Reference number
ISO 2998:1974
ISO 2998:1974
© ISO 2024
ISO 2998:1974
Sodium tripolyphosphate and sodium pyrophosphate for industrial use — Determination of orthophosphate content — Photometric method using the reduced molybdophosphate
Edition 1
1974-12
1974-12
Retirada
Resumen
Specifies a photometric method, using the reduced molybdophosphate, for the determination of orthophosphate content of sodium tripolyphosphate and sodium pyrophosphate for industrial use. Applicable to products with orthophosphate contents between 0,05 and 1,0 % (m/m).