ISO 4313:1976

Current Revision
Washing powders -- Determination of total phosphorus(V) oxide content -- Quinoline phosphomolybdate gravimetric method

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ISO 4313:1976

Washing powders -- Determination of total phosphorus(V) oxide content -- Quinoline phosphomolybdate gravimetric method

PUBLISH DATE 1976
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.

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