International Standard
ISO 1388-4:1981
Ethanol for industrial use — Methods of test — Part 4: Estimation of content of carbonyl compounds present in moderate amounts — Titrimetric method
Reference number
ISO 1388-4:1981
Edition 1
International Standard
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ISO 1388-4:1981
Published (Edition 1, 1981)
This standard was last reviewed and confirmed in 2023. Therefore this version remains current.

ISO 1388-4:1981

ISO 1388-4:1981
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The method is applicable to products having carbonyl compounds contents equal to or greater than 0.01 % (m/m). The method only allows determination of those carbonyl compounds which react under the specified conditions. The principle is based on the reaction of hydroxylammonium chloride with the carbonyl compounds in a test portion and titration of the hydrochloric acid formed with standard volumetric sodium hydroxide solution, in the presence of bromophenol blue as indicator. - International Standards ISO 1388/1 to ISO 1377/12 cancel and replace ISO Recommendation R 1388-1970 of which they constitute a technical revision.

General information

  •  : Published
     : 1981-12
    : International Standard confirmed [90.93]
  •  : 1
     : 3
  • ISO/TC 47
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