AR Magnesium Oxide
AR magnesium oxide is white amorphous powder. The relative density is 3.26~3.43. Odorless, tasteless and non-toxic. Soluble in acid and ammonium salt solution, insoluble in water and ethanol. Strong refraction in the visible and near ultraviolet range.
When exposed to air, magnesium oxide chemical is easy to absorb moisture and carbon dioxide and gradually become basic magnesium carbonate, which combines with water to form magnesium hydroxide, which is slightly alkaline reaction, and the pH of the saturated aqueous solution is 10.3. But magnesium oxide powder is very soluble in dilute acid, very slightly soluble in pure water, and its solubility is increased due to the presence of carbon dioxide. It is a mild catalyst. Relative density (d254) 3.58. Melting point 2852 ℃. Boiling point 3600℃.
