Sodium hydroxide solution

Product Name

Sodium hydroxide solution, 49-51% in water, eluent for IC

InChI

1S/Na.H2O/h;1H2/q+1;/p-1

SMILES string

[OH-].[Na+]

InChI key

HEMHJVSKTPXQMS-UHFFFAOYSA-M

vapor pressure

3 mmHg ( 37 °C)

form

liquid

concentration

49-51% in water

technique(s)

ion chromatography: suitable

impurities

≤0.0005% total nitrogen (N)
≤0.01% ammonium hydroxide precipitate

Quality Level

100

pH

14.0

solubility

water: soluble (completely miscible)

anion traces

carbonate (as Na₂CO₃): ≤1000 mg/kg
chloride (Cl^-): ≤100 mg/kg
phosphate (PO₄^3-): ≤5 mg/kg
silicate (as SiO₂): ≤10 mg/kg
sulfate (SO₄^2-): ≤10 mg/kg

cation traces

Al: ≤5 mg/kg
Ca: ≤10 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤5 mg/kg
K: ≤100 mg/kg
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
Ni: ≤5 mg/kg
Pb: ≤10 mg/kg
Zn: ≤5 mg/kg