---
kind: "section"
citation: "21 C.F.R. § 184.1923"
title: "21"
number: "184.1923"
heading: "Urea."
url: "https://uscodex.org/cfr/21/184.1923"
---

# §184.1923. Urea.

- (a) **Urea (CO(NH<I>2</I>)<I>2</I>, CAS Reg.** No. 57-13-6) is the diamide of carbonic acid and is also known as carbamide. It is a white, odorless solid and is commonly produced from CO2 by ammonolysis or from cyanamide by hydrolysis.
- (b) The ingredient must be of a purity suitable for its intended use.
- (c) In accordance with [§ 184.1(b)(1)](/cfr/21/184.1.md?p=b-1), the ingredient is used in food with no limitation other than current good manufacturing practice. The affirmation of this ingredient as generally recognized as safe as a direct human food ingredient is based upon the following current good manufacturing practice conditions of use:
  - (1) The ingredient is used as a formulation aid as defined in [§ 170.3(o)(14)](/cfr/21/170.3.md?p=o-14) of this chapter and as a fermentation aid.
  - (2) The ingredient is used in yeast-raised bakery products; in alcoholic beverages as defined in [§ 170.3(n)(2)](/cfr/21/170.3.md?p=n-2) of this chapter; and in gelatin products.
- (d) Prior sanctions for this ingredient different from the uses established in this section do not exist or have been waived.

## Notes

### Amendments

[48 FR 51616, Nov. 10, 1983, as amended at 49 FR 19816, May 10, 1984; 73 FR 8608, Feb. 14, 2008]

### Authority

Authority: 21 U.S.C. 321, 342, 348, 371.

### Source

Source: 42 FR 14653, Mar 15, 1977, unless otherwise noted.

### Amendments

[48 FR 51616, Nov. 10, 1983, as amended at 49 FR 19816, May 10, 1984; 73 FR 8608, Feb. 14, 2008]