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1,3-Diiodo-5,5-dimethylhydantoin

Also known as: DIH, 1,3-Diiodo-5,5-dimethylhydantoin, 1,3-Diiodo-5,5-dimethyl-2,4-imidazolidinedione, 1,3-Diiodo-5,5-dimethylimidazolidine-2,4-dione, N,N'-diiodo-5,5-dimethylhydantoin, Hydantoin,1,3-diiodo-5,5-dimethyl-

1,3-Diiodo-5,5-dimethylhydantoin (CAS 2232-12-4) is a compound in the Organohalogen Compounds category listed in the Jingsj chemical database. It has the molecular formula C5H6I2N2O2 and a molecular weight of 379.922 g/mol. Key properties include a melting point of 198°C(dec.)(lit.), a boiling point of 298.4±23.0 °C at 760 mmHg, a density of 2.7±0.1 g/cm3 and a flash point of 134.2±22.6 °C. It is classified under GHS with signal word Danger and hazard statements H272, H314 — Causes severe skin burns and eye damage and H400 — Very toxic to aquatic life. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
2232-12-4
Jingsj CID
J-17950-2
Molecular Formula
C5H6I2N2O2
Molecular Weight
379.922 g/mol
Category
Organohalogen Compounds
Last updated
8/21/2026

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Physicochemical Properties

Melting Point198°C(dec.)(lit.)
Boiling Point298.4±23.0 °C at 760 mmHg
Density2.7±0.1 g/cm3
Flash Point134.2±22.6 °C
Exact Mass379.851837
PSA40.62000
LogP2.67
Vapor Pressure0.0±0.6 mmHg at 25°C
Refractive Index1.743
Storage Conditions-20°C

GHS Safety & Compliance

Oxidising / Corrosion / Environmental HazardSignal word: Danger
  • H272
  • H314 — Causes severe skin burns and eye damage
  • H400 — Very toxic to aquatic life

Customs & Trade Information

HS Code2933990090
Summary2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 1,3-Diiodo-5,5-dimethylhydantoin?

The CAS number of 1,3-Diiodo-5,5-dimethylhydantoin is 2232-12-4.

What are the molecular formula and molecular weight of 1,3-Diiodo-5,5-dimethylhydantoin?

1,3-Diiodo-5,5-dimethylhydantoin has molecular formula C5H6I2N2O2 and molecular weight 379.922 g/mol.

Is 1,3-Diiodo-5,5-dimethylhydantoin hazardous?

1,3-Diiodo-5,5-dimethylhydantoin has GHS signal word Danger and hazard statements H272; H314 — Causes severe skin burns and eye damage; H400 — Very toxic to aquatic life.

What are the upstream and downstream products of 1,3-Diiodo-5,5-dimethylhydantoin?

For 1,3-Diiodo-5,5-dimethylhydantoin, Upstream Products: 5,5-Dimethylhydantoin; Downstream Products: molecular iodine.

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-Diiodo-5,5-dimethylhydantoin (CAS 2232-12-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-17950-2 (accessed 2026-11-07).

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