Formula: C₂H₆O₆·2H₂O CAS No.: 6153-56-6 Molecular Weight: 126.07

Sodium Hydroxide is a strong base in terms of chemical ionization and solutions of it can be assayed using a strong acid, such as Hydrochloric Acid or Sulfuric Acid, or by using an acidimetric standard such as Potassium Hydrogen Phthalate (KHP).