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Food additive magnesium oxide is light or heavy

Recently there are customers consulting food additive magnesium oxide, the volume of magnesium oxide (also called the bulk density) is not very well understood, today Hebei Messi Biology limited company for you to explain in detail the food additive magnesium oxide is light or heavy.

First of all, let\’s understand the difference between light magnesium oxide and heavy magnesium oxide, generally light and heavy is to distinguish the volume of magnesium oxide (bulk density), the volume is greater than or equal to 3 (bulk density less than 0.33) is light magnesium oxide, on the contrary, is heavy magnesium oxide.

Here we return to the food additive to consider the volume of magnesium oxide, in the food additive magnesium oxide GB1886.216-2016 standard, there is no requirement for the volume of magnesium oxide, so customers need to analyze according to their own products. Generally speaking, pressed tablets mostly use light magnesium oxide, capsules mostly use heavy magnesium oxide, the specific situation needs specific analysis.

Food grade magnesium oxide application areas: used as food additive, color stabilizer, pH adjuster as health care products, food magnesium supplements. Used as decolorizer for sugar refining ice cream powder pH regulator etc. As anti-caking agent and anti-acid agent used in wheat flour, milk powder chocolate, cocoa powder, grape powder, powdered sugar, etc.


Magnesium oxide (chemical formula: MgO) is an oxide of magnesium, an ionic compound. It is a white solid at room temperature. Magnesium oxide exists in nature in the form of magnesite, which is the raw material of magnesium smelting. It is white amorphous powder. Odorless, tasteless and non-toxic. Due to different preparation methods, there are light and heavy. It has strong refractive property in visible and near ultraviolet range. It absorbs water and carbon dioxide easily in open air and gradually becomes alkaline magnesium carbonate, light weight is faster than heavy weight, and combines with water to produce magnesium oxide, which is slightly alkaline reaction, pH 10.3 of saturated aqueous solution. but very soluble in dilute acid, very slightly soluble in pure water, and its solubility is increased by the presence of carbon dioxide, it is a mild catalyst. Insoluble in ethanol. Relative density (d254) 3.58. Melting point 2852°C. Boiling point 3600℃.

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