| Formula / Notation | O3S |
|---|---|
| CAS Number | 7446-11-9 |
| Molecular Weight | 80.07 |
| Melting Point | 144 °F Alpha form; 90.5 °F Beta form; 62.2 °F Gamma form (EPA, 1998) |
| Boiling Point | 113 °F at 760 mmHg all forms (EPA, 1998) |
| Density | 1.92 at 68 °F Gamma form (liquid) (EPA, 1998) - Denser than water; will sink |
| Solubility | Slowly very sol in aqueous, and sol in 100 parts water at room temp |
| Appearance | Sulfur trioxide, is a colorless to white crystalline solid which will fume in air. Often shipped with inhibitor to prevent polymerization. It reacts violently with water to form sulfuric acid with ... |
| Also Known As | 7446-11-9; Sulphur trioxide; Sulfur oxide (SO3); HH2O7V4LYD; DTXSID1029673; CHEBI:29384; Sulfan; Sulfuric oxide; RefChem:6276; Sulfur trioxide, stabilized |
| Category | Inorganic Compounds |
What is Sulfur trioxide?
Sulfur trioxide (O3S) is an inorganic compound that appears as Sulfur trioxide, is a colorless to white crystalline solid which will fume in air. Often shipped with inhibitor to prevent polymerization. It reacts violently with water to form sulfuric acid with .... It has a molecular weight of 80.07 g/mol. Boiling point: 113 °F at 760 mmHg all forms (EPA, 1998). Melting point: 144 °F Alpha form; 90.5 °F Beta form; 62.2 °F Gamma form (EPA, 1998).
Formula & Notation
IUPAC Name: sulfur trioxide
Other Names / Synonyms: 7446-11-9; Sulphur trioxide; Sulfur oxide (SO3); HH2O7V4LYD; DTXSID1029673; CHEBI:29384; Sulfan; Sulfuric oxide; RefChem:6276; Sulfur trioxide, stabilized
Properties & Characteristics
Physical Data
| Property | Value |
|---|---|
| Melting Point | 144 °F Alpha form; 90.5 °F Beta form; 62.2 °F Gamma form (EPA, 1998) |
| Boiling Point | 113 °F at 760 mmHg all forms (EPA, 1998) |
| Density | 1.92 at 68 °F Gamma form (liquid) (EPA, 1998) - Denser than water; will sink |
| Molecular Weight | 80.07 |
| Solubility | Slowly very sol in aqueous, and sol in 100 parts water at room temp |
| Appearance | Sulfur trioxide, is a colorless to white crystalline solid which will fume in air. Often shipped with inhibitor to prevent polymerization. It reacts violently with water to form sulfuric acid with ... |
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
Sulfur trioxide (O3S) is an inorganic compound that appears as Sulfur trioxide, is a colorless to white crystalline solid which will fume in air. Often shipped with inhibitor to prevent polymerization. It reacts violently with water to form sulfuric acid with .... It has a molecular weight of 80.07 g/mol. Boiling point: 113 °F at 760 mmHg all forms (EPA, 1998). Melting point: 144 °F Alpha form; 90.5 °F Beta form; 62.2 °F Gamma form (EPA, 1998).
Used in industrial processes, materials science, semiconductor manufacture, ceramics, or as a catalyst.
May be corrosive, toxic, or an oxidising agent. Handle in well-ventilated area. Consult SDS before use.
The formula or notation for Sulfur trioxide is: O3S