12-05777. Manganese Phosphate, Dibasic [Archived]

Nomenclature

CAS number: 7782-76-5
HMnO4P; mol wt 150.92.
H 0.67%, Mn 36.40%, O 42.40%, P 20.52%.
MnHPO4.

Description and references

Trihydrate. Exists in two modifications: gray form prepd by decompn of MnCO3 by phosphoric acid; pink form prepd by reaction of Mn3(PO4)2 with phosphoric acid (P2O5 concn 0.6-28%): Goloshchapov et al., Russ. J. Inorg. Chem. 11, 504 (1966).

Properties

Pink form, usually contains some tribasic phosphate. Very slightly sol in water; sol in dil acids. Gray form, sol only in hot concd HCl.

Status

This monograph has been retired and is no longer subject to revision or update.