Ternary system NH4H2PO4-(NH4)2HPO4-H2O Isotherms at 30, 45 and 65°C

Abstract

The isotherms at 30, 45, and 65 °C have been investigated for the ternary system NH₄H₂PO₄-(NH₄)₂HPO₄- H₂O by conductivity measurements. The solid phases observed are the α-NH₄H₂PO₄, β-NH₄H₂PO₄ and (NH₄)₂HPO₄. The nature and existence domains of the various phases have been determined by using chemical analysis and X-rays diffraction.