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.

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

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

Assessment Manager(s): James Avery (avery.james@epa.gov)

Step Assessment Materials Released to the Public Release Date Public Meeting Date
1 Problem Formulation Materials 09/2017 09/2017
  Suspended 12/2018  

You will need Adobe Reader to view some of the files on this page. See EPA’s PDF page to learn more.