Status : Published (Under review)
This standard was last reviewed and confirmed in 2023. Therefore this version remains current.
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Abstract

The method is applicable to products having carbonyl compounds contents between 0.00025 % (m/m) and 0.01 % (m/m). The principle is based on reaction in acid medium of the carbonyl compounds in a test portion with 2,4-dinitrophenylhydrazine. Formation of the corresponding 2,4-dinitrophenylhydrazones which, after making the solution alkaline, take on a red coloration. Photometric measurement of this red coloration at a wavelength of about 445 nm. - International Standards ISO 1388/1 to 1388/12 cancel and replace ISO Recommendation R 1388-1970 of which they constitute a technical revision.

General information

  • Status
     : Published
    Publication date
     : 1981-12
    Stage
    : International Standard confirmed [90.93]
  • Edition
     : 1
    Number of pages
     : 3
  • Technical Committee :
    ISO/TC 47
    ICS :
    71.080.60 
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