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| Micro-White 25 |
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| Calcium carbonate |
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| 1317-65-3 |
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MICRO-WHITE 25 is a fine ground natural calcium carbonate available in either dry or slurry form.
The particle size, color, and fineness of MICRO-WHITE 25 suggests its use in a wide variety of application such as PVC compounds, filled polyolefins, rubber compounds, water and solvent coatings systems, as well as caulk and sealants.
MICRO-WHITE 25 is designed to have excellent dispersion properties as well as low water demand in aqueous systems. |
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Typical Physical Characteristics:
Mean Particle Size: Microns: 3.0
Hegman Fineness: 6.0
Dry Brightness: Hunter D-25: 95
Surface Area: BET-m 2/gm: 3.0
pH: 5% Slurry: 9.3-9.9
Specific Resistance: 5,000
Apparent Dry Bulk Density:
Loose: Ibs/ft 3: 45
Compacted: Ibs/ft 3:72
Powder Bulk Ratio: 0.43
Oil Absorption: Rubout: 15
Typical Chemical Analysis (Wt. %):
Moisture: 0.2 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: lbs./ft 3: 169
Wt. per Solid Gallon: 22.57
Bulking Value: one Ib. 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 |
| 제품관련분야 |
첨가제, 페인트,잉크, 플라스틱,폴리머,수지, 고무,고무첨가제 |
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