Industrial-grade magnesium oxide is an inorganic compound with the chemical formula MgO. It typically exists as a white solid or powder, insoluble in water but readily soluble in acids and ammonium chloride solution. This compound is characterized by its high stability, as it does not easily absorb moisture or deteriorate in air, and it can react with acids to form corresponding salts.

Industrial-grade magnesium oxide finds wide applications across various fields. In the electronics industry, its excellent insulating properties make it commonly used in manufacturing the insulation layers of cables and the cathodes of batteries. In the metal smelting industry, magnesium oxide is utilized as a lightweight thermal insulation material due to its excellent heat insulation performance. Additionally, it can serve as a material for casting molds, producing high-precision and high-quality castings. In the construction materials industry, after special treatment, magnesium oxide can be processed into various fire-resistant building materials such as fire-resistant coatings and fire-resistant boards. It is also used in the manufacture of high-grade ceramic products.

There may be differences in purity and processing methods between industrial-grade magnesium oxide and food-grade or other specialty-grade magnesium oxides. Therefore, when selecting and using magnesium oxide, it is essential to consider specific application requirements and industry standards.