ISO 3361:1975
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ISO 3361:1975
8647

Abstract 

Specifies a reduced molybdosilicate spectrophotometric method for the determination of the soluble silica content of phosphoric acid for industrial use. The method can be used for the determination of 1 µg of soluble silica in the presence of 20 mg of phosphorus pentoxide. It is thus, for example, applicable to the determination of soluble silica contents greater than 30 mg/kg if the phosphoric acid contains 60 % of phosphorus pentoxide.


General information 

  •  :  Withdrawn
     : 1975-07
  •  : 1
     : 4
  •  : ISO/TC 47 Chemistry
  •  :
    71.060.30 Acids

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