Product Name

Oxalic acid dihydrate, ACS reagent, ≥99%

grade

ACS reagent

Quality Segment

200

vapor density

4.4 (vs air)

vapor pressure

<0.01 mmHg ( 20 °C)

assay

≥99%, 99.5-102.5% (ACS specification)

form

solid

impurities

H₂SO₄, passes test (darkened), ≤0.001% N compounds, ≤0.005% insolubles

ign. residue

≤0.01%

pH

1.5 (10 g/L)

mp

104-106 °C (lit.)

solubility

water: 100 g/L at 25 °C

anion traces

chloride (Cl^-): ≤0.002%, sulfate (SO₄^2-): ≤0.005%

cation traces

Ca: ≤0.001%, Fe: ≤2 ppm, heavy metals: ≤5 ppm (by ICP-OES)

functional group

carboxylic acid

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