4-(4-Methylphenoxy)benzoic acid
Also known as: Benzoic acid, 4-(4-methylphenoxy)-, 4-(p-Tolyloxy)benzoic acid, 4-Methyl-4'-carboxy-diphenylether, 4-p-Tolyloxy-benzoesaeure, 4-(4-Methylphenoxy)benzoic acid 97%, JR-7129
4-(4-Methylphenoxy)benzoic acid (CAS 21120-65-0) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C14H12O3 and a molecular weight of 228.24300 g/mol. Key properties include a melting point of 178-182ºC, a boiling point of 375.3ºC at 760mmHg, a density of 1.208g/cm3 and a flash point of 142.8ºC. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed, H319 — Causes serious eye irritation and H400 — Very toxic to aquatic life. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 21120-65-0
- Jingsj CID
- J-1508943-7
- Molecular Formula
- C14H12O3
- Molecular Weight
- 228.24300 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 178-182ºC |
|---|---|
| Boiling Point | 375.3ºC at 760mmHg |
| Density | 1.208g/cm3 |
| Flash Point | 142.8ºC |
| Exact Mass | 228.07900 |
| PSA | 46.53000 |
| LogP | 3.48550 |
| Vapor Pressure | 2.68E-06mmHg at 25°C |
| Refractive Index | 1.598 |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H319 — Causes serious eye irritation
- H400 — Very toxic to aquatic life
Customs & Trade Information
| HS Code | 2918990090 |
|---|---|
| Summary | 2918990090. 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-(4-Methylphenoxy)benzoic acid?
The CAS number of 4-(4-Methylphenoxy)benzoic acid is 21120-65-0.
What are the molecular formula and molecular weight of 4-(4-Methylphenoxy)benzoic acid?
4-(4-Methylphenoxy)benzoic acid has molecular formula C14H12O3 and molecular weight 228.24300 g/mol.
Is 4-(4-Methylphenoxy)benzoic acid hazardous?
4-(4-Methylphenoxy)benzoic acid has GHS signal word Warning and hazard statements H302 — Harmful if swallowed; H319 — Causes serious eye irritation; H400 — Very toxic to aquatic life.
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-(4-Methylphenoxy)benzoic acid (CAS 21120-65-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1508943-7 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.