Nomenclature
CAS number: 1311-90-6
Ammonium tungstophosphate; ammonium phosphowolframate.
H
12N
3O
40PW
12; mol wt 2931.15.
H 0.41%, N 1.43%, O 21.83%, P 1.06%, W 75.26%.
(NH
4)
3PO
4.12WO
3.
Description and references
Prepn: Wu, J. Biol.
Chem. 43, 189 (1920); Healy. Radiochim. Acta 2, 146 (1964).
Properties
Dihydrate, microcryst powder. Soly in water (20°):
0.15 g/l. Freely sol in fixed alkali hydroxide solns.Use
As ion-exchanger.