9-Undecynoic acid
Also known as: 9-Hendecynoic acid, 9-UNDECYNOIC ACID, 9-Undecinsure, 9-Undecinsäure, Undec-9-ynoic acid, undec-9-ynoic acid, QV8UU2
9-Undecynoic acid (CAS 22202-65-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C11H18O2 and a molecular weight of 182.259 g/mol. Key properties include a melting point of 56-60ºC, a boiling point of 299.6±23.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 143.7±17.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 22202-65-9
- Jingsj CID
- J-1398402-6
- Molecular Formula
- C11H18O2
- Molecular Weight
- 182.259 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 56-60ºC |
|---|---|
| Boiling Point | 299.6±23.0 °C at 760 mmHg |
| Density | 1.0±0.1 g/cm3 |
| Flash Point | 143.7±17.3 °C |
| Exact Mass | 182.130676 |
| PSA | 37.30000 |
| LogP | 3.08 |
| Vapor Pressure | 0.0±1.3 mmHg at 25°C |
| Refractive Index | 1.471 |
Customs & Trade Information
| HS Code | 2916190090 |
|---|---|
| Summary | 2916190090 unsaturated acyclic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives。supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward)。VAT:17.0%。tax rebate rate:9.0%。MFN tariff:6.5%。general tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 9-Undecynoic acid?
The CAS number of 9-Undecynoic acid is 22202-65-9.
What are the molecular formula and molecular weight of 9-Undecynoic acid?
9-Undecynoic acid has molecular formula C11H18O2 and molecular weight 182.259 g/mol.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "9-Undecynoic acid (CAS 22202-65-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1398402-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.