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| Kotamite |
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| Titanium dioxide |
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| 1317-65-3 |
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KOTAMITE is a coated fine ground natural calcium carbonate
The coating of KOTAMITE is non-water wetting (hydrophobic) offering specific advantages for oil or other non-aqueous compounds.
The lubricity of the coating aids in its easy dispersion into the resin matrix and the development of low melt viscosity for thermoplastic compounds, particularly rigid and flexible PVC. |
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Typical Physical Characteristics:
Mean Particle Size: Microns: 3.0
Hegman Fineness: 6.0
Color: White
Surface Area: BET-m 2/gm: 2.8
pH: 5% Slurry-untreated: 9.3-9.9
Specific Resistance: ohm-cm: 20,000
Apparent Dry Bulk Density:
Loose: Ibs/ft 3:50
Compacted: Ibs/ft 3: 80
Powder Bulk Ratio: 0.48
Oil Absorption: Rubout: 13
Typical Chemical Analysis (Wt. %):
Moisture: 0.1 max.
Calcium Carbonate-CaCO3: 97.6
Magnesium Carbonate-MgCO3: 1.5
Aluminum Oxide-Al2O3: 0.18
Iron Oxide-Fe2O3: 0.08
Silicon Dioxide-SiO2: 0.30
Manganese Oxide-MnO: 0.004
Heavy Metals: Less than 40 ppm
Physical Properties of Natural CaCO3: (Reference Values):
Specific Gravity: 2.71
Density: Ibs/ft 3: 169
Wt. Per Solid Gallon: 22.57
Bulking Value: one lb/bulks: 0.0443 gals.
Specific Heat: cal/gm/C: 0.2
Coefficient of Linear Expansion: in/in/C (0-100C): 9-12 x 10 -6
Index of Refraction: Mean: 1.59
Hardness: Mohs: 3.0 |
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