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ISO 2367:1972

Cryolite (natural and artificial) — Determination of aluminium content — 8- Hydroxyquinoline gravimetric method

Standard Details

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
Standard Type: Main
Document No: ISO 2367:1972
Document Year: 1972
Pages: 3
Edition: 1
  • Section Volume:
  • ISO/TC 226. Materials for the production of primary aluminium

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ISO 2367:1972
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