Sulfur dioxide

August 10th, 2008 by

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Sulfur dioxide

Other names
sulfur(IV) oxide; sulfurous anhydride
Identifiers
CAS number
RTECS number
WS4550000
Properties
Molecular formula
SO2
Molar mass
64.054 g mol−1
Appearance
colourless gas
Density
2.551 g/L, gas
Melting point
−72.4 °C (200.75 K)
Boiling point
−10 °C (263 K)
Solubility in water
9.4 g/100 mL (25 °C)
Acidity (pKa)
1.81
Structure
Molecular shape
Bent 120°
Dipole moment
1.63 D
Hazards
EU classification
Toxic
NFPA 704

 
3
 
 
R-phrases
R23 R34
S-phrases
(S1/2) S9 S26 S36/37/39 S45
Flash point
non-flammable
Related compounds
Related [...]

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