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4-Ethyloctanoic acid

Also known as: 4-Ethylcaprylic acid, 4-Ethyloctanoic acid, Octanoic acid, 4-ethyl-, FEMA 3800, MFCD00506494

4-Ethyloctanoic acid (CAS 16493-80-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C10H20O2 and a molecular weight of 172.265 g/mol. Key properties include a boiling point of 271.6±8.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 142.3±6.9 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
16493-80-4
Jingsj CID
J-30810-1
Molecular Formula
C10H20O2
Molecular Weight
172.265 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point271.6±8.0 °C at 760 mmHg
Density0.9±0.1 g/cm3
Flash Point142.3±6.9 °C
Exact Mass172.146332
PSA37.30000
LogP3.78
Vapor Pressure0.0±1.2 mmHg at 25°C
Refractive Index1.442

GHS Safety & Compliance

IrritantSignal word: Warning
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H335 — May cause respiratory irritation

Activity & Biological Data

Additional Information[1]. Liu YP, et al. Rapid synthesis of flavor compound 4-ethyloctanoic acid under microwave irradiation. Int J Mol Sci. 2010 Oct 25;11(10):4165-74.

Customs & Trade Information

HS Code2915900090
Summary2915900090 other saturated acyclic monocarboxylic acids and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives VAT:17.0% Tax rebate rate:9.0% Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward) MFN tariff:5.5% General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 4-Ethyloctanoic acid?

The CAS number of 4-Ethyloctanoic acid is 16493-80-4.

What are the molecular formula and molecular weight of 4-Ethyloctanoic acid?

4-Ethyloctanoic acid has molecular formula C10H20O2 and molecular weight 172.265 g/mol.

Is 4-Ethyloctanoic acid hazardous?

4-Ethyloctanoic acid has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.

What are the upstream and downstream products of 4-Ethyloctanoic acid?

For 4-Ethyloctanoic acid, Upstream Products: 2-Ethylhexanol, 2-Ethylhexanal, 2-Ethylhexanenitrile; Downstream Products: 5-butyl-5-ethyldihydrofuran-2(3H)-one, Carbon dioxide.

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-Ethyloctanoic acid (CAS 16493-80-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-30810-1 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.