Synthetic Magnesite

 Chinese

[Characteristics]
* Magnesite consists of cubic crystals with uniform particle diameters and has a sharp particle size distribution.
* Magnesite is pure anhydrous Magnesium carbonate. As it has no crystal water it has excellent heat stability and is
stable up to about 500C.
* Magnesite is a heavy powder with low specific surface area and the powder has excellent flowability.
* Magnesite has a low specific gravity and has a relatively high heat conductivity for inorganic material. Magnesite can be
used as a heat conductive filler.
* As magnesite is a soft crystal, abrasion of molds etc. is low when using it as a filler.
<Characteristics of Magnesite>
Chemical Formula MgCO3
Formula Weight 84.33
Figure of Crystal Cube
Specific Gravity 3.04
Heat Thermal Conductivity 15W/mK
Mohs Hardness 3.5
Kick-off Temperature About 500C
Refractive Index 1.7
[Typically Characteristic Analysis]
Brand name MSPS MSL MSS
Specific Surface Area (BET) m2/g 0.1 0.5 16
Average Particle Size um 20 8 1.2
Bulk density g/ml 1.2 0.85 0.66
Moisture % 0.04 0.05 0.3
Ig-loss % 51.6 51.5 51.7
MgO % 47.8 48.6 47.1
Ca % 0.06 0.19 0.24
S ppm 120 160 240
Cl ppm 5 5 10
Na ppm 7 7 30
K ppm 2 2 5
B ppm 200 260 260
Al ppm 10 60 100
P ppm 50 50 50
Fe ppm 10 70 90
Si ppm 40 200 350


[SEM photographs]
MSPS MSL MSS
[Particle size distribution]
MSPS MSL MSS