Title: Ammonium Oxalate
CAS Registry Number: 1113-38-8
CAS Name: Ethanedioic acid diammonium salt
Molecular Formula: C2H8N2O4
Molecular Weight: 124.10
Percent Composition: C 19.36%, H 6.50%, N 22.57%, O 51.57%
Line Formula: NH4OOCCOONH4
Literature References: Commercial product is 98-99% pure. Prepn of monohydrate from aq oxalic acid and NH3 or ammonium carbonate: Bérard,
Ann. Chim. 73, 277 (1810).
Review: Gmelins, Ammonium (8th ed.)
23, pp 400-407 (1936). Crystal structure of monohydrate: Robertson,
Acta Crystallogr. 18, 410, 417 (1965).
Derivative Type: Monohydrate
Properties: Orthorhombic, odorless crystals or granules.
Poisonous! d 1.50. One gram dissolves in 20 ml water, 2.6 ml boil water; slightly sol in alcohol. The aq soln is practically neutral. pH of 0.1
M soln 6.4.
Density: d 1.50
Use: Manuf explosives; electrolytic detinning of iron; in dyeing, metal polishes; for detection and determination of Ca, Pb, and rare earth metals.
