Magnesium Hydroxide

  • Origin: China
  • CAS Number: 1309-42-8
  • HS Code: 2816.1
IUPAC Name
magnesium dihydroxide
Molecular Formula
Mg(OH)2
Molecular Weight (g/mol)
58.3200
Synonyms & Trade Names
Magnesium hydroxide; Brucite; Milk of magnesia; E528
Purity / Assay (%)
95% min
Grade / Quality Level
Technical Grade

Technical Document

Brief Overview:
Magnesium hydroxide is an inorganic compound with the chemical formula Mg(OH)2. In wastewater treatment, it can be used to provide alkalinity and pH controllers. Magnesium Hydroxide is generally in white solid form, odorless, flammable, and insoluble in water.
Manufacturing Process:
Magnesium Hydroxide can be produced by combining alkaline water with aluminium salts which induces precipitation of solid Mg(OH)2. The main reaction is:
Mg2+ + 2OH− → Mg(OH)2
Generally, Mg(OH)2 can be formed by treating seawater and combined with lime (Ca(OH)2). The total volume of seawater is about 600 m3 and gives a result of around one ton of magnesium hydroxide.