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4-Ethoxybenzoic acid

Also known as: p-Ethoxybenzoic acid, p-Carboxyphenetole, 4-ethoxy benzoic acid, Benzoic acid, 4-ethoxy-, Benzoic acid, p-ethoxy-, Methisosildenafil Impurity 3, MFCD00002545, EINECS 210-616-3

4-Ethoxybenzoic acid (CAS 619-86-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H10O3 and a molecular weight of 166.174 g/mol. Key properties include a melting point of 197-199 °C(lit.), a boiling point of 291.2±13.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 117.1±13.3 °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.
619-86-3
Jingsj CID
J-8719-4
Molecular Formula
C9H10O3
Molecular Weight
166.174 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point197-199 °C(lit.)
Boiling Point291.2±13.0 °C at 760 mmHg
Density1.2±0.1 g/cm3
Flash Point117.1±13.3 °C
Exact Mass166.062988
PSA46.53000
LogP2.49
Vapor Pressure0.0±0.6 mmHg at 25°C
Refractive Index1.537

GHS Safety & Compliance

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

Customs & Trade Information

HS Code2918990090
Summary2918990090. other carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 4-Ethoxybenzoic acid?

The CAS number of 4-Ethoxybenzoic acid is 619-86-3.

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

4-Ethoxybenzoic acid has molecular formula C9H10O3 and molecular weight 166.174 g/mol.

Is 4-Ethoxybenzoic acid hazardous?

4-Ethoxybenzoic 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-Ethoxybenzoic acid?

For 4-Ethoxybenzoic acid, Upstream Products: Bromoethane, 4-Hydroxybenzoic acid, Methyl 4-ethoxybenzoate; Downstream Products: 4-Ethoxyphenyl isocyanate, 4-Hydroxybenzoic acid, 4-Ethoxybenzoyl chloride.

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-Ethoxybenzoic acid (CAS 619-86-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-8719-4 (accessed 2026-11-09).

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