Enhanced TDS
Knowde-enriched technical product data sheet
Identification & Functionality
- Chemical Family
- Chemical Name
- CASE Ingredients Functions
- CAS No.
- 471-34-1
- EC No.
- 207-439-9
- Technologies
- Product Families
Features & Benefits
- Labeling Claims
- CASE Ingredients Features
- Product Highlights
- Controlled ultra-fine particle distribution
- High surface area
- Round particle shape
- Low silica content
Applications & Uses
- Markets
- Applications
- Compatible Polymers & Resins
- Recommended Application
Applications for Optifil include coatings, inks, PVC pipe, rubber, plastics, and oilfield drilling fluids where its 99%+ calcium carbonate content yields almost complete acid solubility.
Properties
- Chemical Properties
- Physical Properties
- Typical Properties
- Mineral Properties
| Value | Units | Test Method / Conditions | |
| Calcium Carbonate | 99.3 | % | - |
| Magnesium Carbonate | 0.4 | % | - |
| Silica and Silicates | 0.05 | % | - |
| Other | 0.2 | % | - |
| Value | Units | Test Method / Conditions | |
| Acid Solubility (in HCl) | 99.8 | % | - |
| Brightness (Hunter reflectance) | 93.0 | % | - |
| Compacted Bulk Density | 70 | lb/ft³ | ASTM C110 |
| Loose Bulk Density | 50 | lb/ft³ | ASTM C110 |
| Mesh size (+325) (45μm) | 0.005 | % | - |
| Median Particle Size (Sedigraph®) | 1.7 | μ | - |
| OIl Absorption | 17.0 | lbs oil / 100lbs | ASTM D281 |
| Hegman Grind | 6.5 | - | ASTM D1210 |
| Moisture | 0.2 | % | ASTM D280 |
| Value | Units | Test Method / Conditions | |
| Specific Gravity | 2.7 | - | ASTM D153 |
| Color | White | - | - |
| pH (Saturated Solution) | 9.4 | - | ASTM D1208 |
| Value | Units | Test Method / Conditions | |
| 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 |