Ammonia
CASRN 7664-41-7 | DTXSID0023872
Noncancer Assessment
Reference Dose for Oral Exposure (RfD) (PDF)
(10 pp, 309 K)
Last Updated:
Not assessed under the IRIS Program.
Reference Concentration for Inhalation Exposure (RfC) (PDF)
(10 pp, 309 K)
Last Updated: 09/20/2016
| System | RfC (mg/m3) | Basis | PoD | Composite UF | Confidence |
|---|---|---|---|---|---|
| Respiratory | 5 x 10 -1 | Decreased lung function and respiratory symptoms |
NOAEL
(ADJ):
4.9
mg/m3 |
10 | Medium |
Cancer Assessment
Weight of Evidence for Cancer (PDF)
(10 pp, 309 K)
Not assessed under the IRIS Program.
Quantitative Estimate of Carcinogenic Risk from Oral Exposure (PDF) (10 pp, 309 K)
Not assessed under the IRIS Program.
Quantitative Estimate of Carcinogenic Risk from Inhalation Exposure (PDF) (10 pp, 309 K)
Not assessed under the IRIS Program.
Program Outlook Details
| Public Assessment Materials | Date |
|---|---|
| Problem Formulation Materials/IRIS Assessment Plan | Apr-2018 |
| Suspended | Dec-2018 |
Note: The ammonia (re)assessment was suspended in Dec-2018, but may be restarted as Agency priorities change.
Apr 2019: IRIS Program Outlook April 2019-Suspended/Discontinued Assessment (Other)
Sep 2016: IRIS Toxicological Review of Ammonia Noncancer Inhalation (Final Report) (Report)
Aug 2013: IRIS Toxicological Review of Ammonia (Revised External Review Draft) (Report)
Jun 2012: IRIS Toxicological Review of Ammonia (External Review Draft) (Report)
Mar 2012: IRIS Toxicological Review of Ammonia (Interagency Science Consultation Draft) (Report)
- Human Health Benchmarks for Pesticides (HHBP). This database provides human health benchmarks for pesticides that may be present in drinking water.
- Office of Pesticide Programs Pesticide Chemical Search. This database provides links to health effects information and registration status for pesticides.
- Chemistry Dashboard. This database provides information on chemical structures, experimental and predicted physicochemical, and toxicity data.
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