Substance Name: Sulfur dioxide [NF]
RN: 7446-09-5
InChIKey: RAHZWNYVWXNFOC-UHFFFAOYSA-N

Note

  • A highly toxic, colorless, nonflammable gas. It is used as a pharmaceutical aid and antioxidant. It is also an environmental air pollutant.

Molecular Formulas

  • O2-S
  • S-O2

Molecular Weight

  • 64.064
2D chemical structure of 7446-09-5
 

Classification Codes

Classification Codes

  • Agricultural Chemical
  • Air Pollutants
  • Environmental Pollutants
  • Fungicide, bactericide, wood preservative
  • Human Data
  • Insecticide
  • Mutation data
  • Pharmaceutic aid [antioxidant]
  • Reproductive Effect
  • Skin / Eye Irritant
  • Tumor data

Superlist Classification Codes

  • Overall Carcinogenic Evaluation: Group 3
  • Threshold Planning Quantity (TPQ) = 500 lb
  • TWA (2 ppm); STEL (5 ppm); Not classifiable as a human carcinogen
  • TWA 5 ppm (13 mg/m3)

Names and Synonyms

Name of Substance

  • Sulfur dioxide
  • Sulfur dioxide [NF]

MeSH Heading

  • Sulfur dioxide

Synonyms

  • Caswell No. 813
  • CCRIS 9001
  • EINECS 231-195-2
  • EPA Pesticide Chemical Code 077601
  • FEMA No. 3039
  • Fermenicide liquid
  • Fermenicide powder
  • HSDB 228
  • Schwefeldioxid
  • Schwefeldioxyd
  • Schwefeldioxyd [German]
  • Siarki dwutlenek
  • Siarki dwutlenek [Polish]
  • Sulfur dioxide
  • Sulfur dioxide (SO2)
  • Sulfur oxide (SO2)
  • Sulfur superoxide
  • Sulfurous acid anhydride
  • Sulfurous anhydride
  • Sulfurous oxide
  • Sulphur dioxide
  • UN 1079
  • UNII-0UZA3422Q4

Systematic Names

  • Sulfur dioxide
  • Sulphur dioxide

Superlist Names

  • Sulfur dioxide
  • Sulfur dioxide (SO2) 10% by volume or more SO2
  • Sulfur dioxide [UN1079] [Poison gas]
  • Surfur dioxide (anhydrous)
  • UN1079

Registry Numbers

CAS Registry Number

  • 7446-09-5

Other Registry Numbers

  • 12396-99-5
  • 1239882-82-6
  • 8014-94-6
  • 83008-56-4
  • 89125-89-3

System Generated Number

  • 0007446095

Structure Descriptors

InChI

1S/O2S/c1-3-2

InChIKey

RAHZWNYVWXNFOC-UHFFFAOYSA-N

Smiles

S(=O)=O

Toxicity

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
frog LCLo inhalation 1pph/15M (10000ppm)   "Abdernalden's Handbuch der Biologischen Arbeitsmethoden." Vol. 4, Pg. 1396, 1935.
guinea pig LCLo inhalation 1039ppm/24H (1039ppm)   Contributions from Boyce Thompson Institute. Vol. 10, Pg. 281, 1939.
human LCLo inhalation 1000ppm/10M (1000ppm) LUNGS, THORAX, OR RESPIRATION: RESPIRATORY DEPRESSION Clinical Toxicology. Vol. 5, Pg. 198, 1972.
human LCLo inhalation 3000ppm/5M (3000ppm)   Tabulae Biologicae. Vol. 3, Pg. 231, 1933.
human TCLo inhalation 3ppm/5D (3ppm) LUNGS, THORAX, OR RESPIRATION: OTHER CHANGES Toxicology and Applied Pharmacology. Vol. 22, Pg. 319, 1972.
human TCLo inhalation 12ppm/1H (12ppm) LUNGS, THORAX, OR RESPIRATION: OTHER CHANGES Sangyo Igaku. Japanese Journal of Industrial Health. Vol. 14, Pg. 449, 1972.
mammal (species unspecified) LCLo inhalation 3000ppm/5M (3000ppm)   Naunyn-Schmiedeberg's Archiv fuer Experimentelle Pathologie und Pharmakologie. Vol. 138, Pg. 65, 1928.
mouse LC50 inhalation 3000ppm/30M (3000ppm) BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD

BEHAVIORAL: CHANGES IN MOTOR ACTIVITY (SPECIFIC ASSAY)
Journal of Combustion Toxicology. Vol. 4, Pg. 236, 1977.
rat LC50 inhalation 2520ppm/1H (2520ppm)   National Technical Information Service. Vol. AD-A148-952,