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Substance Name: Fumes, silica
RN: 69012-64-2


  • TSCA Definition 2017: Amorphous silicon dioxide particles from the volatilization and vaporization of furnace feed materials in the manufacture of ferrosilicon and silicon.

Molecular Formula

  • Unspecified

Classification Codes

Classification Code


Superlist Classification Code

  • TWA 2 mg/m3 (respirable fraction)
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Links to Resources

Names and Synonyms


  • Amorphous silica fume
  • EC 273-761-1
  • EINECS 273-761-1

Systematic Names

  • Fumes, silica
  • Silica, amorphous-fume

Superlist Name

  • Silica fume

Registry Numbers

CAS Registry Number

  • 69012-64-2

System Generated Number

  • 0069012642