Skip to Content
MilliporeSigma
All Photos(1)

Documents

32304

Sigma-Aldrich

Ammonium oxalate monohydrate

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

Synonym(s):

Oxalic acid diammonium salt

Sign Into View Organizational & Contract Pricing
All Photos(1)

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:
12352302
PubChem Substance ID:
329754130
NACRES:
NA.21

grade

ACS reagent
puriss. p.a.

Quality Level

100

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 (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

Looking for similar products? Visit Product Comparison Guide

Related Categories

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.

pictograms

Exclamation mark
GHS07

signalword

Warning

hcodes

H302,H319

Hazard Classifications

Acute Tox. 4 Oral - Eye Irrit. 2

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Customers Also Viewed

Slide 1 of 8

1 of 8

Ammonium iron(III) oxalate trihydrate &#8805;98%

Sigma-Aldrich

12302

Ammonium iron(III) oxalate trihydrate

Calcium chloride dihydrate puriss. p.a., ACS reagent, reag. Ph. Eur., &#8805;99%

Sigma-Aldrich

31307

Calcium chloride dihydrate

2-Pyrrolidinone 99%

Sigma-Aldrich

P74370

2-Pyrrolidinone

Sulfuric acid puriss. p.a., for determination of Hg, ACS reagent, reag. ISO, reag. Ph. Eur., 95.0-97.0%

Sigma-Aldrich

30743

Sulfuric acid

Safranin O for microscopy (Bact., Bot., Hist.), indicator (pH 0.3-1.0)

Sigma-Aldrich

84120

Safranin O

Ammonium sulfate ReagentPlus&#174;, &#8805;99.0%

Sigma-Aldrich

A5132

Ammonium sulfate

Ammonium acetate puriss. p.a., ACS reagent, reag. Ph. Eur., &#8805;98%

Sigma-Aldrich

32301

Ammonium acetate

o-Xylene for synthesis

Sigma-Aldrich

8.08697

o-Xylene

M S Cohen et al.
Applied and environmental microbiology, 56(11), 3285-3291 (1990-11-01)
Low-ranked coals were dissolved by using cell extracts derived from liquid cultures of Trametes versicolor. The coal-solubilizing agent (CSA) was separated from the broth components by a multistep isolation procedure including reverse-phase high-pressure liquid chromatography, size exclusion chromatography, ethanol fractionation

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service