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Hubercarb® Q325
Hubercarb® Q325 is a medium fine ground calcium carbonate produced at Huber’s Quincy, Illinois plant which is known for its natural uniformity producing consistent purity and brightness. Carefully controlled particle distribution allows Q325 to be used a wide range of applications including paints, coatings, adhesives, caulks, and concrete building products. Acid solubility above 95% makes Q325 ideal for use in oilfield drilling fluids.
Properties
- Physical Form
- Powder
- Solid
Identification
- CASE Ingredients Functions
- Filler
Product families
Applications
Adhesives & Sealants — Building & Construction
- Sealants & Caulks
Building & Construction — Building Materials
- Sealants & Caulks
Product Families
CASE Ingredients — Additives
- Fillers & Extenders
Other characteristics
- Brand
- Hubercarb
- Functions
- Filler
- Particle Size
- 13.0 - 13.0 microns
- Oil Absorption
- 14.0 - 14.0 g/100 g
- Compatible Polymers & Resins
- Cement, Polyolefins, Silicones
- Markets
- Adhesives & Sealants
- Building & Construction
- Technology
- CASE Ingredients
- Compatible Polymers and Resins
- Cement
- Polyolefins
- Silicones
Technical data
Table 1 of 4
4 rows| Characteristic | Value | Unit |
|---|---|---|
| Calcium Carbonate | 96.5 | % |
| Magnesium Carbonate | 2.0 | % |
| Silica and Silicates | 1.0 | % |
| Other | 0.5 | % |
Table 2 of 4
9 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Acid Solubility (in HCl) | 98.5 - 99 | % | — |
| Brightness (Hunter reflectance) | 86.0 | % | — |
| Compacted Bulk Density | 80 | lb/ft³ | ASTM C110 |
| Loose Bulk Density | 50 | lb/ft³ | ASTM C110 |
| Mesh size (-325) (45μm) | 99.5 | % | — |
| Median Particle Size (Cilas®) | 13.0 | μ | — |
| OIl Absorption | 14.0 | lbs oil / 100lbs | ASTM D281 |
| Moisture | 0.1 | % | ASTM D280 |
| Water Demand | 40.0 | 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 |
