Sulfur Trioxide

SO₃

IUPAC: Sulfur trioxide

CAS: 7446-11-9

Aperçu

Sulfur trioxide is a key intermediate in sulfuric acid production via the contact process. It reacts vigorously with water.

Composition

Élément Symbole Atomes Masse atomique
Oxygen O 3 15,9990
Sulfur S 1 32,0600

Composition élémentaire

O
Oxygen ×3
60,0%
S
Sulfur ×1
40,0%

Usages

  • • Sulfuric acid production
  • • Sulfonation agent

Le saviez-vous

  • ✦ SO₃ exists in three solid forms: α, β, and γ polymorphs

Sécurité

  • ⚠ Corrosive
  • ⚠ Reacts violently with water
  • ⚠ Toxic

Structure

SMILES

O=S(=O)=O

Propriétés

Type
oxide
État
liquid
Masse molaire
80,06 g/mol
Densité
1,9200 g/cm³
Point de fusion
16,9 °C
Point d'ébullition
45,0 °C
Solubilité
Reacts violently

Molecular Descriptors

Exact Mass
79,9568
XLogP
-0,5
TPSA
52,2 Ų
H-Bond Donors
0
H-Bond Acceptors
3
Rotatable Bonds
0
Heavy Atoms
4
Complexity
61,0

Composés associés

Bismuth(III) Oxide

Bi₂O₃

Carbon Monoxide

CO

Chromium Trioxide

CrO₃

Cobalt(II) Oxide

CoO

Copper(I) Oxide

Cu₂O

Lithium Nickel Manganese Cobalt Oxide

LiNi₀.₃₃Mn₀.₃₃Co₀.₃₃O₂

Gallium(III) Oxide

Ga₂O₃

Aluminum Oxide

Al₂O₃

Antimony Trioxide

Sb₂O₃

Cadmium Oxide

CdO

Frequently Asked Questions

What is Sulfur Trioxide?
Sulfur Trioxide (SO₃) is a oxide compound with the IUPAC name Sulfur trioxide.
What is the molecular weight of Sulfur Trioxide?
Sulfur Trioxide has a molar mass of 80.06 g/mol.
What state is Sulfur Trioxide at room temperature?
Sulfur Trioxide is a liquid at room temperature.
Is Sulfur Trioxide organic or inorganic?
Sulfur Trioxide is classified as an inorganic compound.
What elements make up Sulfur Trioxide?
Sulfur Trioxide (SO₃) is composed of Oxygen (O), Sulfur (S).