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sklademVydáno: 1976
ISO 4313:1976
ISO 4313:1976-Washing powders — Determination of total phosphorus(V) oxide content — Quinoline phosphomolybdate gravimetric method
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| Označení normy: | ISO 4313:1976 |
| Počet stran: | 3 |
| Vydání: | 1 |
| Vydáno: | 1976 |
DESCRIPTION
ISO 4313:1976
The determination is carried out in the following way: Hydrolysis of polyphosphates by nitric acid. Precipitation of phosphates in the form of quinoline phosphomolybdate in acetone solution. Drying and weighing of the precipitate.