Sodium hydroxide solution, 4 mol/l - 4 N, volumetric solution, Molar mass (M) 40,01 g/mol, Density (D) 1,15 g/cm³, Boiling point (bp) >100 °C, CAS No. [1310-73-2], UN-Nr. 1824, EG-Nr. 215-185-5, Empirical formula NaOH