Industrial Coatings / General Industrial, Marine and Protective Coatings / Quartz


Quartz (silica, SiO2) is the core mineral within the Sibelco group and can be found in a broad number of applications, such as glass, ceramics and coatings. Quartz can be characterised by:


  • Relatively high Mohs hardness of 7
  • Low electrical conductivity
  • Easy to wet
  • High inertness in various media
  • Shape (depending on the source, quartz particles can have an angular or more rounded shape).


Note when using quartz:

depending on the particle size distribution of the product, it can be labelled (STOT RE 2 or STOT RE 1). For more detailed information, visit


Basic properties

Property Value Unit
Moisture [%]
pH 7 [-]
Hardness (Mohs) 7 [-]
Refractive index 1.55 [-]
Colour (D65/ 10°) L* 93 – 96 [-]
L.O.I. < 0.3 [%]
Density 2.65 [kg/ dm3]


Product overview

Coarse Fine
product Grade D50 Name Grade D50 D90 OA
[µm] [µm] [µm] [g/ 100 g]
Silica sand M31 370 Silverbond M6 30 95 16.5
M32 260 M10 23 60 17.5
M34 170 M300 17 40 19
M400 12 26 20
M500 4 10 23
M600 4 9 24
M800 1.8 4.1 32

Production locations Silverbond, Silica Sand



Quartz will provide:


  • Excellent adhesive properties between primer and substrate.
  • Abrasion resistance: due to its hardness of 7 on Mohs scale, quartz will increase the coating’s resistance to wear.
  • Skid resistance: coarse quartz grades will give a roughness to the substrate, making it less slippery in general and in wet conditions.
  • UV resistance: being insensitive to UV radiation, quartz will reduce the coating’s degradation.
  • Chemical resistance: due to its inert nature, quartz will provide good chemical resistance compared to conventional fillers.


Warning: Use of undefined constant php - assumed 'php' (this will throw an Error in a future version of PHP) in /home/sibelcot/sites/coatings/wp-content/themes/sibelco/template-parts/functionalitiesSubMineral.php on line 66

Sibelco © 2020