Benzoxazole
Also known as: 1,3-Benzoxazole, Benzo[d]oxazole, 1-Oxa-3-aza-1H-indene, 1-Oxa-3-azaindene, USAF EK-5017, NSC 3982
Benzoxazole (CAS 273-53-0) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C7H5NO and a molecular weight of 119.121 g/mol. Key properties include a melting point of 27-30 °C(lit.), a boiling point of 182.5±9.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 65.3±14.6 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful 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.
- 273-53-0
- Jingsj CID
- J-33644-0
- Molecular Formula
- C7H5NO
- Molecular Weight
- 119.121 g/mol
- Category
- Aromatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 27-30 °C(lit.) |
|---|---|
| Boiling Point | 182.5±9.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 65.3±14.6 °C |
| Exact Mass | 119.037117 |
| PSA | 26.03000 |
| LogP | 1.59 |
| Vapor Pressure | 1.1±0.3 mmHg at 25°C |
| Refractive Index | 1.609 |
| Additional Property | Insoluble |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2934999090 |
|---|---|
| Summary | 2934999090. other heterocyclic compounds. 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 Benzoxazole?
The CAS number of Benzoxazole is 273-53-0.
What are the molecular formula and molecular weight of Benzoxazole?
Benzoxazole has molecular formula C7H5NO and molecular weight 119.121 g/mol.
Is Benzoxazole hazardous?
Benzoxazole has GHS signal word Warning and hazard statements H302 — Harmful if swallowed; H315 — Causes skin irritation; H319 — Causes serious eye irritation.
What are the upstream and downstream products of Benzoxazole?
For Benzoxazole, Upstream Products: 2-Aminophenol, 1,1,2-Triethoxyethane, Salicylaldehyde; Downstream Products: N-cyclohexyl-1,3-benzoxazol-2-amine, 2-Benzoxazolinone, 6-Hydroxy-2-benzoxazolinone.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Benzoxazole (CAS 273-53-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-33644-0 (accessed 2026-11-07).
Data for reference only; verify product details with suppliers before purchase.