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Crys-Talc® 7H-7HC

1 of 6 products in this brand
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.

Functions: Nucleating Agent

Compatible Polymers & Resins: Polyamides, Polyesters, Polyolefins

Processing Methods: Extrusion

End Uses: Film, Sheets

Synonyms: Agalite, Talc (Mg3H2(SiO3)4), Talcum

Technical Data Sheet

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Knowde Enhanced TDS

Identification & Functionality

Chemical Family

Silicates

Chemical Name

Talc

Plastics & Elastomers Functions

Nucleating Agent

Technologies

Plastics

Product Families

Plastics — Polymer Additives

Performance Additives

Features & Benefits

Materials Features

Dimensional Stability,

Excellent Brightness,

High Clarity,

High Heat Deflection Temperature,

High Stiffness,

Low Haze

Applications & Uses

Compatible Polymers & Resins

Polyamides,

Polyesters,

Polyolefins

Plastics & Elastomers End Uses

Film,

Sheets

Plastics & Elastomers Processing Methods

Extrusion

Properties

Typical Properties
ValueUnitsTest Method / Conditions
Fineness of Grind7.0—Hegman gauge
Particle Size (Passing through 325 Mesh)99.9%—
Brightness91.0—Minolta “Y”
Surface Area21.0m²/g—
Specific Gravity2.8——
Moisture Contentmax. 0.5wt%—
Loose Bulk Density10.0lbs/ft³—
Compacted Bulk Density48.0lbs/ft³—
Particle Size Distribution
ValueUnitsTest Method / Conditions
Median Diameter1.9micronsSedigraph
Mineral Properties
ValueUnitsTest Method / Conditions
Talc Contentmin. 95%X-Ray Diffraction
Carbonates Contentmax. 5%X-Ray Diffraction

Packaging & Availability

Country Availability

Canada,

USA

Regional Availability
  • Canada
  • USA