IUPAC - NIST Solubility Data Series 68. Ammonium Phosphates
J Eysseltova, T P. Dirkse
The solubility of ammonium phosphate is reviewed. Many ammonium phosphates can be described in terms of the ternary system:NH3-P2O5-H2O. However, the system differs from systems like the sulfates and halates in that it has a marked tendency to form condensed oligophosphate ions. The literature survey covers the period up to 1988.
and Dirkse, T.
IUPAC - NIST Solubility Data Series 68. Ammonium Phosphates, J. Phys. & Chem. Ref. Data (JPCRD), National Institute of Standards and Technology, Gaithersburg, MD
(Accessed July 3, 2022)