ISO 2367:1972
Cryolite (natural and artificial) — Determination of aluminium content — 8- Hydroxyquinoline gravimetric method
OVERVIEW
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.
COMMENTS
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PRODUCT DETAILS
| Status | Current |
|---|---|
| Edition | 1972 |
| No. of Pages | 3 |
| ICS Classification | 71.060.50 Salts |
| Committee | ISO/TC 226 |
| Available for Purchase | For sale in Singapore only |
| Adoption | ISO |