ISO 3423:1975
Current
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Sulphuric acid and oleums for industrial use — Determination of sulphur dioxide content — Iodometric method
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English, French
01-11-1975
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Applicable of products the SO2 content of which is equal to or more than 2 mg/kg. Based on the displacement of the sulphur dioxide present in the test portion by a current of pure nitrogen and absorption in a known volume of iodine solution. Titration of the excess of iodine with standard volumetric sodium thiosulphate solution. The diagram of the glass apparatus for absorption is shown in a figure.
| Committee |
ISO/TC 47
|
| DocumentType |
Standard
|
| Pages |
3
|
| PublisherName |
International Organization for Standardization
|
| Status |
Current
|
| Standards | Relationship |
| BS 3903:1977 | Similar to |
| NFT 20 293 : 1970 | Similar to |
| UNE 55590:1981 | Identical |
| NBN T 03 025 : 1979 | Identical |
| DIN EN 899:2009-07 | Chemicals used for treatment of water intended for human consumption - Sulfuric acid |
| BS EN 899:2009 | Chemicals used for treatment of water intended for human consumption. Sulfuric acid |
| I.S. EN 899:2009 | CHEMICALS USED FOR TREATMENT OF WATER INTENDED FOR HUMAN CONSUMPTION - SULPHURIC ACID |
| ONORM EN 899 : 2009 | CHEMICALS USED FOR TREATMENT OF WATER INTENDED FOR HUMAN CONSUMPTION - SULPHURIC ACID |
| NF EN 899 : 2009 | CHEMICALS USED FOR TREATMENT OF WATER INTENDED FOR HUMAN CONSUMPTION - SULPHURIC ACID |
| UNI EN 899 : 2009 | CHEMICALS USED FOR TREATMENT OF WATER INTENDED FOR HUMAN CONSUMPTION - SULPHURIC ACID |
| EN 899:2009 | Chemicals used for treatment of water intended for human consumption - Sulphuric acid |
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