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09898

Sigma-Aldrich

Ammonium oxalate monohydrate

BioUltra, ≥99.5% (RT)

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
Beilstein/REAXYS Number:
3759830
EC Number:
238-135-4
MDL number:
MFCD00149694
UNSPSC Code:
12161700
PubChem Substance ID:
329748860
NACRES:
NA.25

product line

BioUltra

Quality Level

100

assay

≥99.5% (RT)

impurities

insoluble matter, passes filter test

loss

≤0.02% loss on ignition

pH

6.0-7.0 (25 °C, 0.1 M in H2O)

mp

133 °C (dec.) (lit.)

solubility

H2O: 0.1 M at 20 °C, clear, colorless

anion traces

chloride (Cl-): ≤5 mg/kg
sulfate (SO42-): ≤20 mg/kg

cation traces

Al: ≤5 mg/kg
As: ≤0.1 mg/kg
Ba: ≤5 mg/kg
Bi: ≤5 mg/kg
Ca: ≤10 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤2 mg/kg
K: ≤50 mg/kg
Li: ≤5 mg/kg
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
Mo: ≤5 mg/kg
Na: ≤50 mg/kg
Ni: ≤10 mg/kg
Pb: ≤5 mg/kg
Sr: ≤5 mg/kg
Zn: ≤5 mg/kg

absorption

cut-off at 267 nm in H2O at 0.1 M

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

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Application

Ammonium oxalate monohydrate can be used to study chelators, biological buffers and biochemicals and reagents. Ammonium oxalate monohydrate has been used in an analysis of the effective segregation coefficient keff of different impurities, which suggested that the dehydration energies of cations mainly determine the capability of capture of impurity species by the growing crystal.

Other Notes

Complexes with Cu, thus inhibits spinach chloroplast phenolase

pictograms

Exclamation mark
GHS07

signalword

Warning

hcodes

H302,H319

Hazard Classifications

Acute Tox. 4 Oral - Eye Irrit. 2

Storage Class

11 - Combustible Solids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
BCCM0334
BCCJ1323
BCCJ6390
BCCD5841
BCCC0376

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EPR of Mn2+-doped ammonium oxalate monohydrate
Misra, S.K., et al.
Solid State Communications, 59, 409-413 (1986)
Study of segregation coefficient of cationic impurities in ammonium oxalate monohydrate crystals during growth from aqueous solutions
Sangwal, K., et al.
Journal of Crystal Growth, 244, 183-193 (2002)
Study of segregation coefficient of Mn(II) impurity in ammonium oxalate monohydrate crystals and the relationship between segregation coefficient and growth kinetics
Sangwal, K. and Mielniczek-Brzoska, E.
Journal of Crystal Growth, 257, 185-198 (2003)
M. Sato
Phytochemistry, 19, 1939-1939 (1980)
Electrochemiluminescence as a tool for microscopy at the nanoscale.
Lee A, et al.
Proceedings of SPIE, 13, 13-20 (2004)

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