Alternate Names: Pioneer Ceramic Talc, Pioneer Talc, Pioneer 2882
Now called AmTalc
Texas Talc has a darker grey raw color and a rounder fluffier particle than other talcs. However it fires very white and is desired for its consistency. It is commonly used in ceramic slurries for low temperature greenware. Pioneer talcs are non-asbestiform.
Various grades are available.
Acid Solubles: 2-4
Water Solubles: -.1
Dry Brightness: 58-65
Dry Brightness after firing: 88+
Specific gravity: 2.7
Tapped Density: 75-85 lbs/ft3
Loose Density: 35-45 "
One Lb. Bulks, Gallons: .04
Oil Absorption: 32
Hegman Fineness: 1.0
Thru 200 mesh, %: 97.0
Thru 325 mesh, %: 85.0
Median Particle Size: 19.0 microns
2882 Talc is the same except:
Fe2O3: < .69
Dry Brightness: 62.0
Pioneer 1599 is a platy Texas general purpose industrial talc.
Texas talc (left) quickly absorbs all the water poured on it. Montana talc (right) resists whetting of the particles much more, the water is just sitting on top and has not penetrated at all.
|Hazards||Talc Hazards Overview|
Materials that source Na2O, K2O, Li2O, CaO, MgO and other fluxes but are not feldspars or frits. Remember that materials can be flux sources but also perform many other roles. For example, talc is a flux in high temperature glazes, but a matting agent in low temperatures ones. It can also be a flux, a filler and an expansion increaser in bodies.