ISO 2052:1976
Withdrawn
Potassium chloride for industrial use — Determination of potassium content — Sodium tetraphenylborate titrimetric method
Hardcopy , PDF
English, French
02-01-1976
09-23-2021
The method is applicable to products having a minimum KCl content of about 95 % (m/m). The principle consists in dissolution of a test portion taken from the previously ground and sifted laboratory sample and elimination of many ammonium ions present. Precipitation of the potassium, in a slightly acid medium, by an excess of an standard volumetric sodium tetraphenylborate solution. Filtration and back-titration of this excess in the filtrate, with a standard volumetric solution of a quaternary ammonium salt, using bromphenol blue as indicator. Replaces ISO Recommendation R 2052-1971.
| Committee |
ISO/TC 47
|
| DocumentType |
Standard
|
| Pages |
4
|
| PublisherName |
International Organization for Standardization
|
| Status |
Withdrawn
|
| Standards | Relationship |
| NBN T 03 223 : 1980 | Identical |
| NFT 20 359 : 78 FD | Identical |
| BS 5551-4.3.4:1988 | Fertilizers. Chemical analysis. Determination of potassium Method for determination of potassium content (titrimetric method) |
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