o-Tolylacetic acid
Also known as: 2-Methylphenylacetic acid, 2-Tolylacetic acid, o-Methylphenylacetic acid, ortho-tolylacetic acid, (2-Methylphenyl)acetic acid, 2-(2-methylphenyl)acetic acid
o-Tolylacetic acid (CAS 644-36-0) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H10O2 and a molecular weight of 150.174 g/mol. Key properties include a melting point of 88-90 °C(lit.), a boiling point of 279.3±9.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 176.5±13.9 °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.
- 644-36-0
- Jingsj CID
- J-48894-8
- Molecular Formula
- C9H10O2
- Molecular Weight
- 150.174 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 88-90 °C(lit.) |
|---|---|
| Boiling Point | 279.3±9.0 °C at 760 mmHg |
| Density | 1.1±0.1 g/cm3 |
| Flash Point | 176.5±13.9 °C |
| Exact Mass | 150.068085 |
| PSA | 37.30000 |
| LogP | 1.97 |
| Vapor Pressure | 0.0±0.6 mmHg at 25°C |
| Refractive Index | 1.546 |
| Additional Property | insoluble |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
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 o-Tolylacetic acid?
The CAS number of o-Tolylacetic acid is 644-36-0.
What are the molecular formula and molecular weight of o-Tolylacetic acid?
o-Tolylacetic acid has molecular formula C9H10O2 and molecular weight 150.174 g/mol.
Is o-Tolylacetic acid hazardous?
o-Tolylacetic 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 o-Tolylacetic acid?
For o-Tolylacetic acid, Upstream Products: 2-Methylbenzyl chloride, Ethyl o-tolylacetate, 1,2-Benzenedimethanol; Downstream Products: Methyl 2-(2-(bromomethyl)phenyl)-3-methoxyacrylate, Methyl o-tolylacetate, 5-methyl-3,4-dihydro-1H-naphthalen-2-one.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "o-Tolylacetic acid (CAS 644-36-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-48894-8 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.