Azulene
Also known as: AZULEN, AZULENE, Azunamic, Azunol, BICYCLO(5.3.0)-DECA-1,3,5,7,9-PENTAENE, BICYCLO[5.3.0]DECAPENTAENE, Bicyclo(5.3.0)-1,3,5,7,9-decapentaene, Bicyclo(5.3.0)-deca-2,4,6,8,10-pentaene, Bicyclo[0.3.5]deca-1,3,5,7,9-pentaene, Bicyclo[5.3.0]deca-2,4,6,8,10-pentaene, Bicyclo[5.3.0]decapentaene, CYCLOPENTACYCLOHEPTEN, CYCLOPENTACYCLOHEPTENE, Cyclopentacycloheptene, EINECS 205-993-6, LABOTEST-BB LT00007822, MFCD00003810, azulene
Azulene (CAS 275-51-4) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C10H8 and a molecular weight of 128.171 g/mol. Key properties include a melting point of 98-100 °C(lit.), a boiling point of 220.7±7.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 76.7±8.9 °C. GHS hazard statements: H411 — Toxic to aquatic life with long lasting effects. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 275-51-4
- Jingsj CID
- J-27428-3
- Molecular Formula
- C10H8
- Molecular Weight
- 128.171 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 98-100 °C(lit.) |
|---|---|
| Boiling Point | 220.7±7.0 °C at 760 mmHg |
| Density | 1.0±0.1 g/cm3 |
| Flash Point | 76.7±8.9 °C |
| Exact Mass | 128.062607 |
| LogP | 3.45 |
| Vapor Pressure | 0.2±0.2 mmHg at 25°C |
| Refractive Index | 1.632 |
GHS Safety & Compliance
- H411 — Toxic to aquatic life with long lasting effects
Activity & Biological Data
| Target | HIV |
|---|---|
| Additional Information | [1]. Teppo O Leino, et al. Azulene-based Compounds for Targeting Orexin Receptors. Eur J Med Chem. 2018 Sep 5;157:88-100. [2]. Julia Peet, et al. Antiretroviral (HIV-1) Activity of Azulene Derivatives. Bioorg Med Chem. 2016 Apr 15;24(8):1653-7. [3]. David A. Becker, et al. A new synthesis of substituted azulenes. Journal of the American Chemical Society, 111(1), 389-391. |
Customs & Trade Information
| HS Code | 2902909090 |
|---|---|
| Summary | 2902909090 other aromatic hydrocarbons。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:2.0%。General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of Azulene?
The CAS number of Azulene is 275-51-4.
What are the molecular formula and molecular weight of Azulene?
Azulene has molecular formula C10H8 and molecular weight 128.171 g/mol.
Is Azulene hazardous?
Azulene has GHS hazard statements H411 — Toxic to aquatic life with long lasting effects.
What are the upstream and downstream products of Azulene?
For Azulene, Upstream Products: 3,4-Dihydro-1(2H)-azulenone, Cycloheptatriene; Downstream Products: N,N-Dimethylaniline, Azulene, Diacetylene.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Azulene (CAS 275-51-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-27428-3 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.