Ammonium oxalate monohydrate
About This Item
Linear Formula:
(NH4)2C2O4 · H2O
CAS Number:
6009-70-7
Molecular Weight:
142.11
General description
Ammonium oxalate monohydrate is a diammonium salt of oxalic acid. Its refined crystal structure has been investigated by three-dimensional diffraction studies. Influence of bivalent [Mn(II), Co(II), Ni(II)] and trivalent cations [Fe(III), Cr(III)] impurities on the growth rates of ammonium oxalate monohydrate crystals has been described. Its space group and unit cell parameters have been analyzed by neutron diffraction studies. Its IR spectra have been compared with that of isolated coal-solubilizing agent (CSA).
Quality Segment: 200
Vapor Pressure: <0.1 hPa (20 °C)
Assay: ≥99%, 99.0-101.0% (ACS specification)
Form: Crystalline powder, crystals or granules
Impurities: ≤0.005% insolubles
Ignition Residue: ≤0.02%
pH: 6-7 (25 °C, 14.2 g/L)
Melting Point: 133 °C (dec.) (lit.)
Anion Traces: chloride (Cl-): ≤0.002%, sulfate (SO42-): ≤0.002%
Cation Traces: Fe: ≤2 ppm, heavy metals: ≤5 ppm (by ICP)
SMILES String: OC(C(O)=O)=O.N.O.N
