2-Octynoic acid
Also known as: oct-2-ynoic acid, 2-Octyn-1-oic acid, pentylpropiolic acid, m-Pentyl propiolate, Propiolic acid, pentyl ester, Oct-2-insaeure, oct-2-ynoid acid
2-Octynoic acid (CAS 5663-96-7) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C8H12O2 and a molecular weight of 140.18000 g/mol. Key properties include a melting point of 2-5 °C(lit.), a boiling point of 148-149 °C19 mm Hg(lit.), a density of 0.961 g/mL at 25 °C(lit.) and a flash point of 101.1 °C. No supplier offers are currently listed; request a quote. Record last updated Nov 2, 2026.
- CAS No.
- 5663-96-7
- Jingsj CID
- J-29375-4
- Molecular Formula
- C8H12O2
- Molecular Weight
- 140.18000 g/mol
- Category
- Organic Acids
- Last updated
- 11/2/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 2-5 °C(lit.) |
|---|---|
| Boiling Point | 148-149 °C19 mm Hg(lit.) |
| Density | 0.961 g/mL at 25 °C(lit.) |
| Flash Point | 101.1 °C |
| Exact Mass | 140.08400 |
| PSA | 37.30000 |
| LogP | 1.65470 |
| Refractive Index | n20/D 1.46(lit.) |
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 2-Octynoic acid?
The CAS number of 2-Octynoic acid is 5663-96-7.
What are the molecular formula and molecular weight of 2-Octynoic acid?
2-Octynoic acid has molecular formula C8H12O2 and molecular weight 140.18000 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. "2-Octynoic acid (CAS 5663-96-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-29375-4 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.