light magnesium oxide
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Light magnesium oxide is a white, fluffy powder with low density. It’s made through rapid heating and vaporization, resulting in fine, lightweight particles with a large surface area.
It absorbs water well and is used in rubber, plastics, coatings, and as a filler in food and pharmaceuticals. Simply put, it’s a lightweight but highly versatile material!
Nomenclature:
CAS No.: 1309-48-4
Molecular formula: MgO
Molecular weight: 40.30
Synonyms: Magnesium oxide, Oxide
Physical Properties of Light Magnesium Oxide
Appearance: Light magnesium oxide is a white or grayish-white loose powder, very light with fine particles and a smooth surface.
Density: The density is low, typically between 0.2-0.6 g/cm³, making it lighter than regular magnesium oxide due to its loose particle structure.
Melting Point: The melting point is very high, around 2852°C, giving it excellent heat resistance.
Specific Surface Area: Light magnesium oxide has a large surface area, typically between 20-60 m²/g, enhancing its adsorption and reactivity.
Solubility: It has low solubility in water but can react with acids to form soluble salts.
Hardness: The hardness is relatively low, around 5 on the Mohs scale, though it still has some rigidity and compressive strength.
Thermal Conductivity: It has poor thermal conductivity, offering good insulation properties due to its loose structure.
Hygroscopicity: Light magnesium oxide is highly hygroscopic and can absorb moisture from the air, so it should be stored in a dry environment.
Light magnesium oxide application range
Refractory Materials
rubber
plastic
Paints and Varnishes
Medicine and Food
Agriculture
Light magnesium oxide is mainly used in metallurgy, smelting, the manufacture of refractory materials and moisturizing materials. It is also widely used in rubber, rubber sheets, rubber products, pharmaceutical industry, food industry, plastic sheet promoter, glass fiber reinforced plasticizer and silicon steel sheet surface coating paint, paper production filler and reinforcing agent, steel ball polishing agent, leather treatment agent, insulating material, grease, dye, ceramics, desiccant, resin, flame retardant as filler and reinforcing agent for rubber and plastic products, soft ferrite, adhesive, chemical industry as catalyst and manufacture of other magnesium compounds, enamel, ceramics, glass and other raw materials.
MAGKING Light Magnesium Oxide Specifications
| Project | Index | |||||
| Category I | Category II | |||||
| Class A | Class B | Class C | Class A | Class B | Class C | |
| Magnesium oxide (MgO)≥ | 95 | 93 | 92 | 95 | 93 | 92 |
| Calcium oxide (CaO)≤ | 1 | 1.5 | 2 | 0.5 | 1 | 1.5 |
| hydrochloric acid%≤ | 0.1 | 0.2 | — | 0.15 | 0.2 | — |
| Sulfate (SO4)%≤ | 0.2 | — | — | 0.5 | 0.8 | 1 |
| Screen residue (150 ㎛)%≤ | 0 | 0.03 | 0.05 | 0 | 0.05 | 0.1 |
| Iron (Fe)%≤ | 0.05 | 0.06 | 0.1 | 0.05 | 0.06 | 0.1 |
| Manganese (Mn)%≤ | 0.003 | 0.01 | — | 0.003 | 0.01 | — |
| Chloride (CL)%≤ | 0.07 | 0.2 | 0.3 | 0.15 | 0.2 | 0.3 |
| Loss on ignition %≤ | 3.5 | 5 | 5.5 | 3.5 | 5 | 5.5 |
| Bulk density (g/ml)%≤ | 0.16 | 0.2 | 0.25 | 0.2 | 0.2 | 0.25 |
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Advantages and Disadvantages of Light Magnesium Oxide
Light magnesium oxide is known for its high heat resistance, with a melting point of about 2852°C, making it ideal for high-temperature applications. Its low density also gives it excellent thermal insulation properties.
It can absorb moisture from the air, which makes it useful in moisture control and certain chemical processes. Additionally, it’s chemically stable, environmentally friendly, and non-toxic.
However, light magnesium oxide has some downsides. It needs to be stored in dry conditions to avoid moisture absorption. Its fine particles can create dust, which poses a health risk, and its low hardness makes it prone to damage in harsh conditions.
In summary, light magnesium oxide is highly versatile but needs careful handling and storage to get the most out of its benefits.
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