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Sulfur Trioxide

Sulfur Trioxide / CAS : 7446-11-9

Appearance Colorless transparent oily liquid with strong pungent odor. UN 1829
HS 29420000 DG Class 8
Synonyms Schwefeltrioxid; Sulfuric acid Anhydride; SO3; Sulphur Trioxide; Sulfan; Sulfur Oxide (SO3); Sulfuric Anhydride; Sulfuric Oxide; Sulfan(R); Sulfur(VI) Oxide; Oxosulfane Dioxide; Sulfur(Vi) Trioxide
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Properties

Summary

Formula
O3S
Molecular Mass
80.06320
Exact Mass
79.95680
PSA
83.30000
Logp
0.29180
IUPAC
sulfur trioxide
SMILES
O=S(=O)=O

Attribute classification

Matter Classification
inorganic
Category
Inorganic Chemicals > Oxides And Peroxides
Dyestuffs and Pigments > Intermediates

Chemical and Physical Properties

Melting Point
16.8 °C(lit.)
Density
1.97 g/mL at 25 °C(lit.)
Boiling Point
44.8 °C
Appearance
Colorless transparent oily liquid with strong pungent odor.

Export information

HS Code
29420000
Export Rebate
13%
UN No.
1829
DG-Class
8
Risk Code
45-8-14-26-34-37-35
Safety Label
O,T+,C

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