MAGNESIUM OXIDE(MAGNESIA)

'STARMAG' is light burned and reactive magnesium oxide of high purity, isolated from seawater with chemical process. Our company
can prepare magnesium oxide having a variety of reactivities.

STARMAG#150 is high activity, STARMAG #50 is medium activity, STARMAG #20 is low activity grade.
Each grade has special characteristics such as good dispersibility and workability for various polymers.

STARMAG CX are coated with special substances, and so these products show superior affinity, dispersibility and workability for
various polymers, and moisture proof, in case of blending with polymers.

STARMAG P and KS are pharmaceutical grade. STARMAG KS is granular, so it shows good workability and improves productivity.

StarmagPSF are fine powered of average particle size(1um) and high purity and high whiteness.


Typically Characteristic Analysis
Item of Quality #150 #50 #20 CX-150 P KS PSF-150 PSF
Chemical Analysis
Moisture (%)
0.5 0.5 0.5 0.5 0.5 0.5 1.5 0.5
Loss on Ignition (%)
6.5 2.5 1.5 13.0 1.0 1.0 6.5 1.0
MgO *1 (%)
98.0 97.7 97.7 98.0 98.1 98.1 99.5 99.5
CaO (%)
0.6 0.6 0.6 0.6 0.6 0.6 0.3 0.2
Fe (%)
0.02 0.02 0.02 0.02 0.02 0.02 0.003 0.004
Al (%)
0.01 0.01 0.01 0.01 0.01 0.01 0.004 0.003
Acid Insolubles (%)
0.01 0.01 0.01 0.01 0.08 0.08 0.01 0.01
Bulk Density (g/ml)
0.55 0.55 0.55 0.60 0.60 1.0 0.40 0.45
Average Particle Size *2 (um)
3.5 3.5 3.5 3.5 3.5 - 0.5 1.0
Specific Surface Area (BET) (m2/g)
145 50 25 110 10 10 145 10
Screen Residue (75um) (%)
0.01 0.01 0.01 0.01 0.10 - 0.001 0.001
*1 Measured After Ignition
*2 Measured by Laser Diffraction Method

Standard Packing
Net 20kg, 10kg in multiwall paper bags with separately sealed polyethylene inner bag


Main use

* Chloroprene Rubber / Chlorosulfanated Polyethylen
* Chloroprene Adhesive
* Various Synthetics Rubbers
* Various Plastics
* Ceramics / Glass / Ferrite		 * Food Additive
* Feed Additive
* Magnesia Cement / Grinding Wheel
* Absorbent
* Electrical Steel Sheets