221716

Ammonium oxalate monohydrate

ACS reagent, ≥99%

• Synonym(s): Oxalic acid diammonium salt
• Linear Formula: (NH₄)₂C₂O₄ · H₂O
• CAS Number: 6009-70-7
• Molecular Weight: 142.11
• Beilstein: 3759830
• EC Number: 238-135-4
• MDL number: MFCD00149694
• UNSPSC Code: 12352300
• PubChem Substance ID: 329752279
• NACRES: NB.24

Properties

• grade: ACS reagent
• 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
• ign. residue: ≤0.02%
• pH: 6-7 (25 °C, 14.2 g/L)
• mp: 133 °C (dec.) (lit.)
• anion traces: chloride (Cl^-): ≤0.002%; sulfate (SO₄^2-): ≤0.002%
• cation traces: Fe: ≤2 ppm; heavy metals: ≤5 ppm (by ICP)
• SMILES string: OC(C(O)=O)=O.N.O.N
• InChI: 1S/C2H2O4.2H3N.H2O/c3-1(4)2(5)6;;;/h(H,3,4)(H,5,6);2*1H3;1H2
• InChI key: MSMNVXKYCPHLLN-UHFFFAOYSA-N

Description

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).

Application

Ammonium oxalate monohydrate may be used in the preparation of tetramethylammonium oxalate.

Safety Information

• Pictograms: GHS07
• Signal Word: Warning
• Hazard Statements: H302,H319
• Precautionary Statements: P264 - P280 - P301 + P312 - P305 + P351 + P338 - P337 + P313 - P501
• Hazard Classifications: Acute Tox. 4 Oral - Eye Irrit. 2
• Storage Class Code: 13 - Non Combustible Solids
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable