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75699

Sigma-Aldrich

Oxalic acid dihydrate

BioUltra, ≥99.0% (RT)

Synonym(s):

Ethanedioic acid dihydrate

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About This Item

Linear Formula:
HO2CCO2H · 2H2O
CAS Number:
6153-56-6
Molecular Weight:
126.07
Beilstein:
3679436
EC Number:
205-634-3
MDL number:
MFCD00149102
UNSPSC Code:
12161700
eCl@ss:
39021701
PubChem Substance ID:
57652582
NACRES:
NA.25

vapor density

4.4 (vs air)

vapor pressure

<0.01 mmHg ( 20 °C)

product line

BioUltra

Assay

≥99.0% (RT)

form

crystals

impurities

insoluble matter, passes filter test
≤0.001% total nitrogen (N)

ign. residue (900 °C)

≤0.01% (as SO4)

pH

~1.0 (25 °C, 1 M in H2O)

mp

104-106 °C (lit.)

solubility

H2O: 1 M at 20 °C, clear, colorless

anion traces

chloride (Cl-): ≤5 mg/kg
sulfate (SO42-): ≤50 mg/kg

cation traces

Al: ≤5 mg/kg
As: ≤0.1 mg/kg
Ba: ≤5 mg/kg
Bi: ≤5 mg/kg
Ca: ≤5 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: ≤5 mg/kg
Pb: ≤5 mg/kg
Sr: ≤5 mg/kg
Zn: ≤5 mg/kg

absorption

cut-off at 303 nm in H2O at 1 M

SMILES string

[H]O[H].[H]O[H].OC(=O)C(O)=O

InChI

1S/C2H2O4.2H2O/c3-1(4)2(5)6;;/h(H,3,4)(H,5,6);2*1H2

InChI key

GEVPUGOOGXGPIO-UHFFFAOYSA-N

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Related Categories

Pictograms

CorrosionExclamation mark
GHS05,GHS07

Signal Word

Danger

Hazard Statements

H302 + H312,H318

Hazard Classifications

Acute Tox. 4 Dermal - Acute Tox. 4 Oral - Eye Dam. 1

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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Paul A Nakata
PloS one, 10(10), e0141982-e0141982 (2015-10-31)
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Jun Hu et al.
Physical chemistry chemical physics : PCCP, 17(32), 20537-20542 (2015-07-23)
Olive-shaped SnO2 nanocrystals were synthesized successfully via a facile hydrothermal route, using tin dichloride hydrate, oxalic acid dihydrate and polyvinylpyrrolidone as reaction precursors, and showed great potential in the large-scale preparation of SnO2 nanocrystals. The prepared SnO2 nanocrystals were characterized
Radomír Pilný et al.
Dalton transactions (Cambridge, England : 2003), 43(32), 12243-12250 (2014-06-11)
Complex formation between [Pd(H2O)4](2+) and oxalate (ox = C2O4(2-)) has been studied spectrophoto-metrically in aqueous solution at variable temperature, ionic strength and pH. Thermodynamic parameters at 298.2 K and 1.00 mol dm(-3) HClO4 ionic medium for the complex formation [Pd(H2O)4](2+)
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Analytical and bioanalytical chemistry, 407(6), 1545-1557 (2015-01-13)
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