1,2-Diiodoethane

Also known as: Ethylene diiodide, Ethylene iodide, Ethane, 1,2-diiodo-, 1,2-di-iodoethane, 1,2-diodoethane, MFCD00001093

1,2-Diiodoethane (CAS 624-73-7) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C2H4I2 and a molecular weight of 281.862 g/mol. Key properties include a melting point of 80-82 °C(lit.), a boiling point of 206.0±8.0 °C at 760 mmHg, a density of 2.8±0.1 g/cm3 and a flash point of 100.9±13.9 °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.: 624-73-7
Jingsj CID: J-30082-3
Molecular Formula: C₂H₄I₂
Molecular Weight: 281.862 g/mol
Category: Aliphatic Hydrocarbons
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	80-82 °C(lit.)
Boiling Point	206.0±8.0 °C at 760 mmHg
Density	2.8±0.1 g/cm3
Flash Point	100.9±13.9 °C
Exact Mass	281.840210
LogP	2.56
Vapor Pressure	0.3±0.4 mmHg at 25°C
Refractive Index	1.675

GHS Safety & Compliance

IrritantSignal word: Warning

H315 — Causes skin irritation
H319 — Causes serious eye irritation
H335 — May cause respiratory irritation

Frequently Asked Questions

What is the CAS number of 1,2-Diiodoethane?

The CAS number of 1,2-Diiodoethane is 624-73-7.

What are the molecular formula and molecular weight of 1,2-Diiodoethane?

1,2-Diiodoethane has molecular formula C2H4I2 and molecular weight 281.862 g/mol.

Is 1,2-Diiodoethane hazardous?

1,2-Diiodoethane 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 1,2-Diiodoethane?

For 1,2-Diiodoethane, Upstream Products: 2-phenyl-1,3-dioxolane, Ethylene glycol, 1,2-Bis(trimethylsiloxy)ethane; Downstream Products: 2-Ethylpyridine, 4-Ethylpyridine, Iodoethene.

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

Last updated: 8/21/2026

How to cite: Jingsj. "1,2-Diiodoethane (CAS 624-73-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-30082-3 (accessed 2026-11-06).

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