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ISO 2828:1973

Aluminium oxide primarily used for the production of aluminium — Determination of fluorine content — Alizarin complexone and lanthanum chloride spectrophotometric method
1. 12. 1973.

Опште информације

90.93     4. 1. 2022.

ISO

ISO/TC 226

Međunarodni standard

71.100.10  

francuski   engleski  

Kupovina

Objavljen

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Apstrakt

Applicable to products having F contents of more than 0.003 % (m/m). Dissolution of a test portion by attack by sulphuric acid under pressure. Separation of the fluorine by distillation at a temperature of (150 1) °C by sulphuric acid. The distillation is carried out by the method described in ISO 1693. Formation of a blue coloured complex between fluorine and alizarin complexone/lanthanum chloride reagent at a pH between 4.5 and 4.6. Addition of acetone to increase the stability and sensitivity of the fluorine complex. Spectrophotometric measurement of the complex at a wavelength of about 620 nm. Has also been approved by the IUPAC.

Životni ciklus

TRENUTNO

OBJAVLJEN
ISO 2828:1973
90.93 Odluka o potvrđivanju standarda
4. 1. 2022.

Nacionalna preuzimanja

SRPS H.B8.610:1979  
ISS

Ispitivanje tehničkog aluminijum-oksida - Određivanje sadržaja fluora - Spektrofotometrijska metoda

95.99   Povučen

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