Potassium sulfate

InChI key

OTYBMLCTZGSZBG-UHFFFAOYSA-L

InChI

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

SMILES string

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

grade

ACS reagent, puriss. p.a.

agency

Ph. Eur., USP/NF, reag. ISO

assay

≥99%

impurities

residual solvents, complies, ≤0.0005% heavy metals (as Pb), ≤0.0005% total nitrogen (N), ≤0.005% in water insoluble matters

anion traces

chloride (Cl^-): ≤5 mg/kg, phosphate (PO₄^3-): ≤10 mg/kg

cation traces

As: ≤1 mg/kg, Ca: ≤50 mg/kg, Cd: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤5 mg/kg, Mg: ≤20 mg/kg, Na: ≤50 mg/kg, Pb: ≤5 mg/kg, Zn: ≤5 mg/kg

suitability

in accordance for appearance of solution