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1,3-Diiodobenzene

Also known as: m-Diiodobenzene, 1,3-diiodo-benzene, Benzene, 1,3-diiodo-, Benzene, m-diiodo-, 1,3-Diiodo-benzen, MFCD00041731, EINECS 210-921-1

1,3-Diiodobenzene (CAS 626-00-6) 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 329.905 g/mol. Key properties include a melting point of 34-37 °C(lit.), a boiling point of 285.7±13.0 °C at 760 mmHg, a density of 2.5±0.1 g/cm3 and a flash point of 145.2±15.3 °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.
626-00-6
Jingsj CID
J-1994136-3
Molecular Formula
C6H4I2
Molecular Weight
329.905 g/mol
Category
Aromatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Melting Point34-37 °C(lit.)
Boiling Point285.7±13.0 °C at 760 mmHg
Density2.5±0.1 g/cm3
Flash Point145.2±15.3 °C
Exact Mass329.840210
LogP3.83
Vapor Pressure0.0±0.6 mmHg at 25°C
Refractive Index1.708

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 1,3-Diiodobenzene?

The CAS number of 1,3-Diiodobenzene is 626-00-6.

What are the molecular formula and molecular weight of 1,3-Diiodobenzene?

1,3-Diiodobenzene has molecular formula C6H4I2 and molecular weight 329.905 g/mol.

Is 1,3-Diiodobenzene hazardous?

1,3-Diiodobenzene 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 1,3-Diiodobenzene?

For 1,3-Diiodobenzene, Upstream Products: Tyramine hydrochloride, 3-Iodoaniline, 1,3,5-Triiodobenzene; Downstream Products: 1,3-Bis[(trimethylsilyl)ethynyl]benzene, 1,3-Diphenoxybenzene, 1,3-Dibenzoylbenzene.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "1,3-Diiodobenzene (CAS 626-00-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1994136-3 (accessed 2026-11-07).

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