1-Acetylazepan-2-one
N-乙酰基己内酰胺
Also known as: N-Acetylcaprolactam, 1-Acetyl-2-azepanone, 1-Acetylhexahydro-2H-azepin-2-one, 1-Acetyl-hexahydro-2H-azepin-2-one, Acetylcaprolactam, N-Acetyl-ε-caprolactam, N-Acetyl-6-caprolactam, N-Acetyl-2-oxohexamethyleneimine, 1-acetyl-caprolactam, N-Acetylhexanelactam, 1-Acetyl-hexahydro-azepin-2-one, 2H-Azepin-2-one, 1-acetylhexahydro-, EINECS 217-565-6, MFCD00003262
1-Acetylazepan-2-one (CAS 1888-91-1) is a compound in the Organic Bases category listed in the Jingsj chemical database. It has the molecular formula C8H13NO2 and a molecular weight of 155.194 g/mol. It is also known as N-Acetylcaprolactam, 1-Acetyl-2-azepanone and 1-Acetylhexahydro-2H-azepin-2-one. Key properties include a boiling point of 242.1±0.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 122.2±11.1 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 1888-91-1
- Jingsj CID
- J-46133-7
- Molecular Formula
- C8H13NO2
- Chinese Name
- N-乙酰基己内酰胺
- Molecular Weight
- 155.194 g/mol
- Category
- Organic Bases
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 242.1±0.0 °C at 760 mmHg |
|---|---|
| Density | 1.1±0.1 g/cm3 |
| Flash Point | 122.2±11.1 °C |
| Exact Mass | 155.094635 |
| PSA | 37.38000 |
| LogP | 1.18 |
| Vapor Pressure | 0.0±0.4 mmHg at 25°C |
| Refractive Index | 1.479 |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H319 — Causes serious eye irritation
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 1-Acetylazepan-2-one?
The CAS number of 1-Acetylazepan-2-one is 1888-91-1.
What are the molecular formula and molecular weight of 1-Acetylazepan-2-one?
1-Acetylazepan-2-one has molecular formula C8H13NO2 and molecular weight 155.194 g/mol.
Is 1-Acetylazepan-2-one hazardous?
1-Acetylazepan-2-one has GHS signal word Warning and hazard statements H302 — Harmful if swallowed; H319 — Causes serious eye irritation.
What are the upstream and downstream products of 1-Acetylazepan-2-one?
For 1-Acetylazepan-2-one, Upstream Products: 7-Methoxy-3,4,5,6-tetrahydro-2H-azepine, Caprolactam, Acetyl chloride; Downstream Products: Caprolactam, ketene, 6-Acetamidohexanoic acid.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1-Acetylazepan-2-one (CAS 1888-91-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-46133-7 (accessed 2026-10-28).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.