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1,3-Diiodopropane

Also known as: Trimethylene diiodide, Trimethylene Iodide, 1,3-Diiodopropane, contains copper as stabilizer, α,ω-Diiodopropane

1,3-Diiodopropane (CAS 627-31-6) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C3H6I2 and a molecular weight of 295.88900 g/mol. Key properties include a melting point of -20°C, a boiling point of 111-113 °C31 mm Hg(lit.), a density of 2.576 g/mL at 25 °C(lit.) and a flash point of >110.0 °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 Nov 3, 2026.

CAS No.
627-31-6
Jingsj CID
J-1383784-8
Molecular Formula
C3H6I2
Molecular Weight
295.88900 g/mol
Category
Aliphatic Hydrocarbons
Last updated
11/3/2026

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Physicochemical Properties

Melting Point-20°C
Boiling Point111-113 °C31 mm Hg(lit.)
Density2.576 g/mL at 25 °C(lit.)
Flash Point>110.0 °C
Exact Mass295.85600
LogP2.24650
Refractive Indexn20/D 1.642(lit.)

GHS Safety & Compliance

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

Customs & Trade Information

HS Code29033080

Frequently Asked Questions

What is the CAS number of 1,3-Diiodopropane?

The CAS number of 1,3-Diiodopropane is 627-31-6.

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

1,3-Diiodopropane has molecular formula C3H6I2 and molecular weight 295.88900 g/mol.

Is 1,3-Diiodopropane hazardous?

1,3-Diiodopropane 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-Diiodopropane?

For 1,3-Diiodopropane, Upstream Products: 1,3-Dibromopropane, Diiodomethane, 1,3-Propanediol; Downstream Products: 1,1,1-Trifluoro-4-iodobutane, 4,4,4-Trifluorobut-1-ene, 1-Phenylcyclobutanecarboxylic acid.

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-Diiodopropane (CAS 627-31-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1383784-8 (accessed 2026-11-09).

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