Urea

E number E927bCAS 57-13-6

Urea is a yeast nutrient and fermentation aid, used chiefly in winemaking and baking to supply nitrogen to the yeast.

Where it is and isn’t permitted

Status of Urea by jurisdiction. Every jurisdiction this site covers is listed, including those where the substance does not appear.
JurisdictionStatusScope and limitsCitation
United StatesFood and Drug AdministrationPermitted21 CFR 184.1923retrieved 2026-09-07
Codex AlimentariusCodex Alimentarius Commission / JECFANot listedDoes not appear on this jurisdiction’s permitted list. That is not the same as being prohibited.

What it is made from

Produced industrially from ammonia and carbon dioxide. Its 1828 laboratory synthesis was the first time an organic compound was made from inorganic material, which ended the idea that living things ran on a separate chemistry.

  • Vegan
  • Vegetarian
CAS registry number
57-13-6
InChIKey
XSQUKJJJFZCRTK-UHFFFAOYSA-N
PubChem
CID 1176

Every name it appears under

63 recorded names. A label may use any of them.

E number

  • E927b

CAS registry number

  • 57-13-6

As it appears in regulation

  • Urea

Other names

  • 20% Urea Cream
  • Alphadrate
  • Antisepsis bolus
  • Aqua Care
  • Aqua Care HP
  • Aquadrate
  • Azodicarboxylic acid-diamide
  • Balneum plus
  • Carbaderm
  • Carbamide
  • Carbamide resin
  • Carbonyl diamide
  • Carbonyldiamide
  • Carbonyldiamine
  • Caswell No. 902
  • Cem-urea
  • Clear 40
  • Cracked Skin Cream
  • E 927b
  • Elaqua xx
  • EPA Pesticide Chemical Code 085702
  • Flexifoot
  • Flexitol
  • Harnstoff
  • Hydromol intensive
  • INS NO.927A
  • INS-927A
  • Keratinamin
  • Lanaphilic
  • Mocovina
  • Nutraplus
  • Pastaron
  • Prespersion, 75 urea
  • Protexa
  • RYNODERM
  • Sential e
  • St.james balm
  • Sterile Urea
  • Supercel 3000
  • Ultra Mide
  • Umecta Mousse
  • Umecta Mousse Urea
  • Urea
  • Urea 39% Cream
  • Urea 40 Nail Gel
  • Urea 40 Percent
  • Urea Cream 40%
  • Urea Cream 41%
  • Urea Foam
  • Ureacin-10 lotion
  • Ureacin-40 Creme
  • Ureaphil
  • Ureophil
  • Urepearl
  • Urevert
  • UterCleanse
  • Vanamide
  • Varioform ii
  • Xurea

Systematic names

  • Urea

Hazard reference values

Values set by assessing bodies. A body that has not set a value is not listed here.
TypeValuePopulationAssessed byOpinion
ADI1—EFSAnot identified in the dataset

Evidence and how bodies read it

Studies, and the differing conclusions regulators drew from them, are curated by hand rather than machine-read, and none has been written for this substance yet.

Sources for this page

  • ecfr retrieved 2026-09-07

Full licence terms and publisher details on Sources. How this page is built and updated: Method.

Machine-readable:/api/v1/additives/urea.json