2-Pyrrolidinone
Also known as: 2-Pyrrolidone, Butyrolactam, 2-Oxopyrrolidine, 2-Ketopyrrolidine, 2-Pyrol, α-Pyrrolidone, γ-Butyrolactam, 1-azacyclopentan-2-one, 2-AZACYCLOPENTANONE, PIPERIDINIC ACID LACTAM, Piracetam Impurity 1, Pyrrolidin-2-on, Tetrahydropyrrolone, azacyclopentan-2-one, pyrrolidin-2-one, pyrrolidinone, pyrrolidone, EINECS 210-483-1, MFCD00005270
2-Pyrrolidinone (CAS 616-45-5) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C4H7NO and a molecular weight of 85.104 g/mol. Key properties include a melting point of 25.5 ºC, a boiling point of 250 ºC, a density of 1.103 and a flash point of 138 ºC. It is classified under GHS with signal word Warning and hazard statements H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 616-45-5
- Jingsj CID
- J-1013949-7
- Molecular Formula
- C4H7NO
- Molecular Weight
- 85.104 g/mol
- Category
- Ketones
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 25.5 ºC |
|---|---|
| Boiling Point | 250 ºC |
| Density | 1.103 |
| Flash Point | 138 ºC |
| Exact Mass | 85.052765 |
| PSA | 29.10000 |
| LogP | -1.01 |
| Additional Property | 2.9 (vs air) |
| Vapor Pressure | 0.1±0.8 mmHg at 25°C |
| Refractive Index | 1.486-1.488 |
| Additional Property | miscible |
GHS Safety & Compliance
- H319 — Causes serious eye irritation
Activity & Biological Data
| Target | Human Endogenous Metabolite |
|---|---|
| Additional Information | [1]. Thangam R, et al. Antioxidant and in vitro anticancer effect of 2-pyrrolidinone rich fraction of Brassica oleracea var. capitata through induction of apoptosis in human cancer cells. Phytother Res. 2013 Nov;27(11):1664-70. |
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-Pyrrolidinone?
The CAS number of 2-Pyrrolidinone is 616-45-5.
What are the molecular formula and molecular weight of 2-Pyrrolidinone?
2-Pyrrolidinone has molecular formula C4H7NO and molecular weight 85.104 g/mol.
Is 2-Pyrrolidinone hazardous?
2-Pyrrolidinone has GHS signal word Warning and hazard statements H319 — Causes serious eye irritation.
What are the upstream and downstream products of 2-Pyrrolidinone?
For 2-Pyrrolidinone, Upstream Products: Maleimide, Diammonium succinate, Succinimide; Downstream Products: 4-[(2,4-Dinitrophenyl)amino]butanoic acid, 1-(chloromethyl)pyrrolidin-2-one, 1-Isopropyl-2-pyrrolidinone.
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-Pyrrolidinone (CAS 616-45-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1013949-7 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.