Ammonium Phosphomolybdate
Title: Ammonium Phosphomolybdate
CAS Registry Number: 12026-66-3
CAS Name: Ammonium molybdophosphate
Molecular Formula: H12Mo12N3O40P
Molecular Weight: 1876.35
Percent Composition: H 0.64%, Mo 61.36%, N 2.24%, O 34.11%, P 1.65%
Line Formula: (NH4)3PO4.12MoO3
Literature References: Prepn and constitution: Illingworth, Keggin, J. Chem. Soc. 1935, 575; Thistlewaite, Analyst 72, 531 (1947); Healy, Radiochim. Acta 3, 100 (1964).
Properties: Yellow, heavy, cryst powder. Solubility in water (20°): 0.2 ±0.1 g/l. Practically insol in nitric acid; sol in fixed alkali hydroxides.
Use: In phosphorus analysis; as cation-exchanger.

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