Specification :

English Name: Magnesium hydroxide

Molecular Formula: Mg(OH)2

Molecular Weight: 58.32

Physicochemical Properties: White crystalline or powder; and its aqueous solution show alkaline reaction; 2.36g/cm3. It is soluble in diluted acid and ammonium salt solution and almost insoluble in water and alcohol. Its solubility 18in water is 0.0009g/100g. It is easy to absorb carbon dioxide in the air. When it is heated to above 200 in alkaline solution, it will become hexagonal crystal system crystalline. At 350, it shall decompose into magnesium oxide and water, and change into magnesium oxide by losing water above 500.

Use: Magnesium Hydroxide is excellent flame retardant for plastics and rubber articles. In environmental protection field, it can replace caustic soda and lime as neutralizing agent for acid-containing wastewater. And it also can be used as additive for oil products with corrosion resistance and desulfurization functions. In addition, it can be used in electronic and medicine trade, refining of granulated sugar and also as thermal insulation material as well as for producing other magnesium salt.
Mark QHMS-F
CAS No. 1309-48-4
HS Code 28161000
Original Place China
Description This white powder is high purity food/feed grade magnesium oxide calcined from our high grade magnesium hydroxide. It has very low heavy metal and arsenic content.
Application It is well suited for many food/feed products as the additives.
Specification Mg£¨OH£©2 (ignited basis) 99% min.
Chloride 0.15% max
Sulphate 0.09% max.
Iron 0.007% max
Arsenic 5ppm max
Heavy metals 10ppm max
Calcium 0.005% max
Silicon 0.02% max
Particle Size D50=50 35um
Packing Net 25Kg or 50Kg paper bags with inner plastic lining. Other packing modes are available according to customers¡¯ request.
Storage Store in original packing in a dry, ventilated place. If the contents of a bag are not entirely used after opening, the bag should be immediately resealed.

Shelf life under suitable 12 months
storage conditions