SO3
Sulfur trioxide
Sulphur trioxide
O
3
S
1
  
 
Real, long lived, electronically neutral reagent chemical.

Gram formula weight (molecular mass) = 80.063
Melting point = 17 °C
Boiling point = 45 °C
Density = 1.4 g/cm3
Purity = 99 %
Solubility in organics = slightly soluble


Pure sulfur trioxide is prone to polymerise. The material is stabilised by thionyl chloride or oxalyl chloride.
Wikipedia Page:

Sulfur trioxide
is defined with respect to the entities below:
The entities below are defined with respect to:
Sulfur trioxide
Electrophile (AS/A2 generic)


Electrophile (generic)


Hard Lewis acid (generic)


Lewis acid (AS/A2 generic)


Molecular material (generic)


Mono-bond type material (generic)


Nucleophilic attack susceptible species (generic)


Oxidised main group element oxidising agent (generic)


Period 3 Oxides (AS/A2 generic)


VSEPR geometry = AX3 (generic)


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