ISO 2760:1975
w
ISO 2760:1975
7740

Abstract 

Applicable to products having a total content up to 1 %. Is not applicable in the presence of zirconium or titanium. More than 0.006 % of iron will interfere in the determination. The principle bases on fusion of a test portion with sodium carbonate and extraction of the molten mass with hydrochloric acid. Formation of a complex by the addition of the disodium salt of ethylenediamintetra-ecetic acid (EDTA). Decomposition of the complex by sodium fluoride followed by titration of the liberated EDTA with a standard volumetric solution of zinc chloride in the presence of xylenol orange as indicator.


General information 

  •  :  Withdrawn
     : 1975-03
  •  : 1
     : 2
  •  : ISO/TC 47 Chemistry
  •  :
    71.060.50 Salts

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