Category:
Other Fine Chemicals
CAS NO:
26412-87-3
Standard:
In-house Standards,
| Chemical Name: | Pyridine sulfur trioxide |
| Molecular Formula: | C5H5NO3S |
| Formula Weight: | 159.16 |
| CAS No.: | 26412-87-3 |
Pyridine sulfur-trioxide, also known as pyridine-SO3 complex, is a potent sulfonating agent widely used in organic synthesis. It is typically prepared by reacting pyridine with chlorosulfonic acid or sulfur trioxide gas. The compound features the molecular formula C5H5N·SO3 and carries CAS number 1460-27-3.
This substance acts as a strong dehydrating and corrosive agent. Strict storage in dry, sealed containers under inert atmosphere is required to prevent hydrolysis. Personnel must wear full PPE including acid-resistant gloves and face shields due to severe skin and respiratory irritation risks.