Magnesium hydroxide
HS code 281610Formula Mg(OH)₂
Magnesium hydroxide is a mild, safe alkali for neutralising acidic effluents and a halogen-free flame retardant for polymers. We trade fine white powder with a minimum purity of 96 %.
- Wastewater pH control
- Chemical neutraliser
- Flame-retardant additive
- Antacid uses, grade dependent

Specification
| Property | Typical | Unit | Method |
|---|---|---|---|
| Mg(OH)₂ | 97.5 | % | Gravimetric |
| CaO | 1.8 | % | AAS |
| Chloride | 0.1 | % | AAS |
| Fe₂O₃ | 0.01 | % | AAS |
| Al₂O₃ | 0.06 | % | AAS |
| SiO₂ | 0.10 | % | AAS |
| Mn | < 50 | ppm | ICP |
| Cr | < 1 | ppm | ICP |
| Ni | < 10 | ppm | ICP |
| Cu | < 4 | ppm | ICP |
| Moisture | < 0.5 | % | Gravimetric |
| Loss on ignition | 30 | % | Gravimetric |
Typical values from current supply. The binding values are those on the contract and the Certificate of Analysis for each lot.
Available forms
- Fine white powder
Grades
- Purity min. 96 %
Packaging
- 25 kg woven PP bags with liner, palletised
- 25 kg woven PP bags with liner in jumbo bags
- Bulk in open-top vessels and barges
Main applications
- Wastewater treatment
- Flame retardant
- Medical and antacid uses, grade dependent
Trade terms
- Supply in 20' and 40' containers, or in bulk where noted
- Every bag labelled with batch number and net weight
- Certificate of Analysis (COA) with each shipment
- Technical data sheet (TDS) and MSDS on request
- Free samples for qualification
- FOB or CFR offers, lot sizes to suit your programme
Values that set the price
- Mg(OH)₂ content and trace metals
- Bag type and palletising
- Lot size and loading port
- Destination port for CFR offers
Ask for a price on Magnesium hydroxide
Send grade, quantity, packaging and destination port. We reply with an offer and the matching data sheet.