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Hubercarb® G325
Hubercarb® G325 is a high purity, medium fine ground calcium carbonate produced from a high brightness marble deposit in Georgia. Carefully controlled particle distribution allows G325 to be used a wide range of applications including paints, coatings, adhesives, caulks, and concrete building products. Acid solubility above 95% makes G325 ideal for use in oilfield drilling fluids.
Properties
- Physical Form
- Powder
- Solid
Identification
- Chemical Family
- Calcium Salts, Carbonates, Silicon-based CompoundsCalcium SaltsCarbonatesSilicon-based Compounds
- 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
- 10.5 - 10.5 microns
- Oil Absorption
- 15.0 - 15.0 g/100 g
- Markets
- Adhesives & Sealants
- Building & Construction
- Technology
- CASE Ingredients
Technical data
Table 1 of 4
4 rows| Characteristic | Value | Unit |
|---|---|---|
| Calcium Carbonate | 96.0 | % |
| Magnesium Carbonate | 2.5 | % |
| Silica and Silicates | 0.4 | % |
| Other | 1.5 | % |
Table 2 of 4
9 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Acid Solubility (in HCl) | 95 - 98.5 | % | — |
| Brightness (Hunter reflectance) | 93.5 | % | — |
| Compacted Bulk Density | 79 | lb/ft³ | ASTM C110 |
| Loose Bulk Density | 52 | lb/ft³ | ASTM C110 |
| Mesh size (-325) (45μm) | 99.0 | % | — |
| Median Particle Size (Sedigraph®) | 10.5 | μ | — |
| OIl Absorption | 15.0 | lbs oil / 100lbs | ASTM D281 |
| Moisture | 0.2 | % | ASTM D280 |
| Water Demand | 42.0 | ml/100g | — |
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 |
