Norm

ISO 1618:1976 en

Aluminium oxide primarily used for the production of aluminium - Determination of vanadium content - N-Benzoyl-N-phenylhydroxylamine photometric method

  • Deze norm is ingetrokken sinds 22-02-2016

31,57

Over deze norm

Status Ingetrokken
Aantal pagina's 4
Gepubliceerd op 01-09-1976
Taal Engels
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.

Details

ICS-code 71.100.10
Nederlandse titel Aluminium oxide primarily used for the production of aluminium - Determination of vanadium content - N-Benzoyl-N-phenylhydroxylamine photometric method
Engelse titel Aluminium oxide primarily used for the production of aluminium - Determination of vanadium content - N-Benzoyl-N-phenylhydroxylamine photometric method

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