4,4'-Bipyridine
Also known as: 4,4'-bipyridyl, 4,4'-dipyridyl, gamma,gamma'-dipyridyl, 4-(4-pyridyl)pyridine, 4,4'-dipyridine
4,4'-Bipyridine (CAS 553-26-4) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C10H8N2 and a molecular weight of 156.184 g/mol. Key properties include a melting point of 109-112 °C(lit.), a boiling point of 304.8±0.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 104.3±12.0 °C. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed, H315 — Causes skin irritation and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 553-26-4
- Jingsj CID
- J-31887-6
- Molecular Formula
- C10H8N2
- Molecular Weight
- 156.184 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 109-112 °C(lit.) |
|---|---|
| Boiling Point | 304.8±0.0 °C at 760 mmHg |
| Density | 1.1±0.1 g/cm3 |
| Flash Point | 104.3±12.0 °C |
| Exact Mass | 156.068741 |
| PSA | 25.78000 |
| LogP | 1.20 |
| Vapor Pressure | 0.0±0.6 mmHg at 25°C |
| Refractive Index | 1.581 |
| Additional Property | slightly soluble |
GHS Safety & Compliance
- H301 — Toxic if swallowed
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2933399090 |
|---|---|
| Summary | 2933399090. other compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 4,4'-Bipyridine?
The CAS number of 4,4'-Bipyridine is 553-26-4.
What are the molecular formula and molecular weight of 4,4'-Bipyridine?
4,4'-Bipyridine has molecular formula C10H8N2 and molecular weight 156.184 g/mol.
Is 4,4'-Bipyridine hazardous?
4,4'-Bipyridine has GHS signal word Danger and hazard statements H301 — Toxic if swallowed; H315 — Causes skin irritation; H319 — Causes serious eye irritation.
What are the upstream and downstream products of 4,4'-Bipyridine?
For 4,4'-Bipyridine, Upstream Products: 4-Bromopyridine, Pyridine-4-boronic acid, 4,4'-Bipyridine 1,1'-dioxide; Downstream Products: 1,1'-Diphenyl-4,4'-bipyridinium dichloride, 1,1'-Dioctyl-4,4'-bipyridinium dibromide, 1,1'-Bis(2,4-dinitrophenyl)-4,4'-bipyridinium dichloride.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4,4'-Bipyridine (CAS 553-26-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-31887-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.