ISO 2521:1974

Tritolyl phosphate for industrial use — Determination of acidity to phenol red — Volumetric method
Specifies the titration of any acidity present in an ethanolic solution with standard volumetric sodium hydoxide solution in the presence of phenol red as indicator. The end point of the titration corresponds to the formation of the salt Na2 HPO4 .
OEN:
ISO
Langue:
English
Code(s) de l'ICS:
71.080.70
Statut:
Annulée
Date de Publication:
1974-03-31
Numéro Standard:
ISO 2521:1974