3-phenylimidazolidine-2,4-dione

Also known as: 2,4-Imidazolidinedione, 3-phenyl-, 3-Phenylhydantoin, N-Phenylhydantoin, 3-Phenyl-2,4-imidazolidinedione, 3-Phenyl-2,4-dioxoimidazolidine, 3-phenyl-imidazolidine-2,4-dione, NSC20118

3-phenylimidazolidine-2,4-dione (CAS 2221-13-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H8N2O2 and a molecular weight of 176.17200 g/mol. Key properties include a boiling point of 326.3ºC at 760mmHg, a density of 1.324g/cm3 and a flash point of 151.1ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 2221-13-8
Jingsj CID: J-1517159-2
Molecular Formula: C₉H₈N₂O₂
Molecular Weight: 176.17200 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	326.3ºC at 760mmHg
Density	1.324g/cm3
Flash Point	151.1ºC
Exact Mass	176.05900
PSA	49.41000
LogP	1.13660
Vapor Pressure	8.88E-05mmHg at 25°C
Refractive Index	1.599

Customs & Trade Information

HS Code	2933990090
Summary	2933990090. 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 3-phenylimidazolidine-2,4-dione?

The CAS number of 3-phenylimidazolidine-2,4-dione is 2221-13-8.

What are the molecular formula and molecular weight of 3-phenylimidazolidine-2,4-dione?

3-phenylimidazolidine-2,4-dione has molecular formula C9H8N2O2 and molecular weight 176.17200 g/mol.

What are the upstream and downstream products of 3-phenylimidazolidine-2,4-dione?

For 3-phenylimidazolidine-2,4-dione, Upstream Products: Potassium cyanate, 2-Chloro-N-phenylacetamide, Glycine; Downstream Products: N-(Phenylcarbamoyl)glycine.

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. "3-phenylimidazolidine-2,4-dione (CAS 2221-13-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1517159-2 (accessed 2026-11-09).

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