Architectural Coatings / Interior / Talc

Talc

Talc (silicate, chemical formula Mg3(OH)2/Si4O10) can be characterised by:

 

  • Lamellar nature: talc can be classified as either microcrystalline (length:thickness = 10:1) or macrocrystalline (length:thickness = 35:1)
  • Low Mohs hardness of 1 (being the softest mineral in the range)
  • Hydrophobic surface and resulting low water absorption
  • High brightness
  • High purity
  • High inertness in various media.

 

Basic properties

Property Value Unit
Moisture 0.2 [%]
pH 9 [-]
Hardness (Mohs) 1 [-]
Refractive index 1.57 [-]
Density 2.8 [kg/ dm3]

 

Product overview

Product Grade D50

[µm]

D97

[µm]

OA

[g/ 100 g]

L*
Tital VT 5 4.5 11 55 96
VT 10 7 17 52 96
VT 15 8 22 52 96
VT 20 10 28 48 96
VT 30 15.5 60 40 96
VT 50 16 72 32 96
VT Prime 10 28 38 93

Production location Tital

 

Application

Talc will provide:

 

  • Mud cracking resistance: due to its lamellar structure, talc will mechanically reinforce the binder matrix and hence lower the tendency for mud cracking to occur.
  • Wet scrub resistance: due to its low hardness of 1 on the Mohs scale and hydrophobic nature, talc will improve the wet-scrub resistance of interior decorative coatings.

 

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