VANSIL® Wollastonite is a high brightness mineral filler and functional extender pigment for paint. Its relatively high pH (10-11) helps maintain the pH of latex paints in the desired range of 8-9. Both high aspect ratio and low aspect ratio grades are available.

Product Description BenefitsApplications
Vansil® HR-1500Vansil® HR-1500 is a Wollastonite (Calcium metasilicate). Short-needle, high aspect ratio wollastonite (3¼ Hegman fineness). It has low binder demand and low water solubility. Used in high build coatings such as texture paints and mastics to improve mud crack resistance and give film reinforcement.
Vansil® HR-2000Vansil® HR-2000 is a Wollastonite (Calcium metasilicate). Short-needle, high aspect ratio wollastonite (0-1 Hegman fineness). It has low binder demand and low water solubility. Used in high build coatings such as texture paints and mastics to improve mud crack resistance and give film reinforcement
Vansil® W-10Vansil® W-10 is a Wollastonite (Calcium metasilicate). Coarse grade of wollastonite with approximately 20% retained on a 325 mesh sieve. It has low binder demand and low water solubility. Useful as an extender in high build coatings such as block fillers and texture paints.
Vansil® W-20Vansil® W-20 is a Wollastonite (Calcium metasilicate). A relatively coarse (1 Hegman fineness) low aspect ratio grade of wollastonite. It has low binder demand and low water solubility. Used as a general purpose extender pigment where ultra-fineness is not required such as texture paints and block fillers.
Vansil® W-30Vansil® W-30 is a Wollastonite (Calcium metasilicate). A medium fineness (4 Hegman fineness) low aspect ratio grade of wollastonite. It has low binder demand and low water solubility. Used as a general-purpose mineral filler in a wide range of liquid coatings and powder coatings. May be used as a TiO2 spacer and extender.
Vansil® W-40Vansil® W-40 is a Wollastonite (Calcium metasilicate). Fine particle (5 Hegman fineness) low aspect ratio grade of wollastonite. It has low binder demand and low water solubility. Used as a general-purpose mineral filler in a wide range of paint and coatings. It is used as a TiO2 spacer and extender.
Vansil® W-50Vansil® W-50 is a Wollastonite (Calcium metasilicate). The finest of the low aspect ratio grades of VANSIL (6+ Hegman fineness). It has low binder demand and low water solubility. Used for liquid industrial and corrosion resistant coatings, powder coatings and semi-gloss architectural coatings. In powder coatings, this grade is desirable for smoother films and improved gloss.
Vansil® WGVansil® WG is a Wollastonite (Calcium metasilicate). Relatively coarse particle, high aspect ratio wollastonite. It has low binder demand and low water solubility. Used in high build coatings such as texture paints and mastics to improve mud crack resistance and give film reinforcement
This is a snapshot of the products that we have available, please contact your A S Harrison & Co representative for a discussion on the products appropriate for your applications.

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