Potassium hydrogensulfate, fused

grade

ACS reagent

Quality Level

200

form

powder

concentration

37.5-38.6% H₂SO₄ in NaOH (titration)

impurities

≤0.002% H₂SO₄
≤0.01% insolubles
≤2.5% water

acid number

37.5‑38.6%

density

2.512 g/mL at 25 °C (lit.)

anion traces

chloride (Cl^-): ≤0.002%
phosphate (PO₄^3-): ≤0.001%

cation traces

Ca: ≤0.002%
Fe: ≤0.002%
Mg: ≤0.001%
Na: ≤0.01%
heavy metals: ≤0.001%

SMILES string

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

InChI

1S/3K.H2O7S2.H2O4S/c;;;1-8(2,3)7-9(4,5)6;1-5(2,3)4/h;;;(H,1,2,3)(H,4,5,6);(H2,1,2,3,4)/q3*+1;;/p-3

InChI key

ZXJZSJHWYNTTSK-UHFFFAOYSA-K