Calcined magnesia
CAS 1309-48-4
EC 215-171-9
Formula MgO
MW 40.3 g/mol
Salts & Minerals Pharmaceuticals & HealthcareFood & NutritionPersonal Care & CosmeticsWater TreatmentAgriculture & FeedBuilding & ConstructionMining & Metals pH Regulation & BufferingCatalysisPreservation & Biocide
Description
Calcined magnesia (MgO, CAS 1309-48-4) is an inorganic mineral oxide produced by high-temperature calcination of magnesite. It is sold under trade names including Magcal, Maglite, Magmitt, and Magnesia. No E-code applies to this substance.
In water treatment, MgO dissolves to form magnesium hydroxide, raising pH and neutralising acidic effluents without the overshoot risk associated with strong alkalis. In pharmaceutical and food manufacturing, it functions as a buffering agent and mild antimicrobial, controlling microbial activity by disrupting cell membrane integrity at elevated pH.
Calcined magnesia is available in technical, food-grade (FCC), and pharmaceutical-grade (Ph.Eur.) specifications, with particle size and surface area varying by calcination temperature. The substance is registered under REACH and fully compliant with EU regulatory requirements. Standard packaging includes 25 kg bags and bulk quantities on request.
In water treatment, MgO dissolves to form magnesium hydroxide, raising pH and neutralising acidic effluents without the overshoot risk associated with strong alkalis. In pharmaceutical and food manufacturing, it functions as a buffering agent and mild antimicrobial, controlling microbial activity by disrupting cell membrane integrity at elevated pH.
Calcined magnesia is available in technical, food-grade (FCC), and pharmaceutical-grade (Ph.Eur.) specifications, with particle size and surface area varying by calcination temperature. The substance is registered under REACH and fully compliant with EU regulatory requirements. Standard packaging includes 25 kg bags and bulk quantities on request.
Physical Properties
| Melting Point | 2800 °C |
| Boiling Point | 3600 °C |
| Density | 3.58 g/cm³ |
| Flash Point | 3600°C |
| Appearance | Magnesium oxide forms a finely divided white particulate dispersed in air. |
| Color | White |
| Odor | wh. powd. or cryst., odorless |
| Form | nanopowder |
| Water Solubility | 6.2 mg/L (20 ºC), reacts |
| Refractive Index | 1.736 |
| pH | 10.3 (H2O, 20℃)(saturated solution) |
Safety & Handling (Learn More)
Warning GHS07
H
H319H335
P
P261P271P280P319P405P501P264+P265P304+P340P337+P317P403+P233P305+P351+P338
Trade & Regulatory
| HS Code | 25199010 |
| UN Number | 1418 |
| Storage Class | 11 - Combustible Solids |
| WGK (Germany) | 1 |
Other Names
Magnesium oxideoxomagnesiumMgOMagmittmagnesiaMagcalMaglite
Related Products
Raw Materials
Derivatives
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