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Crys-Talc® 7H-7HC
- Chemical Name
- Talc
- Chemical Family
- Silicates
Crys-Talc® 7H-7HC is a high-brightness, ultrafine, micro-lamellar talc that is recommended for nucleation of polymers and for film and thin-gage polymer applications. It significantly increases the crystallization temperature of semicrystalline polymers, including polyolefins, polyamides, and polyesters. Crys-Talc® 7H also enhances the stiffness, HDT, and dimensional stability of polymer compounds. The high brightness and micro-crystallinity of the talc ore used make Crys-Talc® 7H ideal for film or thin sheet applications that require optimum optical properties, e.g., high clarity and low haze. Crys-Talc® 7HC is the compacted form of Crys-Talc® 7H and is recommended for maximum extruder throughput, minimum dust, and improved dispersion.
Product families
Plastics — Polymer Additives
- Performance Additives
Other characteristics
- Brand
- Crys-Talc
- End Uses
- Film, Sheets
- Synonyms
- Agalite, Talc (Mg3H2(SiO3)4), Talcum
- Functions
- Nucleating Agent
- Processing Methods
- Extrusion
- Compatible Polymers & Resins
- Polyamides, Polyesters, Polyolefins
- Technology
- Plastics
- Material Features
- Dimensional Stability
- Excellent Brightness
- High Clarity
- High Heat Deflection Temperature
- High Stiffness
- Low Haze
- Country Availability
- Canada
- USA
- Compatible Polymers and Resins
- Polyamides
- Polyesters
- Polyolefins
- Plastics and Elastomers End Uses
- Film
- Sheets
- Plastics and Elastomers Functions
- Nucleating Agent
- Plastics and Elastomers Processing Methods
- Extrusion
Technical data
Table 1 of 3
8 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Fineness of Grind | 7.0 | — | Hegman gauge |
| Particle Size (Passing through 325 Mesh) | 99.9 | % | — |
| Brightness | 91.0 | — | Minolta “Y” |
| Surface Area | 21.0 | m²/g | — |
| Specific Gravity | 2.8 | — | — |
| Moisture Content | max. 0.5 | wt% | — |
| Loose Bulk Density | 10.0 | lbs/ft³ | — |
| Compacted Bulk Density | 48.0 | lbs/ft³ | — |
Table 2 of 3
1 row| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Median Diameter | 1.9 | microns | Sedigraph |
Table 3 of 3
2 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Talc Content | min. 95 | % | X-Ray Diffraction |
| Carbonates Content | max. 5 | % | X-Ray Diffraction |
