4-Hydroxybenzaldehyde
Also known as: p-Hydroxybenzaldehyde, 4-Hydroxybenzaldehyde, p-Formylphenol, PHBA
4-Hydroxybenzaldehyde (CAS 123-08-0) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C7H6O2 and a molecular weight of 122.121 g/mol. Key properties include a melting point of 112-116 °C(lit.), a boiling point of 246.6±13.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 101.3±12.4 °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.
- 123-08-0
- Jingsj CID
- J-3224-6
- Molecular Formula
- C7H6O2
- Molecular Weight
- 122.121 g/mol
- Category
- Aromatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 112-116 °C(lit.) |
|---|---|
| Boiling Point | 246.6±13.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 101.3±12.4 °C |
| Exact Mass | 122.036781 |
| PSA | 37.30000 |
| LogP | 1.39 |
| Vapor Pressure | 0.0±0.5 mmHg at 25°C |
| Refractive Index | 1.618 |
| Additional Property | 13 g/L (30 ºC) |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Activity & Biological Data
| Target | Human Endogenous Metabolite |
|---|---|
| Additional Information | [1]. Zhang J, et al. The Effect of 4-hydroxybenzaldehyde on the γ-aminobutyric Acid Type A Receptor. Malays J Med Sci. 2017 Mar;24(2):94-99. |
Customs & Trade Information
| HS Code | 2912499000 |
|---|---|
| Summary | 2912499000. other aldehyde-ethers, aldehyde-phenols and aldehydes with other oxygen function. VAT:17.0%. Tax rebate rate:9.0%. . MFN tariff:5.5%. General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 4-Hydroxybenzaldehyde?
The CAS number of 4-Hydroxybenzaldehyde is 123-08-0.
What are the molecular formula and molecular weight of 4-Hydroxybenzaldehyde?
4-Hydroxybenzaldehyde has molecular formula C7H6O2 and molecular weight 122.121 g/mol.
Is 4-Hydroxybenzaldehyde hazardous?
4-Hydroxybenzaldehyde 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 4-Hydroxybenzaldehyde?
For 4-Hydroxybenzaldehyde, Upstream Products: 4-Methoxybenzaldehyde, 4-Hydroxybenzaldehyde oxime, 4-Iodobenzaldehyde; Downstream Products: Benzoic acid, 2-[(4-formylphenoxy)methyl]-, methyl ester.
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-Hydroxybenzaldehyde (CAS 123-08-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-3224-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.