|Monthly Tech-Tip |
Alternate Names: IT Talc
Vanderbilt Industrial Talcs are hydrous magnesium silicates. The are offered in various particle sizes. While talcs are usually thought of a soft materials, these contain appreciate amounts of other silicate minerals and can be somewhat abrasive.
Density (Mg/M3): 2.85
pH at 10% Solids: 9.4
-325mesh -10micron -5 micron -2.5micron
I.T. X 98 49 33 15
I.T. 3X 98 53 34 16
I.T. 5X 99.25 59 38 17
I.T. FT 99.4 62 40 17
I.T. 325 99.9 72 47 19
It is offered in various particle sizes. White talcs are usually thought of as soft materials, but this contains an appreciable amount of other silicate minerals which can be somewhat abrasive.
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.
Talc Hazards Overview
Talc is invaluable in the ceramics industry, it is used as a glaze and body ingredient and as a parting a release agent in various processes. Is it safe?