5-Hydroxyvanillin
Also known as: 3,4-Dihydroxy-5-methoxybenzaldehyde, 5-Methoxyprotocatechualdehyde, Protocatechualdehyde, 5-methoxy-, 3-Methoxy-4,5-dihydroxybenzaldehyde, 4,5-Dihydroxy-3-methoxybenzaldehyde
5-Hydroxyvanillin (CAS 3934-87-0) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C8H8O4 and a molecular weight of 168.147 g/mol. Key properties include a melting point of 131-134°C, a boiling point of 339.9±37.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 143.1±20.0 °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.
- 3934-87-0
- Jingsj CID
- J-1992830-4
- Molecular Formula
- C8H8O4
- Molecular Weight
- 168.147 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 131-134°C |
|---|---|
| Boiling Point | 339.9±37.0 °C at 760 mmHg |
| Density | 1.4±0.1 g/cm3 |
| Flash Point | 143.1±20.0 °C |
| Exact Mass | 168.042252 |
| PSA | 66.76000 |
| LogP | 1.05 |
| Vapor Pressure | 0.0±0.8 mmHg at 25°C |
| Refractive Index | 1.631 |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
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 5-Hydroxyvanillin?
The CAS number of 5-Hydroxyvanillin is 3934-87-0.
What are the molecular formula and molecular weight of 5-Hydroxyvanillin?
5-Hydroxyvanillin has molecular formula C8H8O4 and molecular weight 168.147 g/mol.
Is 5-Hydroxyvanillin hazardous?
5-Hydroxyvanillin 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 5-Hydroxyvanillin?
For 5-Hydroxyvanillin, Upstream Products: 5-Bromovanillin, 5-Iodovanillin, Syringaldehyde; Downstream Products: 3,4-Dimethoxy-5-hydroxybenzaldehyde, 3,4,5-Trimethoxybenzaldehyde, Syringaldehyde.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "5-Hydroxyvanillin (CAS 3934-87-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1992830-4 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.