Magnesium Hydroxide

Industrial Grade

Chemical formula: Mg(OH)₂
CAS No.: 1309-42-8
HS Code: 2816.10
Appearance: Very fine white powder

A safe, low-solubility alkali that acts as a slow-release neutralising agent and does not raise pH above approximately 9, making it a safer alternative to caustic soda and lime in water treatment. Also used as a halogen-free flame retardant and as a magnesium source in fertilizers and feeds.

Purity Mg(OH)₂≥ 95.0 %

Magnesium oxide MgO≥ 65.0 %

Particle size D50≤ 5 µm

Specifications

Parameter	Unit	Specification
Mg(OH)₂ content	%	≥ 95.0
MgO	%	≥ 65.0
CaO	%	≤ 1.0
Iron (Fe)	%	≤ 0.10
Chloride (Cl)	%	≤ 0.20
Acid Insolubles	%	≤ 0.30
Loss on Ignition	%	29.0 – 31.5
Moisture	%	≤ 1.0
Whiteness	%	≥ 95
Residue on 325 mesh	%	≤ 0.5
Bulk Density	g/cm³	0.35 – 0.55

Applications

Neutralisation of acidic water and precipitation of heavy metals
Flame retardant for plastics, cables and rubber
Magnesium source for fertilizers and feeds
Flue-gas desulphurisation and chemical industries

Packaging & Storage

Lined paper or polypropylene bags of 25 kg or 1-tonne jumbo bags
Store in a dry place away from acids
Shelf life: 24 months in the original sealed packaging

Safety: Not classified as hazardous under GHS; non-flammable. Wearing a dust mask and safety goggles is recommended to avoid fine dust. A Safety Data Sheet (SDS) and a Certificate of Analysis (COA) for every batch are available on request.