21 CFR § 184.1699 - Oil of rue.

---
identifier: "/us/cfr/t21/s184.1699"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "21 CFR § 184.1699 - Oil of rue."
title_number: 21
title_name: "Food and Drugs"
section_number: "184.1699"
section_name: "Oil of rue."
chapter_name: "FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES"
subchapter_number: "B"
subchapter_name: "FOOD FOR HUMAN CONSUMPTION"
part_number: "184"
part_name: "DIRECT FOOD SUBSTANCES AFFIRMED AS GENERALLY RECOGNIZED AS SAFE"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "21 U.S.C. 321, 342, 348, 371."
regulatory_source: "42 FR 14653, Mar 15, 1977, unless otherwise noted."
cfr_part: "184"
---


# 184.1699 Oil of rue.

(a) Oil of rue is the natural substance obtained by steam distillation of the fresh blossoming plants of rue, the perennial herb of several species of *Ruta—Ruta montana* L., *Ruta graveolens* L., *Ruta bracteosa* L., and *Ruta calepensis* L.

(b) Oil of rue meets the specifications of the “Food Chemicals Codex,” 4th ed. (1996), pp. 342-343, which is incorporated by reference in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies are available from the National Academy Press, Box 285, 2101 Constitution Ave. NW., Washington, DC 20055 (Internet address *http://www.nap.edu*), or may be examined at the Dockets Management Staff (HFA-305), Food and Drug Administration, 5630 Fishers Lane, Rm. 1061, Rockville, MD 20852, 240-402-7500, between 9 a.m. and 4 p.m., Monday through Friday, or at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202-741-6030, or go to: *http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html.*

(c) The ingredient is used in food under the following conditions:

Maximum Usage Levels Permitted

| Food (as served) | Parts per million | Function |
| --- | --- | --- |
| Baked goods and baking mixes, § 170.3(n)(1), of this chapter | 10 | Flavoring agent and adjuvant, § 170.3(o)(12) of this chapter. |
| Frozen dairy desserts and mixes, § 170.3 (n)(20) of this chapter | 10 | Do. |
| Soft candy, § 170.3(n)(38) of this chapter | 10 | Do. |
| All other food categories | 4 | Do. |

(d) Prior sanctions for this ingredient different from the uses established in this section do not exist or have been waived.

[42 FR 14653, Mar. 15, 1977, as amended at 49 FR 5613, Feb. 14, 1984; 64 FR 1760, Jan. 12, 1999; 81 FR 5596, Feb. 3, 2016; 88 FR 17724, Mar. 24, 2023]