Company KOLTEX COLOR, s.r.o,  Czech distributor of talcs



10 different types constantly on our stock

many other types upon your request



we may find suitable type for your application 


Talc as the definig mineral for the value of 1 of Mohs hardness it can be easily scratched by a fingernail. It has a specific gravity of 2,5 - 2,8, a clear or   dusty lustre, is translucent to opaque. Its colour ranges from white to grey (or green, pink, blue, violet).

Talcum powder is valued for its extreme softness, smoothness, high lubricating and hiding power and ability to absorb oil and grease. It is chemically inert         to acids and alkalies. It has been found to be an excellent filler. It can withstand temperatures upto 1300ºC. It has low electrical and thermal conductivity.

 It can be easily powdered, cut and sawn into any shape and size. These properties in talc are of extreme value for various industrial applications as filler in rubber, textile, plastic, linoleum, asbestos products, polishes and soaps; as a loading agent for paper of all kinds; as a carrier of insecticidal and pesticidal dusts. Most of the rubber manufacturers use talc powder as a lubricant to prevent rubber goods from sticking. 
ystal structure
Crystal structure





   There are many types of talcs. The name "talc" does not describes the diversity of this mineral in nature. On one hand the talc is a pure magnesium silicate and on the other hand it is a common name for rocks containing more minerals. Pure talc has the following chemical formula:  Mg3[Si4O10(OH)2]. Theoretical chemical analysis has the following values:
SiO2 63,5%
MgO 31,7%
H2O 4,8%
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KOLTEX COLOR, s.r.o.      2010