ISO 5440:1978
Current
The latest, up-to-date edition.
Sodium hexafluorosilicate for industrial use — Determination of phosphate content — Molybdovanadate spectrophotometric method
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English, French
01-10-1978
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Applicable to products having contents, expressed as phosphorus pentoxide, of 0.005 % (m/m) to 0.05 % (m/m). The residue from the determination of the loss of mass according to ISO 5444 is used to prepare the test sample. Dissolution in dilute hydrochloric acid and nitric acid solutions. Formation of the yellow molybdovanadate and spectrophotometric measurement at a wavelength of about 420 nm. Calculation of the content from the measured absorbance.
| Committee |
ISO/TC 47
|
| DocumentType |
Standard
|
| Pages |
3
|
| PublisherName |
International Organization for Standardization
|
| Status |
Current
|
| Standards | Relationship |
| BS 5705-2:1979 | Identical |
| NBN T 03 527 : 1983 | Identical |
| NFT 20 531 : 84 FD | Identical |
| BS EN 12175:2013 | Chemicals used for treatment of water intended for human consumption. He xafluorosilicic acid |
| 12/30268245 DC : 0 | BS EN 12175 - CHEMICALS USED FOR TREATMENT OF WATER INTENDED FOR HUMAN CONSUMPTION - HEXAFLUOROSILICIC ACID |
| I.S. EN 12175:2013 | CHEMICALS USED FOR TREATMENT OF WATER INTENDED FOR HUMAN CONSUMPTION - HEXAFLUOROSILICIC ACID |
| ONORM EN 12175 : 2013 | CHEMICALS USED FOR TREATMENT OF WATER INTENDED FOR HUMAN CONSUMPTION - HEXAFLUOROSILICIC ACID |
| UNI EN 12175 : 2013 | CHEMICALS USED FOR TREATMENT OF WATER INTENDED FOR HUMAN CONSUMPTION - HEXAFLUOROSILICIC ACID |
| DIN EN 12175:2013-08 | Chemicals used for treatment of water intended for human consumption - Hexafluorosilicic acid |
| UNE-EN 12175:2013 | Chemicals used for treatment of water intended for human consumption - Hexafluorosilicic acid |
| PREN 12175 : DRAFT 2012 | CHEMICALS USED FOR TREATMENT OF WATER INTENDED FOR HUMAN CONSUMPTION - HEXAFLUOROSILICIC ACID |
| EN 12175:2013 | Chemicals used for treatment of water intended for human consumption - Hexafluorosilicic acid |
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