ISO 1388-3:1981
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ISO 1388-3:1981
5945

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.


Informations générales 

  •  : Publiée
     : 1981-12
  •  : 1
     : 3
  •  : ISO/TC 47 Chimie
  •  :
    71.080.60 Alcools. Éthers

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fr
Format Langue
std 1 40 PDF
std 2 40 Papier
  • CHF40

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