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1.05073

Supelco

di-Potassium oxalate monohydrate

for analysis EMSURE® ACS

Synonym(s):

di-Potassium oxalate monohydrate, Oxalic acid dipotassium salt monohydrate

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About This Item

Empirical Formula (Hill Notation):
C2K2O4 · xH2O
CAS Number:
Molecular Weight:
166.22 (anhydrous basis)
MDL number:
UNSPSC Code:
12352107
EC Index Number:
209-506-8
NACRES:
NA.21

grade

ACS reagent

Quality Level

vapor pressure

<0.1 hPa ( 20 °C)

product line

EMSURE®

assay

99.5-101.0% (oxidimetric)

form

solid

potency

660 mg/kg LD50, oral (Rat)

impurities

≤0.01% Insoluble matter

pH

7.0-8.5 (20 °C, 50 g/L in H2O)

mp

>138 °C (decomposition)

solubility

392 g/L (anhydrous substance)

density

2.20 g/cm3 at 20.4 °C

bulk density

700‑1100 kg/m3

anion traces

chloride (Cl-): ≤0.001%
sulfate (SO42-): ≤0.01%

cation traces

Fe: ≤0.0005%
NH4+: ≤0.002%
Na: ≤0.02%
heavy metals (as Pb): ≤0.001%

storage temp.

2-30°C

InChI

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

InChI key

QCPTVXCMROGZOL-UHFFFAOYSA-L

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Analysis Note

Assay (oxidimetric): 99.5 - 101.0 %
Insoluble matter: ≤ 0.01 %
Neutrality: passes test
Chloride (Cl): ≤ 0.001 %
Sulfate (SO₄): ≤ 0.01 %
Heavy metals (as Pb): ≤ 0.001 %
NH₄ (Ammonium): ≤ 0.002 %
Fe (Iron): ≤ 0.0005 %
Na (Sodium): ≤ 0.02 %
Substances darkened by hot sulfric acid: passes test
Corresponds to ACS

Legal Information

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

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Warning

Hazard Classifications

Acute Tox. 4 Dermal - Acute Tox. 4 Oral - Eye Irrit. 2

Storage Class

13 - Non Combustible Solids

wgk_germany

WGK 1


Certificates of Analysis (COA)

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