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Merck
CN

O0505

Sigma-Aldrich

Oxalic acid dihydrate

ACS reagent, 99.5-102.5%

Synonym(s):

Ethanedioic acid dihydrate

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About This Item

Linear Formula:
HO2CCO2H · 2H2O
CAS Number:
Molecular Weight:
126.07
Beilstein:
3679436
EC Number:
MDL number:
UNSPSC Code:
12352100
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grade

ACS reagent

vapor density

4.4 (vs air)

vapor pressure

<0.01 mmHg ( 20 °C)

Assay

99.5-102.5%

impurities

Substances darkened by hot sulfuric acid, passes test
≤0.001% Nitrogen compounds (as N)
≤0.005% Insoluble matter

ign. residue

≤0.01%

mp

104-106 °C (lit.)

anion traces

chloride (Cl-): ≤0.002%
sulfate (SO42-): ≤0.005%

cation traces

Ca: ≤0.001%
Fe: ≤2 ppm
heavy metals (as Pb): ≤5 ppm

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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Pictograms

CorrosionExclamation mark

Signal Word

Danger

Hazard Statements

Hazard Classifications

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

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Regulatory Information

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