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4-Iodo-1,2-dimethylbenzene

Also known as: 1,2-Dimethyl-4-iodobenzene, 1-Iodo-3,4-dimethylbenzene, 3,4-Dimethyliodobenzene, 3,4-Dimethylphenyl iodide, 4-Iodo-o-xylene, 4-Iodo-1,2-dimethylbenzene, 1,2-Dimethyl-4-iodobenzene, Benzene, 4-iodo-1,2-dimethyl-, MFCD00040989, 3,4-dimethyl-1-iodobenzene, 3,4-Dimethylphenyl iodide, iodo-3,4-dimethylbenzene

4-Iodo-1,2-dimethylbenzene (CAS 31599-61-8) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C8H9I and a molecular weight of 232.061 g/mol. Key properties include a boiling point of 232.1±9.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 100.5±7.7 °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.
31599-61-8
Jingsj CID
J-1175296-8
Molecular Formula
C8H9I
Molecular Weight
232.061 g/mol
Category
Aromatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point232.1±9.0 °C at 760 mmHg
Density1.6±0.1 g/cm3
Flash Point100.5±7.7 °C
Exact Mass231.974884
LogP4.17
Vapor Pressure0.1±0.4 mmHg at 25°C
Refractive Index1.593

GHS Safety & Compliance

IrritantSignal word: Warning
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H335 — May cause respiratory irritation

Customs & Trade Information

HS Code2903999090
Summary2903999090 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-Iodo-1,2-dimethylbenzene?

The CAS number of 4-Iodo-1,2-dimethylbenzene is 31599-61-8.

What are the molecular formula and molecular weight of 4-Iodo-1,2-dimethylbenzene?

4-Iodo-1,2-dimethylbenzene has molecular formula C8H9I and molecular weight 232.061 g/mol.

Is 4-Iodo-1,2-dimethylbenzene hazardous?

4-Iodo-1,2-dimethylbenzene 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 4-Iodo-1,2-dimethylbenzene?

For 4-Iodo-1,2-dimethylbenzene, Upstream Products: o-xylene, molecular iodine, acetic acid; Downstream Products: 3,3',4,4'-TETRAMETHYLBIPHENYL, 3,4-Dimethylbenzaldehyde, 1,2-dimethyl-4-tosylbenzene.

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-Iodo-1,2-dimethylbenzene (CAS 31599-61-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1175296-8 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.