid, reduction of the excess oxidant, extraction in chloroform of the complex formed, and photometric measurement of the complex at a wavelength of about 490 nm.
| Committee |
ISO/TC 47
|
| DevelopmentNote |
Also numbered as BS 6075-10(1981). (11/2003)
|
| DocumentType |
Standard
|
| Pages |
5
|
| PublisherName |
International Organization for Standardization
|
| Status |
Withdrawn
|
| Standards | Relationship |
| NBN T 03 134 : 1980 | Identical |
| NFT 20 434 : 80 FD | Identical |
| UNE 55613:1984 | Identical |
| UNE 55613:1984 | Not Equivalent |
| BS 6075-11:1981 | Methods of sampling and test for sodium hydroxide for industrial use Determination of mercury content (flameless atomic absorption method) |
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