ISO 2367:1972

This standard was last reviewed and confirmed in 2022. Therefore this version remains current.

Abstract

The method can be applied provided the Fe203 content does not exceed 0,15 . It can also be applied to products with molar ratio of NaF to AlF3 between approximately 3 and 1,7. The principle consists in dissolution of a test portion by acid fusion using potassium pyrosulphate and recovery by hydrochloric acid. Separation of the mixture by precipitation of aluminium, with ammonium benzoate , in an acetic reducing medium. Dissolution of the precipitate and reprecipitation as aluminium tri(quinolin-8-oxide) in an acetic buffer medium. Filtration, washing, drying of the precipitate at a temperature of 130 °C and weighing.

General information

Status
: Published

Publication date
: 1972-12
Edition
: 1

Number of pages
: 3
Technical Committee
: ISO/TC 226 Materials for the production of primary aluminium
ICS
:
71.060.50 Salts

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ISO 2367:1972

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Stage: 90.93 (Confirmed)

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