IRIS

Nitrate

CASRN 14797-55-8 | DTXSID5024217

Noncancer Assessment

Reference Dose for Oral Exposure (RfD) (PDF) (12 pp, 106 K) Last Updated: 05/01/1991

System RfD (mg/kg-day) Basis PoD Composite UF Confidence
Hematologic 1.6 Early clinical signs of methemoglobinemia in excess of 10% (0-3 months old infants formula) NOAEL : 1.6
mg/kg-day
1 High

 


Reference Concentration for Inhalation Exposure (RfC) (PDF) (12 pp, 106 K)
Not assessed under the IRIS Program.

 

Cancer Assessment

Weight of Evidence for Cancer (PDF) (12 pp, 106 K)
Not assessed under the IRIS Program.

Quantitative Estimate of Carcinogenic Risk from Oral Exposure (PDF) (12 pp, 106 K)

Not assessed under the IRIS Program.

Quantitative Estimate of Carcinogenic Risk from Inhalation Exposure (PDF) (12 pp, 106 K)

Not assessed under the IRIS Program.

Program Outlook Details

Public Assessment Materials Date
Problem Formulation Materials/IRIS Assessment Plan Sep-2017
Suspended Dec-2018

Note: The nitrate (re)assessment was suspended in Dec-2018, but may be restarted as Agency priorities change.

Additional EPA toxicity information may be available by visiting the following sites:

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