Reference number
ISO 2886:1973
ISO 2886:1973
Acetaldehyde for industrial use — Determination of iron content — 2,2'- Bipyridyl photometric method
Edition 1
1973-12
Withdrawn
ISO 2886:1973
7910
Withdrawn (Edition 1, 1973)

Abstract

The principle consists in the evaporation to dryness of a test portion and dissolution of the residue in hydrochloric acid. Reduction of iron(III) by means of hydroxylammonium chloride. Formation of the iron(II)- 2,2'-dipyridyl complex. Photometric measurement of the coloured complex at a wavelength of about 522 nm. Specifies the use of a spectrophotometer or photoelectric absorptionmeter. As an alternative it is permitted to employ a visual method comparing the test solution with a series of reference solutions. Has also been approved by the IUPAC.

General information

  •  : Withdrawn
     : 1973-12
    : Withdrawal of International Standard [95.99]
  •  : 1
     : 3
  • ISO/TC 47
    71.080.80 
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