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| Supercoat |
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| Calcium carbonate |
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| Calcium carbonate coated with < 2% stearic acid |
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| 1317-65-3 |
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SUPERCOAT is a coated, extra fine ground natural calcium carbonate.
SUPERCOAT'S finer particles along with its hydrophobic coating develop improved physical properties, particularly impact resistance, in plastic compounds. |
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Typical Physical Characteristics:
Mean Particle Size: Microns: 1.0
Hegman Fineness: 7.0
Color: White
Surface Area: BET-m+-/gm: 7.2
pH: 5% slurry: 9.3-9.9
Specific Resistance: ohm-cm: 20,000
Apparent Dry Bulk Density:
Loose: Ibs/ft: 45
Compacted: Ibs/ft: 62
Powder Bulk Ratio: 0.37
Oil Absorption: Rubout: 16
Typical Chemical Analysis (Wt. %):
Moisture: 0.1 max.
Calcium Carbonate-CaCO3: 97.6
Magnesium Oxide-MgCO3: 1.5
Aluminum Oxide-Al2O3: 0.18
Iron Oxide-Fe2O3: 0.08
Silicon Dioxide-SiO2: 0.25
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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