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Substance Name: Sulfur trioxide
RN: 7446-11-9
UNII: HH2O7V4LYD
InChIKey: AKEJUJNQAAGONA-UHFFFAOYSA-N

Molecular Formula

  • O3-S

Molecular Weight

  • 80.063
 

Classification Codes

Classification Codes

  • Human Data
  • Tumor Data

Superlist Classification Codes

  • Overall Carcinogenic Evaluation: Group 1
  • Threshold Planning Quantity (TPQ) = 100 lb

Names and Synonyms

Name of Substance

  • Sulfur trioxide

Synonyms

  • EC 231-197-3
  • EINECS 231-197-3
  • HSDB 6338
  • Sulfan
  • Sulfur oxide
  • Sulfur trioxide
  • Sulfur trioxide, stabilized
  • Sulfuric anhydride
  • Sulfuric oxide
  • Sulphur trioxide
  • UNII-HH2O7V4LYD

Systematic Names

  • Sulfur trioxide
  • Sulphur trioxide

Superlist Names

  • NA1829
  • Sulfur trioxide
  • Sulfur trioxide, inhibited or Sulfur trioxide, stabilized
  • Sulfur trioxide, inhibited or Sulfur trioxide, stabilized [UN1829] [Corrosive]
  • Sulfur trioxide, uninhibited
  • Sulfur trioxide, uninhibited [NA1829] [Corrosive]
  • UN1829

Registry Numbers

CAS Registry Number

  • 7446-11-9

FDA UNII

  • HH2O7V4LYD

Other Registry Number

  • 856577-62-3

System Generated Number

  • 0007446119

Structure Descriptors

InChI

1S/O3S/c1-4(2)3

InChIKey

AKEJUJNQAAGONA-UHFFFAOYSA-N

Smiles

[S+](=O)(=O)[O-]

Toxicity

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
guinea pig LCLo inhalation 30mg/m3/6H (30mg/m3) LUNGS, THORAX, OR RESPIRATION: STRUCTURAL OR FUNCTIONAL CHANGE IN TRACHEA OR BRONCHI

LIVER: "HEPATITIS (HEPATOCELLULAR NECROSIS), DIFFUSE"

ENDOCRINE: OTHER CHANGES
Journal of Pathology and Bacteriology. Vol. 68, Pg. 197, 1954.
human TCLo inhalation 30mg/m3 (30mg/m3) LUNGS, THORAX, OR RESPIRATION: COUGH

SENSE ORGANS AND SPECIAL SENSES: OTHER CHANGES: OLFACTION

LUNGS, THORAX, OR RESPIRATION: OTHER CHANGES
Journal of Pathology and Bacteriology. Vol. 68, Pg. 197, 1954.