Potassium carbonate

grade

ACS reagent

Quality Level

200

Assay

≥99.0%

form

powder or crystals

impurities

≤0.004% S compounds as (SO₄^2-)
≤0.005% silica
≤0.01% insolubles

pH

11-13 (25 °C 138 g/L)

mp

891 °C (lit.)

anion traces

chloride (Cl^–): ≤0.003%
phosphate (PO₄^3-): ≤0.001%

cation traces

Ca: ≤0.005%
Fe: ≤5 ppm
Mg: ≤0.002%
Na: ≤0.02%
heavy metals: ≤5 ppm (by ICP-OES)

SMILES string

[K+].[K+].[O-]C([O-])=O

InChI

1S/CH2O3.2K/c2-1(3)4;;/h(H2 2 3 4);;/q;2*+1/p-2

InChI key

BWHMMNNQKKPAPP-UHFFFAOYSA-L