Reference number
ISO 2367:1972
International Standard
ISO 2367:1972
Cryolite (natural and artificial) — Determination of aluminium content — 8- Hydroxyquinoline gravimetric method
Edition 1
1972-12
Preview
ISO 2367:1972
7206
No disponible en español
Publicado (Edición 1, 1972)
Esta publicación se revisó y confirmó por última vez en 2022. Por lo tanto, esta versión es la actual.

ISO 2367:1972

ISO 2367:1972
7206
Idioma
Formato
CHF 42
Convertir Franco suizo (CHF) a tu moneda

Resumen

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.

Informaciones generales

  •  : Publicado
     : 1972-12
    : Norma Internacional confirmada [90.93]
  •  : 1
     : 3
  • ISO/TC 226
    71.060.50 
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