Sulfur trioxide pyridine complex
三氧化硫-吡啶复合物
Also known as: Pyridine sulfur trioxide, Pyridine-SO3 complex, Sulfur trioxide - pyridine complex, Pyridine, compd. with sulfur trioxide (1:1), Sulfur trioxide pyridine, PyridineSO3, Sulfur(VI) oxide-pyridine complex, Sulphur trioxide-pyridine (1:1), SO3*pyridine complex, Sulfur trioxide pyridine complex, tech.
Sulfur trioxide pyridine complex (CAS 26412-87-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H5NO3S and a molecular weight of 159.16300 g/mol. It is also known as Pyridine sulfur trioxide, Pyridine-SO3 complex and Sulfur trioxide - pyridine complex. Key properties include a melting point of ~160 °C, a boiling point of 115.3ºC at 760 mmHg and a flash point of 20ºC. It is classified under GHS with signal word Danger and hazard statements H302 — Harmful if swallowed and H314 — Causes severe skin burns and eye damage. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 26412-87-3
- Jingsj CID
- J-42635-0
- Molecular Formula
- C5H5NO3S
- Chinese Name
- 三氧化硫-吡啶复合物
- Molecular Weight
- 159.16300 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | ~160 °C |
|---|---|
| Boiling Point | 115.3ºC at 760 mmHg |
| Flash Point | 20ºC |
| Exact Mass | 158.99900 |
| PSA | 96.19000 |
| LogP | 1.37340 |
| Vapor Pressure | 22.8mmHg at 25°C |
| Additional Property | reacts |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H314 — Causes severe skin burns and eye damage
Customs & Trade Information
| HS Code | 29420000 |
|---|
Frequently Asked Questions
What is the CAS number of Sulfur trioxide pyridine complex?
The CAS number of Sulfur trioxide pyridine complex is 26412-87-3.
What are the molecular formula and molecular weight of Sulfur trioxide pyridine complex?
Sulfur trioxide pyridine complex has molecular formula C5H5NO3S and molecular weight 159.16300 g/mol.
Is Sulfur trioxide pyridine complex hazardous?
Sulfur trioxide pyridine complex has GHS signal word Danger and hazard statements H302 — Harmful if swallowed; H314 — Causes severe skin burns and eye damage.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Sulfur trioxide pyridine complex (CAS 26412-87-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-42635-0 (accessed 2026-10-28).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.