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1.00489

Supelco

Oxalic acid dihydrate

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Synonym(s):
Oxalic acid dihydrate, Ethanedioic acid
Linear Formula:
(COOH)2 · 2 H2O
CAS Number:
Molecular Weight:
126.07
MDL number:
EC Index Number:
205-634-3

grade

for inorganic trace analysis

Quality Level

vapor pressure

0.000312 hPa ( 25 °C)

Assay

≥99.5% (calculated as dihydrate, alkalimetric)

form

solid

potency

375 mg/kg LD50, oral (Rat)

pH

1.5 (10 g/L in H2O)

bp

149-160 °C/1013 hPa (decomposition)

mp

98-100 °C

transition temp

flash point 157 °C (decomposition)

solubility

water: >100 g/L at 25 °C

density

1.65 g/cm3 at 20 °C

bulk density

813 kg/m3

anion traces

chloride (Cl-): ≤5000 ppb
phosphate (PO43-): ≤500 ppb
sulfate (SO42-): ≤2000 ppb

cation traces

Ag: ≤10 ppb
Al: ≤20 ppb
As: ≤1.0 ppb
Au: ≤1.0 ppb
Ba: ≤100 ppb
Be: ≤1.0 ppb
Bi: ≤1.0 ppb
Ca: ≤100 ppb
Cd: ≤50 ppb
Co: ≤5 ppb
Cr: ≤10 ppb
Cu: ≤5 ppb
Fe: ≤50 ppb
Ga: ≤1.0 ppb
Ge: ≤1.0 ppb
In: ≤1.0 ppb
K: ≤200 ppb
Li: ≤5 ppb
Mg: ≤20 ppb
Mn: ≤5 ppb
Mo: ≤5 ppb
Na: ≤100 ppb
Ni: ≤10 ppb
Pb: ≤10 ppb
Pt: ≤1.0 ppb
Sb: ≤1.0 ppb
Sn: ≤5 ppb
Sr: ≤100 ppb
Ti: ≤5 ppb
Tl: ≤1.0 ppb
U: ≤1.0 ppb
V: ≤10 ppb
Zn: ≤20 ppb

storage temp.

2-30°C

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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vapor pressure

0.000312 hPa ( 25 °C)

vapor pressure

0.000312 hPa ( 25 °C)

vapor pressure

0.000312 hPa ( 25 °C)

vapor pressure

0.000312 hPa ( 25 °C)

assay

≥99.5% (calculated as dihydrate, alkalimetric)

assay

≥99% (manganometric)

assay

99.5-102.0% (manganometric)

assay

≥99% (manganometric)

form

solid

form

solid

form

solid

form

solid

pH

1.5 (10 g/L in H2O)

pH

1.5 (10 g/L in H2O)

pH

1.5 (10 g/L in H2O)

pH

1.5 (10 g/L in H2O)

bp

149-160 °C/1013 hPa (decomposition)

bp

149-160 °C/1013 hPa (decomposition)

bp

149-160 °C/1013 hPa (decomposition)

bp

149-160 °C/1013 hPa (decomposition)

Analysis Note

Assay (alcalimetric, calc. as dihydrate): ≥ 99.5 %
Chloride (Cl): ≤ 5000 ppb
Phosphate (PO₄): ≤ 500 ppb
Sulfate (SO₄): ≤ 2000 ppb
Ag (Silver): ≤ 10 ppb
Al (Aluminium): ≤ 20 ppb
As (Arsenic): ≤ 1.0 ppb
Au (Gold): ≤ 1.0 ppb
Ba (Barium): ≤ 100 ppb
Be (Beryllium): ≤ 1.0 ppb
Bi (Bismuth): ≤ 1.0 ppb
Ca (Calcium): ≤ 100 ppb
Cd (Cadmium): ≤ 50 ppb
Co (Cobalt): ≤ 5 ppb
Cr (Chromium): ≤ 10 ppb
Cu (Copper): ≤ 5 ppb
Fe (Iron): ≤ 50 ppb
Ga (Gallium): ≤ 1.0 ppb
Ge (Germanium): ≤ 1.0 ppb
In (Indium): ≤ 1.0 ppb
K (Potassium): ≤ 200 ppb
Li (Lithium): ≤ 5 ppb
Mg (Magnesium): ≤ 20 ppb
Mn (Manganese): ≤ 5 ppb
Mo (Molybdenum): ≤ 5 ppb
Na (Sodium): ≤ 100 ppb
Ni (Nickel): ≤ 10 ppb
Pb (Lead): ≤ 10 ppb
Pt (Platinum): ≤ 1.0 ppb
Sb (Antimony): ≤ 1.0 ppb
Sn (Tin): ≤ 5 ppb
Sr (Strontium): ≤ 100 ppb
Ti (Titanium): ≤ 5 ppb
Tl (Thallium): ≤ 1.0 ppb
U (Uranium): ≤ 1.0 ppb
V (Vanadium): ≤ 10 ppb
Zn (Zinc): ≤ 20 ppb

Legal Information

SUPRAPUR is a registered trademark of Merck KGaA, Darmstadt, Germany

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


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