ISO 3000:1974
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ISO 3000:1974
8050

Abstract 

Not applicable in the presence of metaphosphate. The presence of pyrophosphate at normal concentrations Ämaximum 6 % (m/m)Ü does not interfere. The principle consists in precipitation of tripolyphosphate as its complex with tris(ethylenediamine) cobalt(III) chloride at a pH of between 3 and 4 in a buffered medium. Filtration, washing, drying and weighing of the precipitate. Details the preparation of the reagent used for analysis. Has also been approved by the IUPAC.


General information 

  •  :  Withdrawn
     : 1974-12
  •  : 1
     : 3
  •  : ISO/TC 47 Chemistry
  •  :
    71.060.50 Salts

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