ISO 2121:1972
Current
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Liquid chlorine for industrial use — Determination of water content — Gravimetric method
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01-07-1972
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The method relates to the determination of the "volatile water", that which volatilizes at the same time as the chlorine. It is applicable to products having a water content greater than 0,0005 % (m/m). It should not be applied to samples stored in bottles subject to corrosion. The principle consists in absorption of the water by passing the gasified sample into tared absorbers containing phosphorus pentoxide or magnesium perchlorate. Elimination of the gaseous chlorine and volatile impurities by flushing with air or dry nitrogen heated to 80 °C. Absorption of the chlorine in a tared bottle containing sodium hydroxide solution. Weighing of the absorbers to determine, by difference from the original masses, the mass of water.
| Committee |
ISO/TC 47
|
| DocumentType |
Standard
|
| Pages |
6
|
| PublisherName |
International Organization for Standardization
|
| Status |
Current
|
| Standards | Relationship |
| BS 3947:1976 | Similar to |
| NBN T 03 253 : 1980 | Identical |
| 03/320440 DC : DRAFT DEC 2003 | |
| UNE-EN 937:2016 | Chemicals used for treatment of water intended for human consumption - Chlorine |
| DIN EN 937:2016-09 | CHEMICALS USED FOR TREATMENT OF WATER INTENDED FOR HUMAN CONSUMPTION - CHLORINE |
| I.S. EN 937:2016 | CHEMICALS USED FOR TREATMENT OF WATER INTENDED FOR HUMAN CONSUMPTION - CHLORINE |
| DIN 19607:1987-03 | CHLORINE FOR WATER TREATMENT - TECHNICAL DELIVERY CONDITIONS |
| BS EN 937:2009 | Chemicals used for treatment of water intended for human consumption. Chlorine |
| EN 937:2016 | Chemicals used for treatment of water intended for human consumption - Chlorine |
| 15/30327163 DC : 0 | BS EN 937 - CHEMICALS USED FOR TREATMENT OF WATER INTENDED FOR HUMAN CONSUMPTION - CHLORINE |
| PREN 937 : DRAFT 2015 | CHEMICALS USED FOR TREATMENT OF WATER INTENDED FOR HUMAN CONSUMPTION - CHLORINE |
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