2-Azetidinone
Also known as: Azetidin-2-one, beta-Propiolactam, 2-Azacyclobutanone, Azetan-2-one, Propiolactam, 2-Azetidone
2-Azetidinone (CAS 930-21-2) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C3H5NO and a molecular weight of 71.078 g/mol. Key properties include a melting point of 74-76 °C(lit.), a boiling point of 222.4±0.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 151.5±3.4 °C. It is classified under GHS with signal word Danger and hazard statements 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.
- 930-21-2
- Jingsj CID
- J-1387115-3
- Molecular Formula
- C3H5NO
- Molecular Weight
- 71.078 g/mol
- Category
- Ketones
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 74-76 °C(lit.) |
|---|---|
| Boiling Point | 222.4±0.0 °C at 760 mmHg |
| Density | 1.1±0.1 g/cm3 |
| Flash Point | 151.5±3.4 °C |
| Exact Mass | 71.037117 |
| PSA | 29.10000 |
| LogP | -2.02 |
| Vapor Pressure | 0.1±0.4 mmHg at 25°C |
| Refractive Index | 1.458 |
GHS Safety & Compliance
- H314 — Causes severe skin burns and eye damage
Customs & Trade Information
| HS Code | 2933790090 |
|---|---|
| Summary | 2933790090. other lactams. VAT:17.0%. Tax rebate rate:9.0%. . MFN tariff:9.0%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 2-Azetidinone?
The CAS number of 2-Azetidinone is 930-21-2.
What are the molecular formula and molecular weight of 2-Azetidinone?
2-Azetidinone has molecular formula C3H5NO and molecular weight 71.078 g/mol.
Is 2-Azetidinone hazardous?
2-Azetidinone has GHS signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage.
What are the upstream and downstream products of 2-Azetidinone?
For 2-Azetidinone, Upstream Products: beta-Alanine, 4-Acetoxy-2-azetidinone, Methyl 3-aminopropanoate; Downstream Products: 3-Nitropropanoic acid, 6-nitro-2H-1,4-benzoxazin-3(4H)-one, 4-Acetoxy-2-azetidinone.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2-Azetidinone (CAS 930-21-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1387115-3 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.