StructureEthylene urea
CAS No. 121325-67-5
EC No. 204-436-4
Synonyms 2-Imidazolidinone; 2-Imidazolidinone hemihydrate; 2-Imidazolidone hemihydrate; Ethyleneurea; Ethylene urea hemihydrate; Imidazolidone

Ethylene urea

​The Ethylene Urea 87% - also known as 2-Imidazolidinone hemihydrate – is mainly used in various kinds of formaldehyde removing formulations such as high-effect formaldehyde removing detergents and long-term formaldehyde dissolution intermediates. In the flavor and fragrance industry the product is used as a release control agent. The pharma industry is using the product as an intermediate for antibiotics such as Mezlocillin and Azlocillin.

Main users are the leather, rubber, fragrance and textile coating industry.


  • Textile auxiliaries
  • Fragrance
  • Pharma


Beside the 87% crystal grade, the product is also available as a 30% aqueous solution


Shelf Life

Under proper storage conditions, the shelf life is 24 months for the crystal grade and 12 months for the solution.

Health & Safety

Detailed information on the product described can be found in our relevant Health and Safety Information (Material Safety Data Sheet)