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Hubercarb® G2
- CAS Number
- 471-34-1
- EC Number
- 207-439-9
- Chemical Name
- Calcium Carbonate
- Chemical Family
- Calcium Salts, Carbonates, MicaCalcium SaltsCarbonatesMica
Hubercarb® G2 is a high purity, ultra-fine ground calcium carbonate produced from a high brightness marble deposit in Georgia for applications that require high brightness or pure tints. Carefully controlled particle distribution allows G2 to be used in paints, coatings, PVC compounds, rubbers, plastics, and drilling fluids.
Properties
- Physical Form
- Powder
- Solid
Identification
- CASE Ingredients Functions
- FillerFlame Retardant
Product families
Applications
Adhesives & Sealants — Building & Construction
- Sealants & Caulks
Building & Construction — Building Materials
- Sealants & Caulks
Electrical & Electronics — Wire & Cable
- Other Wire & Cable Applications
Product Families
CASE Ingredients — Additives
- Fillers & Extenders
- Functional Additives
Other characteristics
- Brand
- Hubercarb
- Functions
- Filler, Flame Retardant
- Particle Size
- 2.0 - 2.0 microns
- Markets
- Adhesives & Sealants
- Building & Construction
- Electrical & Electronics
- 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 | 1.1 | % |
Table 2 of 4
10 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Acid Solubility (in HCl) | 95 - 98.5 | % | — |
| Brightness (Hunter reflectance) | 95.0 | % | — |
| Compacted Bulk Density | 55 | lb/ft³ | ASTM C110 |
| Loose Bulk Density | 39 | lb/ft³ | ASTM C110 |
| Mesh size (+325) (45μm) | 0.005 | % | — |
| Median Particle Size (Sedigraph®) | 2.0 | μ | — |
| OIl Absorption | 19.0 | lbs oil / 100lbs | ASTM D281 |
| Hegman Grind | 6.5 | — | — |
| Moisture | 0.2 | % | ASTM D280 |
| Water Demand | 69.0 | 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 |
