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Substance Name: Cristobalite
RN: 14464-46-1
InChIKey: VYPSYNLAJGMNEJ-UHFFFAOYSA-N

Note

  • Transparent, tasteless crystals found in nature as agate, amethyst, chalcedony, cristobalite, flint, sand, QUARTZ, and tridymite. The compound is insoluble in water or acids except hydrofluoric acid.

Molecular Formula

  • O2-Si

Molecular Weight

  • 60.084
 

Classification Codes

Classification Codes

  • Human Data
  • Tumor Data

Superlist Classification Codes

  • Ceiling use 1/2 value calculated for quartz;
  • Known to be a Carcinogen
  • TWA 0.05 mg/m3 (respirable fraction)
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Names and Synonyms

Results Name

  • Cristobalite

Synonyms

  • 43-63C
  • alpha-Cristobalite
  • alpha-Crystobalite
  • Calcined diatomaceous earth
  • Calcined diatomite
  • Cristobalite
  • Crystoballite
  • Crysvarl
  • EINECS 238-455-4
  • Metacristobalite
  • Sibelite M 3000
  • Sibelite M 4000
  • Sibelite M 6000
  • W 006
  • WGL 300

Systematic Names

  • Cristobalite
  • Cristobalite (SiO2)
  • Silica, crystalline - cristobalite

Superlist Names

  • Cristobalite
  • Cristobalite asbestos
  • Cristobalite dust
  • Cristobalite [Silica, crystalline]
  • Silica, crystalline: cristobalite

Registry Numbers

CAS Registry Number

  • 14464-46-1

Other Registry Numbers

  • 105269-70-3
  • 1317-48-2

System Generated Number

  • 0014464461

Structure Descriptors

InChI

1S/O2Si/c1-3-2

InChIKey

VYPSYNLAJGMNEJ-UHFFFAOYSA-N

Smiles

[Si](=O)=O

Toxicity

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
human TCLo inhalation 16mppcf/8H/17 (16mppcf) LUNGS, THORAX, OR RESPIRATION: "FIBROSIS, FOCAL (PNEUMOCONIOSIS)"

LUNGS, THORAX, OR RESPIRATION: COUGH

LUNGS, THORAX, OR RESPIRATION: DYSPNEA
National Technical Information Service. Vol. PB246-697,
rat LDLo intratracheal 200mg/kg (200mg/kg) LUNGS, THORAX, OR RESPIRATION: "FIBROSIS, FOCAL (PNEUMOCONIOSIS)" British Journal of Industrial Medicine. Vol. 10, Pg. 9, 1953.