Sodium hydroxideSodium hydroxide, also known as caustic soda and, more generically, as lye, is an inorganic compound with the formula NaOH. It is a white solid ionic compound consisting of sodium cations Na+ and hydroxide anions OH−. Read from the Chembox of the Wikipedia article Sodium hydroxide, revision 1380026944.

Property

Value

Formula

HNaO, 40.00 g/mol

Melting point

323 °C

Boiling point

1388 °C

Density

2.13 g/cm³

pKa

13.9

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