32304

Ammonium oxalate monohydrate

puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., 99.5-101.0%

• Synonym(s): Oxalic acid diammonium salt
• Linear Formula: (NH₄)₂C₂O₄ · H₂O
• CAS Number: 6009-70-7
• Molecular Weight: 142.11
• Beilstein/REAXYS Number: 3759830
• EC Number: 238-135-4
• MDL number: MFCD00149694
• UNSPSC Code: 12352302
• PubChem Substance ID: 329754130
• NACRES: NA.21

Properties

• grade: ACS reagent; puriss. p.a.
• agency: USP/NF; reag. ISO; reag. Ph. Eur.
• vapor pressure: <0.1 hPa ( 20 °C)
• assay: 99.5-101.0%
• form: crystalline
• impurities: ≤0.005% in water insoluble matters
• ign. residue: ≤0.02% (as SO₄)
• pH: 6-7 (20 °C, 2.5%)
• mp: 133 °C (dec.) (lit.)
• anion traces: chloride (Cl^-): ≤5 mg/kg; nitrate (NO₃^-): ≤5 mg/kg; sulfate (SO₄^2-): ≤20 mg/kg
• cation traces: Ca: ≤10 mg/kg; Cd: ≤5 mg/kg; Cu: ≤5 mg/kg; Fe: ≤2 mg/kg; K: ≤10 mg/kg; Mg: ≤10 mg/kg; Na: ≤10 mg/kg; Pb: ≤5 mg/kg; Zn: ≤5 mg/kg
• 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 the 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 has been compared with that of isolated coal-solubilizing agent (CSA).

Application

Ammonium oxalate monohydrate may be used to prepare an electrochemiluminescence (ECL) solution containing 1mM tris(2,2-bipyridyl)ruthenium(II) (Ru(bpy)₃²⁺) and 0.2mM ammonium oxalate monohydrate in a 0.1M ammonium acetate buffer at pH 5.0.

Safety Information

• pictograms: GHS07
• signalword: Warning
• hcodes: H302,H319
• pcodes: P264 - P280 - P301 + P312 - P305 + P351 + P338 - P337 + P313 - P501
• Hazard Classifications: Acute Tox. 4 Oral - Eye Irrit. 2
• Storage Class: 13 - Non Combustible Solids
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable