Sodium hydroxide, also known as lye and caustic soda, is an inorganic compound with the formula NaOH. It is a white solid ionic compound consisting of sodium cations Na⁺ and hydroxide anions OH⁻ .
Molar mass: 39.997 g/mol
Formula: NaOH Density: 2.13 g/cm³
Melting point: 318 °C
IUPAC ID: Sodium hydroxide, Sodium oxidanide