ISO 997:1976
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ISO 997:1976
5442

Abstract 

The method is applicable to products having a calcium content equal to or greater than 0.002 % (m/m). The principle consists in titration of the calcium with a standard volumetric solution of the disodium salt of (ethylenedinitrilo)tetraacetic acid (EDTA disodium salt) in the presence of 2,2'-(ethylenedinitrilo)diphenol Äglyoxal-bis-(2-hydroxyanil)Ü as indicator, after elimination of impurities which may hinder the determination. - Replaces ISO Recommendation R 997-1969.


General information 

  •  :  Withdrawn
     : 1976-05
  •  : 1
     : 3
  •  : ISO/TC 47 Chemistry
  •  :
    71.060.40 Bases

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