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Hubercarb® W3NT
Hubercarb® W3NT is a 3-micron calcium carbonate produced in Quincy, IL containing an extremely low level of crystalline silica content enhanced by a propreitary fatty acid based surface treatment.
Identification
- CASE Ingredients Features
- MattingThermal Resistance
- CASE Ingredients Functions
- Anti-Caking AgentFiller
Product families
Applications
Adhesives & Sealants — Building & Construction
- Sealants & Caulks
Paints & Coatings — Building & Construction
- Decorative Paints
Building & Construction — Building Materials
- Sealants & Caulks
Building & Construction — Decorative Materials & Finishes
- Decorative Paints Coatings & Stains
Product Families
CASE Ingredients — Additives
- Fillers & Extenders
- Functional Additives
Other characteristics
- Brand
- Hubercarb
- Features
- Matting, Thermal Resistance
- Functions
- Anti-Caking Agent, Filler
- Particle Size
- 3.0 - 3.0 microns
- Labeling Claims
- Other Labeling Claims
- Compatible Polymers & Resins
Acrylics, Alkyds, Alkyds (Long Oil), Epoxies (EP), Polyesters, Polyolefins, Polyurethanes (PU), Polyvinyl Chloride (PVC)
- Markets
- Adhesives & Sealants
- Building & Construction
- Paints & Coatings
- Technology
- CASE Ingredients
- HIGHLIGHTS
Fine particle distribution; High surface area; Round particle shape; Low silica content are enhanced by processing with a proprietary fatty acid based surface treatment.
- Recommended Applications
Applications include coatings, compression molded plastics, PVC pipe, rubber, plastics, and adhesives.
- Compatible Polymers and Resins
- Acrylics
- Alkyds
- Alkyds (Long Oil)
- 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
9 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Acid Solubility (in HCl) | 99.8 | % | — |
| Brightness (Hunter reflectance) | 92.0 | % | — |
| Compacted Bulk Density | 55 | lb/ft³ | ASTM C110 |
| Loose Bulk Density | 50 | lb/ft³ | ASTM C110 |
| Mesh size (+325) (45μm) | 0.005 | % | — |
| Median Particle Size (Sedigraph®) | 3.0 | μ | — |
| OIl Absorption | 15.0 | lbs oil / 100lbs | ASTM D281 |
| Hegman Grind | 6.0 | — | ASTM D1210 |
| Moisture | 0.2 | % | ASTM D280 |
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 |
