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2-Methyl-2-phenylpropanoic acid

Also known as: 2-Methyl-2-phenylpropionic acid, 2-Phenylisobutyric acid, alpha,alpha-Dimethylphenylacetic acid, 2,2-Dimethylphenylacetic acid, Dimethylbenzeneacetic acid, α,α-Dimethylbenzeneacetic acid

2-Methyl-2-phenylpropanoic acid (CAS 826-55-1) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C10H12O2 and a molecular weight of 164.201 g/mol. Key properties include a melting point of 80-82°C, a boiling point of 270.5±9.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 167.7±13.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
826-55-1
Jingsj CID
J-10251-2
Molecular Formula
C10H12O2
Molecular Weight
164.201 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point80-82°C
Boiling Point270.5±9.0 °C at 760 mmHg
Density1.1±0.1 g/cm3
Flash Point167.7±13.9 °C
Exact Mass164.083725
PSA37.30000
LogP2.20
Vapor Pressure0.0±0.6 mmHg at 25°C
Refractive Index1.525

Customs & Trade Information

HS Code2916399090
Summary2916399090 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 2-Methyl-2-phenylpropanoic acid?

The CAS number of 2-Methyl-2-phenylpropanoic acid is 826-55-1.

What are the molecular formula and molecular weight of 2-Methyl-2-phenylpropanoic acid?

2-Methyl-2-phenylpropanoic acid has molecular formula C10H12O2 and molecular weight 164.201 g/mol.

What are the upstream and downstream products of 2-Methyl-2-phenylpropanoic acid?

For 2-Methyl-2-phenylpropanoic acid, Upstream Products: 2-Methyl-2-phenylpropanenitrile, α-methylstyrene, Methacrylic acid; Downstream Products: 2-(4-Bromophenyl)-2-methylpropanoic acid, 2-Phenyl-2-propanol, Ethyl 2,2-dimethylphenylacetate.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "2-Methyl-2-phenylpropanoic acid (CAS 826-55-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-10251-2 (accessed 2026-11-09).

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