Talc is an important industrial mineral. It is an important filler material for paints, rubber, insecticides, cosmetics, plastics, paper, ceramic and pharma. It is Very fine white to grayish white odorless tasteless powder, insoluble in water but slightly soluble in dilute acids and its technical specification are as under:
01.
Loss on Ignition
5%
02.
Loss on Drying
0.05%
03.
MgO
29.5
04.
SiO2
61.5
05.
Fe2O3
2.56
06.
CaO
0.56
07.
Soluble Salts
0.2%
08.
Al2O3
0.55%
09.
Acid Soluble Substance
2.5%
10.
pH (at 10%)
8.5 -9.5
11.
Arsenic
Nil
12.
Asbestos fibres
Nil
13.
Mesh
200 to 700
14.
Brightness
78% to 98%
Uses of Talc Powder
Talc is used in making paper, ceramics, cosmetics, paints, detergents, foam / rubber, putties. It is also used in making of precious products like Talcum powder, pharmaceuticals & plastics.
