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4-Ethoxy-2-hydroxybenzoic acid

Also known as: 4-Ethoxysalicylic acid, 4-Ethoxy-2-hydroxybenzoic acid, Benzoic acid, 4-ethoxy-2-hydroxy-, 4-ethoxy salicylic acid, 4-ethyloxysalicylic acid

4-Ethoxy-2-hydroxybenzoic acid (CAS 10435-55-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H10O4 and a molecular weight of 182.17300 g/mol. Key properties include a melting point of 153-157ºC(lit.), a boiling point of 337.7ºC at 760mmHg, a density of 1.292g/cm3 and a flash point of 137.5ºC. 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.
10435-55-9
Jingsj CID
J-30298-7
Molecular Formula
C9H10O4
Molecular Weight
182.17300 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point153-157ºC(lit.)
Boiling Point337.7ºC at 760mmHg
Density1.292g/cm3
Flash Point137.5ºC
Exact Mass182.05800
PSA66.76000
LogP1.48910
Vapor Pressure4.04E-05mmHg at 25°C
Refractive Index1.572

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-Ethoxy-2-hydroxybenzoic acid?

The CAS number of 4-Ethoxy-2-hydroxybenzoic acid is 10435-55-9.

What are the molecular formula and molecular weight of 4-Ethoxy-2-hydroxybenzoic acid?

4-Ethoxy-2-hydroxybenzoic acid has molecular formula C9H10O4 and molecular weight 182.17300 g/mol.

Is 4-Ethoxy-2-hydroxybenzoic acid hazardous?

4-Ethoxy-2-hydroxybenzoic 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-Ethoxy-2-hydroxybenzoic acid?

For 4-Ethoxy-2-hydroxybenzoic acid, Upstream Products: 3-Ethoxyphenol, Potassium hydrogen carbonate, 2,4-Dihydroxybenzoic acid; Downstream Products: Ethyl 4-ethoxy-2-hydroxybenzoate.

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-Ethoxy-2-hydroxybenzoic acid (CAS 10435-55-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-30298-7 (accessed 2026-11-09).

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