GSO ISO 1620:2013
Cryolite, natural and artificial -- Determination of silica content -- Reduced molybdosilicate spectrophotometric method

Standard No.

GSO ISO 1620:2013

Release Date

2013

Published By

GSO

Latest

GSO ISO 1620:2013

Scope

This International Standard specifies a reduced molybdosilicate spectrophotometric method for the determination of the silica content of natural and artificial cryolite and of natural and synthetic materials having a molar ratio (NaF/Al F3) between 3 and 1,7 approximately. The method is applicable to products the phosphorus(V) oxide (P2O5) content of which does not exceed 0,02 % (m/m).

GSO ISO 1620:2013 history

• 2013 GSO ISO 1620:2013 Cryolite, natural and artificial -- Determination of silica content -- Reduced molybdosilicate spectrophotometric method