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Magnesium Hydroxide
- Origin
- : China
- CAS Number
- : 1309-42-8
- HS Code
- : 2816.1
Basic Info
- 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
- Physical Form
- : Solid
- Concentration
- : Pure substance
- Appearance / Color
- : White to off-white solid
- Odor
- : Odorless
- Density (g/cm³)
- : 2.3600
- Solubility in Water
- : Insoluble (0.00064g/100mL)
- UN Number
- : Not applicable
- H-Statements
- : None
- P-Statements
- : P260
- REACH Status
- : Registered
- Drug Precursor Status
- : Non-precursor
- Storage Class (GHS)
- : 13
- Storage Conditions
- : Cool, dry place
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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.