4-Methoxybenzoic acid
Also known as: p-Anisic acid, 4-Methoxybenzoic acid, p-Methoxybenzoic acid, Draconic acid, Benzoic acid, 4-methoxy-, 4-Anisic acid, p-Anisic acid, 4-methoxybenzoic acid
4-Methoxybenzoic acid (CAS 100-09-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C8H8O3 and a molecular weight of 152.147 g/mol. Key properties include a melting point of 182-185 °C(lit.), a boiling point of 278.3±13.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 115.5±13.3 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed, H315 — Causes skin irritation and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 100-09-4
- Jingsj CID
- J-1990673-1
- Molecular Formula
- C8H8O3
- Molecular Weight
- 152.147 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 182-185 °C(lit.) |
|---|---|
| Boiling Point | 278.3±13.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 115.5±13.3 °C |
| Exact Mass | 152.047348 |
| PSA | 46.53000 |
| LogP | 1.96 |
| Vapor Pressure | 0.0±0.6 mmHg at 25°C |
| Refractive Index | 1.546 |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Activity & Biological Data
| Target | Human Endogenous Metabolite |
|---|---|
| Additional Information | [1]. DeWeerd K, et al. Metabolism of the 18O-methoxy substituent of 3-methoxybenzoic acid and other unlabeled methoxybenzoic acids by anaerobic bacteria. Appl Environ Microbiol. 1988 May;54(5):1237-42. |
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-Methoxybenzoic acid?
The CAS number of 4-Methoxybenzoic acid is 100-09-4.
What are the molecular formula and molecular weight of 4-Methoxybenzoic acid?
4-Methoxybenzoic acid has molecular formula C8H8O3 and molecular weight 152.147 g/mol.
Is 4-Methoxybenzoic acid hazardous?
4-Methoxybenzoic acid has GHS signal word Warning and hazard statements H302 — Harmful if swallowed; H315 — Causes skin irritation; H319 — Causes serious eye irritation.
What are the upstream and downstream products of 4-Methoxybenzoic acid?
For 4-Methoxybenzoic acid, Upstream Products: 4,4'-Dimethoxybenzoin, 4-Bromoanisole, Carbon dioxide; Downstream Products: 2-Methoxyethyl 2-[(3-nitrophenyl)methylene]acetoacetate, 4-Methoxybenzohydrazide, 2-(4-Methoxyphenyl)-4,4-dimethyl-4,5-dihydrooxazole.
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-Methoxybenzoic acid (CAS 100-09-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1990673-1 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.