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32304

Ammonium oxalate monohydrate

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

Synonym(s):

Oxalic acid diammonium salt

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About This Item

Linear Formula:
(NH4)2C2O4 · H2O
CAS Number:
6009-70-7
Molecular Weight:
142.11
UNSPSC Code:
12352302
NACRES:
NA.21
PubChem Substance ID:
329754130
EC Number:
238-135-4
Beilstein/REAXYS Number:
3759830
MDL number:
MFCD00149694
Assay:
99.5-101.0%
Form:
crystalline
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Quality Segment

agency

USP/NF, reag. ISO, reag. Ph. Eur.

vapor pressure

<0.1 hPa ( 20 °C)

grade

ACS reagent, puriss. p.a.

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 (SO42-): ≤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

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.

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Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Codes

H302,H319

Hazard Classifications

Acute Tox. 4 Oral - Eye Irrit. 2

Storage Class

13 - Non Combustible Solids

WGK

WGK 1

Flash Point (°F)

Not applicable

Flash Point (°C)

Not applicable

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