4-Hydroxyisophthalaldehyde
Also known as: 5-Formylsalicylaldehyde, 1,3-Benzenedicarboxaldehyde, 4-hydroxy-, 2,4-Diformylphenol, 3-Formyl-4-hydroxybenzaldehyde, 4-Hydroxybenzene-1,3-dicarbaldehyde, 5-Formyl-2-hydroxybenzaldehyde, MFCD00003334
4-Hydroxyisophthalaldehyde (CAS 3328-70-9) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C8H6O3 and a molecular weight of 150.131 g/mol. Key properties include a melting point of 109°C, a boiling point of 266.0±25.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 128.9±19.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 3328-70-9
- Jingsj CID
- J-45762-5
- Molecular Formula
- C8H6O3
- Molecular Weight
- 150.131 g/mol
- Category
- Aromatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 109°C |
|---|---|
| Boiling Point | 266.0±25.0 °C at 760 mmHg |
| Density | 1.4±0.1 g/cm3 |
| Flash Point | 128.9±19.7 °C |
| Exact Mass | 150.031693 |
| PSA | 54.37000 |
| LogP | 1.80 |
| Vapor Pressure | 0.0±0.6 mmHg at 25°C |
| Refractive Index | 1.672 |
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-Hydroxyisophthalaldehyde?
The CAS number of 4-Hydroxyisophthalaldehyde is 3328-70-9.
What are the molecular formula and molecular weight of 4-Hydroxyisophthalaldehyde?
4-Hydroxyisophthalaldehyde has molecular formula C8H6O3 and molecular weight 150.131 g/mol.
What are the upstream and downstream products of 4-Hydroxyisophthalaldehyde?
For 4-Hydroxyisophthalaldehyde, Upstream Products: 4-Hydroxybenzaldehyde, 5-(Chloromethyl)-2-hydroxybenzaldehyde, 2-Hydroxy-5-iodobenzaldehyde; Downstream Products: 4-Hydroxyisophthalic acid, 3,4-Dihydroxybenzaldehyde, 2,4,6-Tris(hydroxymethyl)phenol.
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-Hydroxyisophthalaldehyde (CAS 3328-70-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-45762-5 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.