Reference number
ISO 4313:1976
ISO 4313:1976
© ISO 2024
International Standard
ISO 4313:1976
Washing powders — Determination of total phosphorus(V) oxide content — Quinoline phosphomolybdate gravimetric method
Edition 1
1976-11
1976-11
ISO 4313:1976
10182
Published
(Edition 1, 1976)
This publication was last reviewed and confirmed in 2022.
Therefore this version remains current.
Abstract
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.