Magnesium Hydroxide Supplier in Malaysia
- Also known as
- Mg(OH)2
- Magnesium Dihydroxide
- MDH
Magnesium hydroxide supplier for flame-retardant compounding, effluent treatment and process chemistry buyers in Malaysia. Written Mg(OH)2 and also traded as magnesium dihydroxide or MDH (CAS 1309-42-8), it is a white alkaline mineral supplied as dry powder and as a pumpable aqueous slurry.
Powder grades are selected on mesh cut, whiteness and whether the surface is treated for polymer compounding. Slurry is selected for continuous dosing without dry handling, so the form usually decides the offer before the tonnage does.
This is the hydroxide, not magnesium oxide, which is the calcined product ordered separately. It is also not interchangeable with aluminium hydroxide in a halogen-free package, because the two release their water at different temperatures. The page covers the industrial mineral for polymer, effluent and process work rather than any consumer-health use.
Send the form, grade, mesh cut, application, quantity and delivery location with your enquiry. Availability, packing and documentation are settled at quotation, and supply is subject to applicable requirements.
- CAS number
- 1309-42-8
- Formula
- Mg(OH)2
- Grade
- technical, flame-retardant, water-treatment
- Appearance
- white free-flowing powder, or white pumpable aqueous slurry
Magnesium Hydroxide grades and forms
We supply several forms to suit different formulating and dosing setups. If you need a size that is not listed, ask us.
| Grade | Form | Assay | Typical use | Packing |
|---|---|---|---|---|
| Technical grade magnesium hydroxide powder | white free-flowing powder | — | General industrial alkalinity duty and acid neutralisation, and use as the feed material where the hydroxide is calcined onward to magnesium oxide. | Confirm the required pack format with the quotation. |
| Ground mesh grades | white powder ground to a stated mesh cut | — | Dry blending and mineral filler work where the sieve cut decides dispersion and handling behaviour; name the cut wanted, such as 200 mesh. | Confirm the required pack format with the quotation. |
| Flame-retardant grade (MDH) | fine white powder, untreated or surface treated | — | Halogen-free flame retardant and smoke suppressant loading in wire and cable compounds, polyolefin compounds and similar polymer systems. | Confirm the required pack format with the quotation. |
| Water-treatment grade powder | white powder for slurry make-up on site | — | Effluent neutralisation, alkalinity correction and heavy-metal precipitation where a milder alkali than caustic soda is preferred. | Confirm the required pack format with the quotation. |
| Magnesium hydroxide slurry | white aqueous slurry | — | Continuous pumped dosing into wastewater or flue-gas circuits, which removes dry powder handling and on-site make-up from the plant. | Packing is confirmed with the quotation, and the solids content is agreed with the enquiry. |
How to buy magnesium hydroxide from ChemTrade
Request a quote for magnesium hydroxide
Use the form below to request a quotation. You can also email sales@chemtrademalaysia.com or send us a message on WhatsApp.
Specifications
| Parameter | Value | Method |
|---|---|---|
| Appearance | white free-flowing powder, or white aqueous slurry according to form | — |
| CAS number | 1309-42-8 | — |
| Molecular formula | Mg(OH)2 | — |
| Molecular weight | approximately 58 g/mol | — |
| Water solubility | practically insoluble; disperses to a mildly alkaline suspension rather than dissolving | — |
| Thermal behaviour | decomposes endothermically on strong heating, giving off water vapour and leaving magnesium oxide | — |
| Particle size | ground to a stated mesh cut or particle-size distribution; name the cut your specification sets | — |
| Common grade checks | Mg(OH)2 content, particle size, whiteness, moisture, surface treatment and, on slurry, solids content against the grade required | — |
Magnesium Hydroxide applications
Safety and handling
Keep powder sealed and dry and away from acids, since neutralisation releases heat. Control dust when transferring and use gloves and eye protection. Slurry settles when it stands, so keep it agitated or recirculated before dosing.
Common questions about magnesium hydroxide
Is magnesium hydroxide the same as magnesium oxide?
No. Magnesium oxide is the calcined material and magnesium hydroxide is the hydrated form, so they differ in magnesium content per tonne and in how they behave once wetted. A dose or a compound loading worked out for one is wrong for the other, so order each by name.
How does magnesium hydroxide compare with aluminium hydroxide in a flame-retardant compound?
Both are mineral flame retardants that act by releasing water, but they are separate products and release it across different temperature ranges, which is why magnesium hydroxide is picked for compounds processed hotter. Loading, surface treatment and smoke behaviour follow the polymer, so state the resin and the extrusion temperature with the enquiry.
Should I order powder or slurry?
Powder suits plants that already have make-up and dosing equipment, or any compounding line, and it avoids paying freight on water. Slurry suits continuous dosing where nobody wants to handle dry material, at the cost of tankage, agitation and a shorter practical holding time.
Why use magnesium hydroxide instead of caustic soda for effluent neutralisation?
Its low solubility makes it self-limiting, so pH climbs more gradually and overshoot is harder than with a strong alkali, and the resulting sludge is generally denser and easier to dewater. The trade-off is a slower reaction, so contact time and mixing have to be designed for it rather than assumed.
Which grade and particle size suit halogen-free flame-retardant compounding?
Compounders normally work with fine grades, often surface treated to improve dispersion and to keep the compound processable at high loading. Mesh cuts such as 200 mesh describe a ground sieve fraction rather than a compounding fineness, so send the particle-size distribution or the mesh cut your specification names.
What details are needed for a magnesium hydroxide price enquiry?
Send the form, grade, particle size or slurry solids, the application, shipment quantity and expected annual volume, and the delivery location. Mention any packing preference and documentation you need so the quotation covers the whole requirement.