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SRPS H.B8.175:1979

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

May 16, 1979
May 16, 1979
95.99   Withdrawal of Standard   Dec 20, 2012

General information

95.99     Dec 20, 2012

ISS

B082

International Standard

71.100.10  

Serbian  

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Scope

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.

Life cycle

NOW

WITHDRAWN
SRPS H.B8.175:1979
95.99 Withdrawal of Standard
Dec 20, 2012

Related project

Adopted from ISO 3429:1976