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Hubercarb® W3
Hubercarb® W3 is a 4-micron calcium carbonate produced in Quincy, IL containing an extremely low level of crystalline silica content for paints, coatings, adhesives, caulks and sealants applications.
Properties
- Physical Form
- Powder
- Solid
Identification
- CASE Ingredients Features
- Good Shrinkage ResistanceThermal Resistance
- CASE Ingredients Functions
- Binder & ResinFiller
Product families
Applications
Applications
- Paints & Coatings — Other Paints & Coatings Applications
Industrial — Oil, Gas & Mining
- Exploration & Upstream
Product Families
CASE Ingredients — Additives
- Fillers & Extenders
Other characteristics
- Brand
- Hubercarb
- Functions
- Binder & Resin, Filler
- Particle Size
- 4.0 - 4.0 microns
- Oil Absorption
- 15.0 - 15.0 g/100 g
- Compatible Polymers & Resins
Alkyds, Cement, Epoxies (EP), Polyesters, Polyolefins, Polyurethanes (PU), Polyvinyl Chloride (PVC)
- Markets
- Industrial
- Paints & Coatings
- Technology
- CASE Ingredients
- Labeling Claims
- Other Labeling Claims
- HIGHLIGHTS
- Controlled fine particle distribution
- High surface area
- Round particle shape
- Low moisture
- Low silica content
- Recommended Applications
Applications for W3 include calcium source for animal feed and nutrition formulations, compression molded plastics, PVC compounds, rubber, plastics, and oilfield drilling fluids where its 99%+ calcium carbonate content yields almost complete acid solubility.
- Compatible Polymers and Resins
- Alkyds
- Cement
- Epoxies (EP)
- Polyesters
- Polyolefins
- Polyurethanes (PU)
- Polyvinyl Chloride (PVC)
Technical data
Table 1 of 4
4 rows| Characteristic | Value | Unit |
|---|---|---|
| Calcium Carbonate | 99.3 | % |
| Magnesium Carbonate | 0.4 | % |
| Silica and Silicates | 0.05 | % |
| Other | 0.2 | % |
Table 2 of 4
10 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Acid Solubility (in HCl) | 6 | % | — |
| Brightness (Hunter reflectance) | 92.0 | % | — |
| Compacted Bulk Density | 99.8 | lb/ft³ | ASTM C110 |
| Loose Bulk Density | 55 | lb/ft³ | ASTM C110 |
| Mesh size (+325) (45μm) | 0.005 | % | — |
| Median Particle Size (Sedigraph®) | 4.0 | μ | — |
| OIl Absorption | 15.0 | lbs oil / 100lbs | ASTM D281 |
| Hegman Grind | 4.5 | — | ASTM D1210 |
| Moisture | 0.1 | % | ASTM D280 |
| Water Demand | 50.0 | mL/100 gms | — |
Table 3 of 4
3 rows| Characteristic | Value | Method |
|---|---|---|
| Specific Gravity | 2.7 | ASTM D153 |
| Color | White | — |
| pH (Saturated Solution) | 9.4 | ASTM D1208 |
Table 4 of 4
7 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Hardness (Mohs) | 3 | — | — |
| Linear Expansion Coefficient | 4.3 x 10^-6 | °C | — |
| Solubility (H₂O, 100°C) | 0.0035 | g/100ml | — |
| Weight per Gallon (s.g. x 8.345) | 22.6 | lbs | — |
| Particle Shape (Microscope) | Irregular, uniaxial | — | — |
| Refractive Index (Hand. Of Chem. & Phy) | 1.6 | — | — |
| Alkalinity (as NaOH) | 0.4 | mg/gm | ASTM D1208 |
