ISO 3200:1975

$11.05

Sodium and potassium silicates for industrial use — Determination of sulphates content — Barium sulphate gravimetric method

Published By	Publication Date	Number of Pages
ISO	1975-03	4

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Categories: 71.060.50 - Salts, ISO

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Description

Applicable to the analysis of products having contents either above 0.1 % (m/m) or above 0.25 % (m/m) according to whether the product is readily or sparingly soluble in water. The principle consists in dissolution of a test portion either directly or after alkaline fusion. Separation of the insoluble matter. Precipitation, while boiling, of the sulphate ions in an acid medium. Filtration, washing and calcination of the precipitate. Weighing of the barium sulphate after treatment with hydrofluoric acid in order to remove any silica which may be present. Has also been approved by the IUPAC.

Additional information

Published Code	ISO
Published By	International Organization for Standardization
Publication Date	1975-03
Pages Count	4
Language	English
Edition	1
File Size	235.5 KB
ICS Codes	71.060.50 - Salts

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ISO 3200:1975

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