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Silica Powder, Ground Silica, 10 Micron

Fine abrasive powder for industrial use.
SKU: MUS40
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Silica Powder, Ground Silica, 10 Micron (MUS40)


MUS40 is a premium-grade, natural crystalline silica powder with a high purity level of at least 99.2% SiO₂. This ground silica features a controlled particle size distribution, ensuring minimal coarse and fine particles, which enhances its performance across various applications. Its white, bright, and inert properties, combined with low moisture content and a low-cost profile, make it an ideal filler/extender for paints, coatings, sealants, silicone rubber, and epoxy formulations. With a median particle size of 10.5 microns, a specific gravity of 2.65, and a Mohs hardness of 7.0, MUS40 is both highly durable and versatile. It boasts excellent reflectance at 90% and passes 99.2% through a 325-mesh sieve, ensuring superior quality for industrial use.


Key Features

  • High-purity crystalline silica (>99.2% SiO₂)
  • Controlled particle size distribution (10.5-micron median)
  • Excellent filler/extender for paints, coatings, and sealants
  • Inert, white, and bright with 90% reflectance
  • Durable with a Mohs hardness of 7.0
  • Passes 99.2% through a 325-mesh sieve

Product Specifications

Chemical Name Silica (Crystalline)
CAS Number 14808-60-7
Purity 99.2% SiO₂ (minimum)
Median Particle Size 10.5 microns
Applications Paints, coatings, sealants, silicone rubber, epoxy
Specific Gravity 2.65
Mohs Hardness 7.0


Perfect for paints, sealants, and industrial formulations.
  • Availability: In Stock
  • Model: MUS40
  • Brand: ChemicalStore