4-iodobiphenyl
Also known as: 4-iodo-1,1'-biphenyl, 4-Phenyliodobenzene, EINECS 216-469-1, MFCD00019028
4-iodobiphenyl (CAS 1591-31-7) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C12H9I and a molecular weight of 280.104 g/mol. Key properties include a melting point of 110-114 °C, a boiling point of 322.7±21.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 145.8±11.1 °C. It is classified under GHS with signal word Danger and hazard statements H302 — Harmful if swallowed, H318 — Causes serious eye damage and H410 — Very toxic to aquatic life with long lasting effects. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 1591-31-7
- Jingsj CID
- J-1363265-6
- Molecular Formula
- C12H9I
- Molecular Weight
- 280.104 g/mol
- Category
- Aromatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 110-114 °C |
|---|---|
| Boiling Point | 322.7±21.0 °C at 760 mmHg |
| Density | 1.6±0.1 g/cm3 |
| Flash Point | 145.8±11.1 °C |
| Exact Mass | 279.974884 |
| LogP | 4.98 |
| Vapor Pressure | 0.0±0.7 mmHg at 25°C |
| Refractive Index | 1.641 |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H318 — Causes serious eye damage
- H410 — Very toxic to aquatic life with long lasting effects
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 4-iodobiphenyl?
The CAS number of 4-iodobiphenyl is 1591-31-7.
What are the molecular formula and molecular weight of 4-iodobiphenyl?
4-iodobiphenyl has molecular formula C12H9I and molecular weight 280.104 g/mol.
Is 4-iodobiphenyl hazardous?
4-iodobiphenyl has GHS signal word Danger and hazard statements H302 — Harmful if swallowed; H318 — Causes serious eye damage; H410 — Very toxic to aquatic life with long lasting effects.
What are the upstream and downstream products of 4-iodobiphenyl?
For 4-iodobiphenyl, Upstream Products: Biphenyl, 4-Bromobiphenyl, [1,1'-Biphenyl]-4-ylboronic acid; Downstream Products: 1,1':4',1'':4'',1''':4''',1''''-Quinquephenyl, p-quaterphenyl, p-Sexiphenyl.
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-iodobiphenyl (CAS 1591-31-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1363265-6 (accessed 2026-11-07).
Data for reference only; verify product details with suppliers before purchase.