ISO 2992:1974
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Ammonium sulphate for industrial use — Determination of iron content — 2,2'- Bipyridyl photometric method
Hardcopy , PDF
English, French
01-04-1974
30-04-2025
Applicable to Fe contents of equal to or more than 0.0001 % (m/m). The reaction bases on the reduction of iron(III) by hydroxylammonium chloride. Formation of the complex between iron(II) and 2,2'-dipyridyl in a buffered medium (pH value between 4.5 and 6). Photometric measurement of the coloured complex at a wavelength of about 522 nm. Has also been approved by the IUPAC.
| Committee |
ISO/TC 47
|
| DocumentType |
Standard
|
| Pages |
3
|
| PublisherName |
International Organization for Standardization
|
| Status |
Withdrawn
|
| Standards | Relationship |
| BS 3786:1964 | Similar to |
| NBN T 03 066 : 1979 | Identical |
| NFT 20 573 : 1966 | Similar to |
| EN 12123:2012 | Chemicals used for treatment of water intended for human consumption - Ammonium sulfate |
| 12/30258200 DC : 0 | BS EN 12123 - CHEMICALS USED FOR TREATMENT OF WATER INTENDED FOR HUMAN CONSUMPTION - AMMONIUM SULFATE |
| PREN 12123 : DRAFT 2012 | CHEMICALS USED FOR TREATMENT OF WATER INTENDED FOR HUMAN CONSUMPTION - AMMONIUM SULFATE |
| I.S. EN 12123:2012 | CHEMICALS USED FOR TREATMENT OF WATER INTENDED FOR HUMAN CONSUMPTION - AMMONIUM SULFATE |
| ONORM EN 12123 : 2013 | CHEMICALS USED FOR TREATMENT OF WATER INTENDED FOR HUMAN CONSUMPTION - AMMONIUM SULFATE |
| DIN EN 12123:2013-02 | Chemicals used for treatment of water intended for human consumption - Ammonium sulfate |
| BS EN 12123:2012 | Chemicals used for treatment of water intended for human consumption. Ammonium sulfate |
| UNE-EN 12123:2013 | Chemicals used for treatment of water intended for human consumption - Ammonium sulfate |
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