Magnesium Oxide [STARMAG®]

"STARMAG" is Konoshima's light burned Magnesium oxide produced from sea water.
We can offer various products for diverse applications.

STARMAG #150

STARMAG #150 is high-active product mainly used for vulcanizing agent for chloroprene rubber.

STARMAG M/P

STARMAG M/P are middle/low-active products.
They are mainly used for compounding agent or chemical raw material.

STARMAG PSF-150

STARMAG PSF-150 is high-active product with fine particles.
It has higher purity and whiteness than other products.

STARMAG G

STARMAG G is granular product with easy handling and good workability.

STARMAG CX-150

STARMAG CX-150 is high-active product with surface treatment to improve the dispersibility in polymer and adhesion resistance on mixing roller.

Typical Analysis
  #150 M P PSF-150 G CX-150
Screen residue(75μm)(%) 0.01 0.01 0.03 0.001 - 0.01
Loss on drying(%) 0.5 0.5 0.5 1.5 0.5 0.5
Loss on ignition(%) 6.5 2.5 1.0 6.5 1.0 13.0
Assay(as MgO)(%) 97.5 97.5 98.0 98.5 98.0 97.5
Soluble matter in water (%) 1.2 1.2 1.2 0.3 - -
Insoluble matter in HCl(%) 0.02 0.02 0.02 0.02 0.02 0.03
Calcium oxide(%) 0.7 0.7 0.7 0.3 0.7 0.7
Fe2O3 , Al2O3(%) 0.06 0.06 0.06 0.02 0.06 0.06
Bulk density(g/ml) 0.55 0.55 0.60 0.40 1.0 0.60
Specific surface area(m2/g) 145 50 10 145 10 130
Average particle size(µm) 3.5 3.5 3.5 0.6 - 3.5

Applications

  • *Chloroprene rubbers/Adhesives
  • *Glass
  • *Magnesia cement
  • *Synthetic rubbers(FKM,CSM,ECO,CIIR etc.)
  • *Catalysts
  • *Electrical steel
  • *Plastics
  • *Absorbents
  • *Feed additives
  • *Curing agent for Phenolic resin
  • *Chemical raw material
  • *Thickening agent for SMC/BMC