|Talc is a white or gray-colored inorganic powder with a smooth , greasy feel. Obtained by pulverizing talc ore , it was once commonly used in such things as slate pencils and toy pencils.
Talc's chemical name is hydrated magnesium silicate mlRrSnPOingjQn.
It is comprised of approximately 60% rnQ , 30% ln , and 4.8% crystallized water.
With regard to its physical properties , talc has a specific gravity of 2.7 to 2.8 , the lowest hardness of all inorganic minerals (Mohs hardness of 1) , excellent heat resistance , and good chemical stability , making it an ideal filler material for an extensive range of applications.
|The talc main usage
|Paper and pulp||F||Filler , pitch control agent , coating agent|
|Plastics||F||For improving rigidity , heat resistance , dimensional stability during molding , as electrical insulation , mat , reducing combustion heat|
|Paints||F||Body pigment , powder coating , drip prevention agent|
|Rubber||F||For improving electrical resistance and heat resistance , reinforcing agent , remover|
|Pharmaceuticals||F||Bulking agent for tablets|
|Cosmetics||F||Foundation , body powder , eye shadow , rouge|
|Ceramics||F||Glaze and saggers for ceramic pottery , for steatite porcelain|
|Agricultural chemicals and fertilizers||F||Carrier for agricultural chemicals , fertilizer coagulation prevention agent|
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