Analytical grade magnesium carbonate is also known as reagent grade magnesium carbonate, molecular weight: 365.31. Due to its high purity, micro impurities and high fineness, it is widely used in high-end industries such as phosphors, lithium batteries, and liquid crystal glass.
Physical and chemical properties: Magnesium carbonate is a white monoclinic crystal or amorphous powder. The composition is generally expressed as x MgCO3· y Mg(OH) 2· z H2O. There are several ratios of x, y, and z, which can be 4:1:4, 4:1:5, 4:1:6, 4:1:7, 3:1:3, 3:1:4. Non-toxic, odorless, and stable in the air. Relative density 2.16. Slightly soluble in water, the aqueous solution is weakly alkaline. The solubility in water is 0.02% (15℃). It is easily soluble in acid and ammonium salt solutions, and decomposes to release carbon dioxide when it encounters dilute acid. It decomposes when heated to above 300℃ to produce water, carbon dioxide and magnesium oxide.
Uses: Magnesium carbonate is used as an excellent filler and reinforcing agent for rubber products. It can be used as a heat-insulating, high-temperature resistant fireproof and heat-insulating material. Asbestos light magnesium carbonate is an excellent insulating material used in shipbuilding and boiler manufacturing. It can also be used to manufacture high-grade glass products, magnesium salts, pigments, paints and daily chemicals. It is used as an antacid in medicine. It can also be used as a desiccant, color preservative, carrier, and anti-caking agent.
Preparation method: brine, limestone carbonization method, soda ash method, ammonium carbonate method
Hebei Messi Biology Co., Ltd. strives for excellence in technology and adopts high-purity and pollution-free carbonization technology in western Qinghai to produce AR-grade magnesium carbonate. At present, all technical indicators of the product are leading the world’s advanced level. The company has obtained ROHS EU international certification, which has laid a solid foundation for the “Messi Biology” brand in the world’s high-end magnesium salt brand industry.