4-Isobutylbenzoic acid
Also known as: 4-(2-Methylpropyl)benzoic acid, p-Isobutylbenzoic acid, Benzoic acid, 4-(2-methylpropyl)-, IBUPROFEN IMP S, NSC 168984, MFCD00191658
4-Isobutylbenzoic acid (CAS 38861-88-0) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C11H14O2 and a molecular weight of 178.228 g/mol. Key properties include a melting point of 144°C, a boiling point of 293.1±19.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 138.8±16.2 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 38861-88-0
- Jingsj CID
- J-24705-2
- Molecular Formula
- C11H14O2
- Molecular Weight
- 178.228 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 144°C |
|---|---|
| Boiling Point | 293.1±19.0 °C at 760 mmHg |
| Density | 1.1±0.1 g/cm3 |
| Flash Point | 138.8±16.2 °C |
| Exact Mass | 178.099380 |
| PSA | 37.30000 |
| LogP | 3.77 |
| Vapor Pressure | 0.0±0.6 mmHg at 25°C |
| Refractive Index | 1.530 |
Activity & Biological Data
| Additional Information | [1]. V. Beghetto, et al. Synthesis of 4-Isobutylbenzaldehyde an Important |
|---|
Customs & Trade Information
| HS Code | 2916399090 |
|---|---|
| Summary | 2916399090 other aromatic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 4-Isobutylbenzoic acid?
The CAS number of 4-Isobutylbenzoic acid is 38861-88-0.
What are the molecular formula and molecular weight of 4-Isobutylbenzoic acid?
4-Isobutylbenzoic acid has molecular formula C11H14O2 and molecular weight 178.228 g/mol.
What are the upstream and downstream products of 4-Isobutylbenzoic acid?
For 4-Isobutylbenzoic acid, Upstream Products: 1-[4-(2-Methylpropyl)phenyl]ethanone, 1-Iodo-2-methylpropane, benzoic acid; Downstream Products: 4-Isobutylbenzaldehyde, 4-Isobutylcinnamic acid, 3-(4-Isobutylphenyl)propanoic acid.
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-Isobutylbenzoic acid (CAS 38861-88-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-24705-2 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.