Reference number
ISO 3361:1975
ISO 3361:1975
Phosphoric acid for industrial use — Determination of soluble silica content — Reduced molybdosilicate spectrophotometric method
Edition 1
1975-07
Withdrawn
ISO 3361:1975
8647
Withdrawn (Edition 1, 1975)

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  •  : Withdrawn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
    : Withdrawal of International Standard [95.99]
  •  : 1
     : 4
  • ISO/TC 47
    71.060.30 
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