Reference number
ISO 2480:1972
ISO 2480:1972
© ISO 2025
International Standard
ISO 2480:1972
Sodium chloride for industrial use — Determination of sulphate content — Barium sulphate gravimetric method
Edition 1
1972-12
1972-12
ISO 2480:1972
7400
Published
(Edition 1, 1972)
This publication was last reviewed and confirmed in 2023.
Therefore this version remains current.
Abstract
The method is applicable to water soluble sulphate, in the product, but also to sulphates in a principal solution prepared in an acid medium. The principle consists in dissolution of a test portion and separation of the insoluble residue. Precipitation of the sulphate ions by barium chloride in a boiling acid medium. Filtration, washing and ignition of the precipitate. Weighing of the residue.