1,4-Diiodobenzene
Also known as: p-Diiodobenzene, p-Benzene diiodide, p-di-I-benzene, Benzene, 1,4-diiodo-
1,4-Diiodobenzene (CAS 624-38-4) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C6H4I2 and a molecular weight of 329.91 g/mol. Key properties include a melting point of 131-133 °C(lit.), a boiling point of 285.0±0.0 °C at 760 mmHg, a density of 2.5±0.1 g/cm3 and a flash point of 137.7±15.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 624-38-4
- Jingsj CID
- J-16262-7
- Molecular Formula
- C6H4I2
- Molecular Weight
- 329.91 g/mol
- Category
- Aromatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 131-133 °C(lit.) |
|---|---|
| Boiling Point | 285.0±0.0 °C at 760 mmHg |
| Density | 2.5±0.1 g/cm3 |
| Flash Point | 137.7±15.3 °C |
| Exact Mass | 329.840210 |
| LogP | 4.11 |
| Vapor Pressure | 0.0±0.5 mmHg at 25°C |
| Refractive Index | 1.708 |
Customs & Trade Information
| HS Code | 2903999090 |
|---|---|
| Summary | 2903999090 halogenated derivatives of aromatic hydrocarbons VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:5.5% General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 1,4-Diiodobenzene?
The CAS number of 1,4-Diiodobenzene is 624-38-4.
What are the molecular formula and molecular weight of 1,4-Diiodobenzene?
1,4-Diiodobenzene has molecular formula C6H4I2 and molecular weight 329.91 g/mol.
What are the upstream and downstream products of 1,4-Diiodobenzene?
For 1,4-Diiodobenzene, Upstream Products: 4-Iodoaniline, Iodobenzene, benzene; Downstream Products: 4,4'-Biphenyldiboronic acid, 4-Iodo-N,N-diphenylaniline, 4-Iodobenzotrifluoride.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1,4-Diiodobenzene (CAS 624-38-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-16262-7 (accessed 2026-11-07).
Data for reference only; verify product details with suppliers before purchase.