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ISO 2367:1972

Cryolite (natural and artificial) — Determination of aluminium content — 8- Hydroxyquinoline gravimetric method
1. 12. 1972.

Опште информације

90.93     15. 11. 2022.

ISO

ISO/TC 226

Međunarodni standard

71.060.50  

francuski   engleski  

Kupovina

Objavljen

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Apstrakt

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.

Životni ciklus

TRENUTNO

OBJAVLJEN
ISO 2367:1972
90.93 Odluka o potvrđivanju standarda
15. 11. 2022.

Nacionalna preuzimanja

SRPS H.B8.122:1980  
ISS

Kriolit, prirodni i sintetički - Određivanje sadržaja aluminijuma - Gravimetrijska metoda

95.99   Povučen

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