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ISO 1618:1976

Aluminium oxide primarily used for the production of aluminium — Determination of vanadium content — N-Benzoyl-N-phenylhydroxylamine photometric method
1. 9. 1976.
95.99   Povučen   4. 2. 2016.

Опште информације

95.99     4. 2. 2016.

ISO

ISO/TC 226

Međunarodni standard

71.100.10  

francuski   engleski  

Kupovina

Povučen

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Apstrakt

The method is applicable to products having vanadium contents between 0,0003 % (m/m) and 0,016 % (m/m), provided that the content of chromic oxide and titanic oxide does not exceed 0,002 % (m/m) and 0,006 % (m/m), respectively. The principle consists in a previous oxidation of the vanadium contained in the test sample to vanadium(V) by patassium permanganate in sulphuric acid solution. Formation of the vanadium-N-benzoyl-N-phenylhydroxylamine complex. Extraction of the violet coloured complex with chloroform in hydrochloric acid*solution. Photometric measurement of the coloured complex at a wavelength of about 524 nm.

Životni ciklus

TRENUTNO

POVUČEN
ISO 1618:1976
95.99 Povučen
4. 2. 2016.

Nacionalna preuzimanja

SRPS H.B8.606:1979  
ISS

Ispitivanje tehničkog aluminijum-oksida - Određivanje sadržaja vanadijuma - Fotometrijska metoda

95.99   Povučen

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