4-hydroxy-3,5-diiodobenzoic acid
Also known as: 3,5-diiodo-4-hydroxybenzoic acid, Ioxynil acid, Ioxynic acid, NSC 1497, 4-carboxy-2,6-di-iodophenol, p-hydroxy-3,5-diiodobenzoic acid
4-hydroxy-3,5-diiodobenzoic acid (CAS 618-76-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C7H4I2O3 and a molecular weight of 389.91400 g/mol. Key properties include a melting point of 275°C (dec.), a boiling point of 346.4ºC at 760 mmHg, a density of 2.697g/cm3 and a flash point of 163.3ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 618-76-8
- Jingsj CID
- J-1132034-6
- Molecular Formula
- C7H4I2O3
- Molecular Weight
- 389.91400 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 275°C (dec.) |
|---|---|
| Boiling Point | 346.4ºC at 760 mmHg |
| Density | 2.697g/cm3 |
| Flash Point | 163.3ºC |
| Exact Mass | 389.82500 |
| PSA | 57.53000 |
| LogP | 2.29960 |
| Refractive Index | 1.784 |
Customs & Trade Information
| HS Code | 2918290000 |
|---|---|
| Summary | HS: 2918290000 other carboxylic acids with phenol function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives Tax rebate rate:9.0% Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward) VAT:17.0% MFN tariff:6.5% General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 4-hydroxy-3,5-diiodobenzoic acid?
The CAS number of 4-hydroxy-3,5-diiodobenzoic acid is 618-76-8.
What are the molecular formula and molecular weight of 4-hydroxy-3,5-diiodobenzoic acid?
4-hydroxy-3,5-diiodobenzoic acid has molecular formula C7H4I2O3 and molecular weight 389.91400 g/mol.
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-hydroxy-3,5-diiodobenzoic acid (CAS 618-76-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1132034-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.