Wollastonite

Wollastonite is chemically known as Calcium Meta Silicate denoted as CaSiO3. Wollastonite Mineral is a naturally occurring white & acicular (needle shaped) mineral, with mohs hardness of 4.5. It is alkaline in nature, inert, has low loss on ignition, low water solubility, low co-efficient of linear thermal expansion and a melting point of 15400c. Wollastonite is used in various industrial applications as it improves tear strength, dielectric properties and retains mechanical properties at elevated temperatures. Additionally, we are one of the major Garnet Wollastonite Exporters and Suppliers in India.
Typical Chemical Properties Percentage
Calcium Oxide Cao 45.5 - 47.00Silica Sio2 48 - 49.50Maganesium Oxide Mgo 0.20Alumina Al2o3 0.60Ferric Oxide Fe2o3 0.43Titanium Dioxide Tio2 TracesManganese Oxide Mno 0.29Sodium Oxide Na2o 0.02Potassium Oxide K2o 0.11Loss On Ignition Loi 1.80 - 4.5
Typical Physical Properties
Chemical Formula Casio3Molecular Weight 116Form & Habit Bladed Crystal MassesCrystal System Triclinic ( Acicular )Colour Brillant WhiteLustre PearlyBrightness 78% to 92%Refractive Index 1.627Specific Gravity 2.9Bulk DensityLoose 0.33 to 0.55 Gm / Ml Tapped 0.60 to 0.95 Gm / Ml Hardness 4.5 ( Moh’s Scale )Oil Absorption 40 to 65 ( W/w )Ph of 10% Slurry ( Freshly Prepared ) 9.0 ( At Ambient )Solubility in Water 0.01%Melting Point 15400cCo-efficent of Expansion 6.5 X 10-6 (e0)-1Thermal Conductivity 350-600 C 2.16 (gm/cal ) ( Sec-0cx103)Chemical Activity Largely Inertdecomposes in Acids.Specific Heat 0.24 Cal / Gm0 C