Norm

ISO 2367:1972 en

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

31,57

Over deze norm

Status Definitief
Aantal pagina's 3
Gepubliceerd op 01-12-1972
Taal Engels
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.

Details

ICS-code 71.060.50
Nederlandse titel Cryolite (natural and artificial) - Determination of aluminium content - 8- Hydroxyquinoline gravimetric method
Engelse titel Cryolite (natural and artificial) - Determination of aluminium content - 8- Hydroxyquinoline gravimetric method

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