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Sulfur dioxide

Catalog No. Sulfur_dioxide Name Wikipedia.org
CAS Number 7446-09-5 Website http://www.wikipedia.org/
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SYNONYMS

IUPAC name
(oxo-λ4-sulfanylidene)oxidane
IUPAC Traditional name
(oxo-λ4-sulfanylidene)oxidane
Synonyms
Sulfurous anhydride
Sulfur(IV) oxide

DATABASE IDS

CAS Number 7446-09-5
Unique Ingredient Identifier 0UZA3422Q4
MeSH Name Sulfur+dioxide
Gmelin ID 1443
Chemspider ID 1087
CHEMBL 1235997
Wikipedia Title Sulfur_dioxide
CHEBI ID 18422
KEGG ID D05961
PubChem CID 1119
EC Number 231-195-2
Beilstein Number 3535237

PROPERTIES

pKa 1.81
Apperance Colorless gas
pKb 12.19
Boiling Point -10°C
Std enthalpy of formation -296.81 kJ mol-1
Density 2.6288 kg m-3
Melting Point -72.15°C (201K)
Std molar entropy 248.223 J K-1 mol-1
Solubility 94 g dm-3 in water
Vapor Pressure 237.2 kPa
Viscosity 0.403 cP (at 0 °C)
EU Index 016-011-00-9
European Hazard Symbols Toxic Toxic (T)
LD50 3000 ppm (30 min inhaled, mouse)
NFPA704
NFPA 704 diagram
0
3
0
Risk Statements R23, R34, R50
RTECS WS4550000
Safety Statements S1/2, S9, S26, S36/37/39, S45
UN Number 1079, 2037

DETAILS

Description (English)

REFERENCES