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Substance Name: Kieselguhr, calcined
RN: 91053-39-3


  • TSCA Definition 2018: Kieselguhr heated in a rotary furnace to ( at which temperature the water evaporates and the iron becomes oxidized. Consists mostly of oxides of aluminum, iron and silicon.

Molecular Formula

  • Unspecified

Classification Code

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Names and Synonyms


  • Diatomaceous silica, calcined
  • EINECS 293-303-4

Systematic Name

  • Kieselguhr, calcined

Registry Numbers

CAS Registry Number

  • 91053-39-3

Other Registry Number

  • 145379-50-6

System Generated Number

  • 0091053393