Nitrate Quickview (CASRN 14797-55-8)

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Status of Data for Nitrate

File First On-Line: 01/31/1987; Last Significant Revision: 05/01/1991

Category (section)	Status	Last Revised
Oral RfD Assessment	On-line	10/01/1991
Inhalation RfC Assessment	No data
Carcinogenicity Assessment	No data

Synonyms

14797-55-8
Nitrate

Nitric acid, ion(1-)

Critical Effect	Point of Departure*	UF	MF	RfD
Early clinical signs of methemoglobinemia in excess of 10% (0-3 months old infants formula)	NOAEL : 1.6 mg/kg-day	1	1	1.6 mg/kg-day

* The Point of Departure listed serves as a basis from which the Oral RfD was derived. See Discussion of Conversion Factors and Assumptions for more details.

Principal and Supporting Studies (Oral RfD)
- Human epidemiological surveys, Bosch et al., 1950; Walton, 1951
Confidence in the Oral RfD
- Study -- High
- Database -- High
- RfD -- High

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Reference Concentration for Chronic Inhalation Exposure (RfC)

Not Assessed under the IRIS Program.

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