ISO 1391-5:1981
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ISO 1391-5:1981
5976

Résumé

The method is applicable to solid paraformaldehyde of aldehyde contents in the range 67 % (m/m) to 97 % (m/m). The principle consists in the reaction of aldehyde present in a test portion with neutralized sodium sulphite solution. Titration of the liberated sodium hydroxide with sulphuric acid solution using thymolphthalein as indicator. - This document has also been approved by the IUPAC.


Informations générales 

  •  : Annulée
     : 1981-05
  •  : 1
     : 2
  •  : ISO/TC 47 Chimie
  •  :
    71.080.80 Aldéhydes et cétones

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