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Bright white, fine talc for making grounds, paint and pastels. Our talc is dry ground from natural ores in Montana. Use as an additive to make grounds and for adding texture and body to paints.

Bright white, fine talc for making grounds, paint, and pastels. Our talc is dry ground from an extensive deposit of high-quality Montana talc ore. It has low oil absorption in oil and solvent-borne paint and primers. The chemically inert nature of talc improves the weatherability of paint. The hydrophobic nature of talc surface contributes to the rheological (flow) properties (anti-sag, leveling, and brush ability) and functional properties (gloss and sheen control) of paint. 


Use as an additive to make grounds and add texture and body to paints. Add talc to oil colors and mediums to create texture and increase the body of oil paint without affecting the color. Talc has a low refractive index that has little effect on oil colors, so it can be added to oil paint without significantly affecting the tint of the color. Add to pigment pastes for making pastels. Use in grounds to provide a soft surface.

Chemical NameMagnesium Silicate
DescriptionA fine dry ground talc with a closely-controlled particle size distribution
Chemical Analysis
Silicon Dioxide (SiO2)61%
Magnesium Oxide (MgO)31%
Calcium Oxide (CaO)<0.5%
Aluminum Oxide (Al2O3)1%
Iron Oxide (Fe2O3)<1.3%
Moisture Loss @110º C.<0.5%
Loss on Ignition5.5%
Typical Physical Properties
Median Particle Size (microns)37
Hegman Fineness (minimum)54
Dry Brightness (Hunter Y, Rd Value)8786
Retained on 325 Mesh Screen
Oil Absorption34 g oil / 100 g pigment30 g oil / 100 g pigment
Bulk Density (Loose)0.26 g/cc (16.0 lbs./ft3)0.26 g/cc (16.0 lbs./ft3)
Tap Density (Packed)0.56 g/cc (34.7 lbs./ft3)0.80 g/cc (49.0 lbs./ft3)
Bulking Value (Weight/Solid gallons, lbs.)23.323.3
Specific Gravity2.82.8
More Information
BrandRublev Colours
VendorNatural Pigments
Processing TimeUsually ships the next business day.
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