1-Methyl-3-pyrrolidinone
Also known as: 1-methyl-3-pyrrolidinone, 1-methylpyrrolidin-3-one, 1-methyl-3-pyrrolidone, 3-pyrrolidinone, 1-methyl-, N-methyl-3-pyrrolidinone
1-Methyl-3-pyrrolidinone (CAS 68165-06-0) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C5H9NO and a molecular weight of 99.131 g/mol. Key properties include a melting point of 320ºC, a boiling point of 148.8±23.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 39.9±12.2 °C. It is classified under GHS with signal word Danger and hazard statements H226 — Flammable liquid and vapour, H315 — Causes skin irritation and H317 — May cause an allergic skin reaction. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 68165-06-0
- Jingsj CID
- J-1093384-3
- Molecular Formula
- C5H9NO
- Molecular Weight
- 99.131 g/mol
- Category
- Ketones
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 320ºC |
|---|---|
| Boiling Point | 148.8±23.0 °C at 760 mmHg |
| Density | 1.0±0.1 g/cm3 |
| Flash Point | 39.9±12.2 °C |
| Exact Mass | 99.068413 |
| PSA | 20.31000 |
| LogP | -0.71 |
| Vapor Pressure | 4.1±0.3 mmHg at 25°C |
| Refractive Index | 1.470 |
GHS Safety & Compliance
- H226 — Flammable liquid and vapour
- H315 — Causes skin irritation
- H317 — May cause an allergic skin reaction
- H318 — Causes serious eye damage
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2933990090 |
|---|---|
| Summary | 2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. 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 1-Methyl-3-pyrrolidinone?
The CAS number of 1-Methyl-3-pyrrolidinone is 68165-06-0.
What are the molecular formula and molecular weight of 1-Methyl-3-pyrrolidinone?
1-Methyl-3-pyrrolidinone has molecular formula C5H9NO and molecular weight 99.131 g/mol.
Is 1-Methyl-3-pyrrolidinone hazardous?
1-Methyl-3-pyrrolidinone has GHS signal word Danger and hazard statements H226 — Flammable liquid and vapour; H315 — Causes skin irritation; H317 — May cause an allergic skin reaction.
What are the upstream and downstream products of 1-Methyl-3-pyrrolidinone?
For 1-Methyl-3-pyrrolidinone, Upstream Products: 1-Methyl-3-pyrrolidinol, 1-Methylpyrrolidine, 1-Ethyl-3-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. "1-Methyl-3-pyrrolidinone (CAS 68165-06-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1093384-3 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.