Title: Ammonium Ferric Oxalate

CAS Registry Number: 14221-47-7

CAS Name: Triammonium tris[ethanedioato(2-)-O,O¢]ferrate(3-)

Additional Names: ammonium trioxalatoferrate(III); ferric ammonium oxalate

Molecular Formula: C6H12FeN3O12

Molecular Weight: 374.02

Percent Composition: C 19.27%, H 3.23%, Fe 14.93%, N 11.23%, O 51.33%

Line Formula: (NH4)3Fe(C2O4)3

Literature References: Prepn: Gmelins, Iron (8th ed.) 59, part B, pp 1020-1021 (1932).

Properties: Hydrate, bright-green, monoclinic, prismatic crystals. d17.5 1.78. Affected by light. Loses 3 H2O by 100°, decomp at 160-170°. Very sol in water; practically insol in alcohol. Protect from light.

Density: d17.5 1.78

Use: In photography, blueprints; in coloring of Al and Al alloys.