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I.T. Talc

Alternate Names: IT Talc

Oxide Analysis Formula
CaO 7.00% 0.14
K2O 0.05% 0.00
MgO 30.70% 0.86
Na2O 0.05% 0.00
TiO2 0.05% 0.00
Al2O3 0.30% 0.00
SiO2 56.00% 1.05
Fe2O3 0.10% 0.00
Oxide Weight 106.15
Formula Weight 112.45


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.

Related Information


Materials Talc
Typecodes Flux Source
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.
Hazards 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?

By Tony Hansen

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