grade

ACS reagent

Quality Level

200

Assay

≥99.0%

form

powder or crystals

impurities

≤0.01% insolubles
≤5 ppm N compounds

pH

5.5-5.8 (25 °C, 5%)

anion traces

chloride (Cl^-): ≤0.001%

cation traces

Ca: ≤0.01%
Fe: ≤5 ppm
Mg: ≤0.005%
Na: ≤0.02%
heavy metals: ≤5 ppm (by ICP)

SMILES string

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

InChI

1S/2K.H2O4S/c;;1-5(2,3)4/h;;(H2,1,2,3,4)/q2*+1;/p-2

InChI key

OTYBMLCTZGSZBG-UHFFFAOYSA-L