Abstract / scope
Specifies a spectrophotometric method, using the reduced molybdosilicate, for determining the silica content of sodium fluoride. Applicable to products of which the phosphorus pentoxide content does not exceed 0,02 % (m/m).
ISO 3430:1976Published
Sodium fluoride primarily used for the production of aluminium — Determination of silica content — Reduced molybdosilicate spectrophotometric method
Fluorure de sodium principalement utilisé pour la production de l'aluminium — Dosage de la silice — Méthode spectrophotométrique au molybdosilicate réduit