light magnesium oxide

the vulcanization activator and active filler in the rubber industry CAS No.: 1309-48-4light magnesium oxideRelative molecular weight: 40.31Character: The white amorphous powder, not smelly, istasteless, non-toxic, the melting point approximately 2,825, the relative density 3.58, soluble in acid or ammonium salt solution, insoluble in water , the ethanol, the ether, the benzene and the toluene etc. organic solvent. Magnesia Lightcan take up water and carbon dioxide in the air to reate the magnesium carbonate duplicate salt which reduce the activity.Use: As the vulcanization activator and active filler in the rubber industry, also is the polyphenylene oxide synthetic catalyst, the bond, the padding of the paint and of the paper. In addition, it can be used as the raw material that makes the ceramic, the enamel and the firebrick, besides used in the medicine, dye, glass etc. industry. Quality specification (GB9004-88)Quality indexitemGrade AGrade BSuperior qualitymagnesia, ≥, %939295Loss in ignition,≤,%453calcium oxide,≤,%1.22.01.0Hydrochloric acid insolubles,≤,%0.2-0.1chloride,≤,%0.3-0.07sulphate (SO4²¯),≤,%0.30.40.2Iron salt(Fe),≤,%0.060.100.05manganese salt(Mn),≤%0.01-0.003Screen residue(40 holes/cm),≤,%0.050.050.005Screen residue(80sholes/cm),≤%--0.1Apparent specific volume (ml/g),≥,%65