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Magnesium oxide (MgO), with the chemical formula MgO, is an inorganic compound that appears as a white solid at room temperature. It boasts a high melting point, high boiling point, and excellent insulating properties, making it a typical alkaline earth metal oxide. Magnesium oxide exists naturally in the form of periclase and is an important raw material for magnesium metallurgy (or oxide production).
Parameter Name | Value |
---|---|
Chemical Formula | MgO |
Appearance | White, loose powder |
Density | 3.58 g/cm³ (at 25℃) |
Molecular Weight | 40.30 |
Water Solubility | 6.2 mg/L (at 20℃) |
Melting Point | 2800℃ |
Boiling Point | 3600℃ |
CAS Registry Number | 1309-48-4 |
EINECS Registry Number | 215-171-9 |
Magnesium oxide can be produced through various methods, including the carbonation process, calcination of magnesium hydroxide, soda ash process, and ammonium bicarbonate process. The choice of method often depends on the specific needs and characteristics of downstream industries. For example, the carbonation process can produce lightweight magnesium oxide, while the calcination of magnesium hydroxide can produce high-purity magnesium oxide.
Magnesium oxide consists of Mg²⁺ ions and O²⁻ ions bound together through ionic bonds to form a crystal lattice. At high temperatures, magnesium oxide exhibits excellent physical and chemical stability, making it a model system for studying crystal vibration characteristics. Additionally, magnesium oxide is widely regarded as the most effective metal stabilizer compared to silicate cement, lime, and others due to its superior buffering capacity, cost-effectiveness, and ease/safety of operation.
Magnesium oxide enterprises should establish an application technology department with professional technical service personnel. These personnel should possess extensive knowledge and experience in production processes, technology, and magnesium oxide applications, enabling them to provide professional technical support and solutions to customers.
Magnesium oxide should be stored in a cool, well-ventilated warehouse, avoiding direct sunlight and high temperatures. The warehouse should be kept away from fire sources and heat to prevent magnesium oxide from undergoing chemical reactions or fires due to high temperatures. The packaging of magnesium oxide should be intact to prevent leakage, damage, or dropping during transportation. According to the HG/T 2573-2012 standard, the packaging of industrial light magnesium oxide must comply with specific regulations.