Sulfur dioxide

O₂SCAS 7446-09-564.06 g/mol

Open in Covalent MOL file

Properties

Molecular formula: O₂S
Molar mass: 64.06 g/mol
Exact mass: 63.9619 Da
Density: 2.811–3 g/mL
Melting point: −75.5 °C
Boiling point: −10.05 °C
Water solubility: 100 g/L
logP: -0.67Crippen estimate
Polar surface area: 34.1 Å²
H-bond donors / acceptors: 0 / 2
Rotatable bonds: 0

Hazards

Danger

H314 Causes severe skin burns and eye damageSkin corrosion/irritation
H331 Toxic if inhaledAcute toxicity, inhalation
H370 Causes damage to organsSpecific target organ toxicity, single exposure

Harmonised EU classification (CLP Annex VI, index 016-011-00-9), via PubChem.

Precautionary statements

P260, P261, P264, P270, P271, P280, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P308+P316, P316, P321, P363, P403+P233, P405, P501

Identifiers

CAS number

7446-09-5

SMILES

O=S=O

InChIKey

RAHZWNYVWXNFOC-UHFFFAOYSA-N

InChI

InChI=1S/O2S/c1-3-2

Weigh it out

Type any one amount. The others follow from the molar mass and density.

Names and synonyms

10 names

Sulfur superoxide
Sulfurous acid anhydride
Sulfurous anhydride
Sulfurous oxide
Sulfur oxide (SO2)
Fermenticide liquid
Sulfur dioxide (SO2)
Sulfur oxide
Sulphur dioxide
E 220

Reactions

DABCO-bis(sulfur dioxide), DABSO, as an easy-to-handle source of SO2: Sulfonamide preparationproduct

Work with Sulfur dioxide

Predict the NMR spectrum1H and 13C shifts with multiplicities Make a solutionWhat to weigh for any molarity and volume Check drug-likenessLipinski, Veber and lead-likeness Boiling point under vacuumAt any pressure, from its normal boiling point Isotope patternExact mass and the mass spectrum pattern

Elsewhere

PubChem CAS Common Chemistry NIST WebBook Wikipedia