4-Pentynoic acid
Also known as: pent-4-ynoic acid, Propargylacetic acid, 2-Propargylethanoic acid, TIMTEC-BB SBB009121
4-Pentynoic acid (CAS 6089-09-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C5H6O2 and a molecular weight of 98.100 g/mol. Key properties include a melting point of 54-57 °C(lit.), a boiling point of 199.2±0.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 90.8±17.3 °C. It is classified under GHS with signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 6089-09-4
- Jingsj CID
- J-35428-9
- Molecular Formula
- C5H6O2
- Molecular Weight
- 98.100 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 54-57 °C(lit.) |
|---|---|
| Boiling Point | 199.2±0.0 °C at 760 mmHg |
| Density | 1.1±0.1 g/cm3 |
| Flash Point | 90.8±17.3 °C |
| Exact Mass | 98.036781 |
| PSA | 37.30000 |
| LogP | 0.43 |
| Vapor Pressure | 0.1±0.8 mmHg at 25°C |
| Refractive Index | 1.462 |
GHS Safety & Compliance
- H314 — Causes severe skin burns and eye damage
Activity & Biological Data
| Additional Information | [1]. Elgafi, et al. Cyclization of acetylenic carboxylic acids and acetylenic alcohols to oxygen-containing heterocycles using cationic rhodium(I) complexes. Journal of Organometallic Chemistry.Volume: 607.Issue: 1-2.Pages: 97-104.Journal 2000. |
|---|
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 4-Pentynoic acid?
The CAS number of 4-Pentynoic acid is 6089-09-4.
What are the molecular formula and molecular weight of 4-Pentynoic acid?
4-Pentynoic acid has molecular formula C5H6O2 and molecular weight 98.100 g/mol.
Is 4-Pentynoic acid hazardous?
4-Pentynoic acid has GHS signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4-Pentynoic acid (CAS 6089-09-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-35428-9 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.