Sigma-Aldrich Potassium Hydroxide Pellet

vapor pressure

1 mmHg ( 719 °C)

Quality Level

200

grade

puriss.

assay

85-100.5%

form

pellets

quality

meets analytical specification of Ph. Eur., BP

impurities

residual solvents, complies
≤0.0005% heavy metals (as Pb)
≤0.0005% total nitrogen (N)
≤1% K₂CO₃

pH

~13.5 (25 °C, 5.6 g/L)

mp

361 °C (lit.)

anion traces

chloride (Cl^-): ≤50 mg/kg
phosphate (PO₄^3-): ≤10 mg/kg
silicate (as SiO₂): ≤100 mg/kg
sulfate (SO₄^2-): ≤20 mg/kg