ISO 2993:1974
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.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 free acidity — Titrimetric method
Hardcopy , PDF
English, French
01-04-1974
30-04-2025
Applicable to products having a free acidity, expressed as H2 SO4 , equal to or more than 0.01 % (m/m). Dissolution of a test portion in Water and titration with standard volumetric sodium hydroxide solution in the presence of an indicator. The indicator must have a colour change in the pH range between 5.2 and 5.6. Has also been approved by the IUPAC.
| Committee |
ISO/TC 47
|
| DocumentType |
Standard
|
| Pages |
2
|
| PublisherName |
International Organization for Standardization
|
| Status |
Withdrawn
|
| Standards | Relationship |
| BS 3786:1964 | Similar to |
| NBN T 03 067 : 1979 | Identical |
| 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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