Norm

ISO 3429:1976 en

Sodium fluoride primarily used for the production of aluminium - Determination of iron content - 1,10- Phenanthroline photometric method

31,57

Over deze norm

Status Definitief
Aantal pagina's 4
Gepubliceerd op 01-07-1976
Taal Engels
Applicable to the determination of Fe contents, expressed as Fe2 O3 , of more than 0.020 % (m/m). Covers the dissolution of a test portion by alkaline fusion by means of sodium carbonate and boric acid. Dissolving of the residue with nitric acid solution and reduction of iron(III) by means of hydroxylammonium chloride. Formation of the iron(II)-1,10-phenanthroline complex in a buffered medium at a pH between 3.5 and 4.2. Photometric measurement of the coloured complex at a wavelength of about 510 nm.

Details

ICS-code 71.100.10
Nederlandse titel Sodium fluoride primarily used for the production of aluminium - Determination of iron content - 1,10- Phenanthroline photometric method
Engelse titel Sodium fluoride primarily used for the production of aluminium - Determination of iron content - 1,10- Phenanthroline photometric method

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