Skip to main content
U.S. flag

An official website of the United States government

Here’s how you know

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

HTTPS

Secure .gov websites use HTTPS
A lock ( Lock A locked padlock ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

  • Environmental Topics
  • Laws & Regulations
  • Report a Violation
  • About EPA
IRIS
Contact Us

Perfluorodecanoic Acid (PFDA)

CASRN 335-76-2 | DTXSID3031860

  • IRIS Executive Summary (PDF) (7 pp, 403 K)

On this page:

  • Key IRIS
    Values
  • Organ/System
    Specific Values
  • Chemical
    Documents
  • Other EPA
    Information

Noncancer Assessment

Reference Dose for Oral Exposure (RfD) (PDF) (7 pp, 403 K) Last Updated: 07/15/2024

System RfD (mg/kg-day) Basis PoD Composite UF Confidence
Immune 2 x 10 -9
(Chronic)
Decreased serum antibody concentrations for tetanus and diphtheria in children at age 7 yr and PFDA measured at age 5 yr. BMDL (HED): 6.04 x 10-8
mg/kg-day
30 Medium
Immune 2 x 10 -9
(Subchronic)
Decreased serum antibody concentrations for both tetanus and diphtheria in children at age 7 yr and PFDA measured at age 5 yr BMDL (HED): 6.04 x 10-8
mg/kg-day
30 Medium

Note: BMDL of 1/2 SD


Reference Concentration for Inhalation Exposure (RfC) (PDF) (7 pp, 403 K) Last Updated: 07/15/2024

Not assessed under the IRIS Program.

Cancer Assessment

Weight of Evidence for Cancer (PDF) (7 pp, 403 K) Last Updated: 07/15/2024
Not assessed under the IRIS Program.

Quantitative Estimate of Carcinogenic Risk from Oral Exposure (PDF) (7 pp, 403 K)

Not assessed under the IRIS Program.

Quantitative Estimate of Carcinogenic Risk from Inhalation Exposure (PDF) (7 pp, 403 K)

Not assessed under the IRIS Program.

Organ/System-Specific RfDs

System RfD (mg/m3) Basis PoD UF Confidence Notes
Immune 2 x 10-9
(Chronic)
Decreased serum antibody concentrations for tetanus and diphtheria in children at age 7 yr and PFDA measured at age 5 yr. BMDL (HED): 6.04 x 10-8
mg/kg-day
30 Medium BMDL 1/2 SD
Developmental 2 x 10-9
(Chronic)
Decreased birth weight in male and female children. BMDL (HED): 5.44 x 10-8
mg/kg-day
30 Medium-Low BMDL 5% RD
Immune 2 x 10-9
(Subchronic)
Decreased serum antibody concentrations for both tetanus and diphtheria in children at age 7 yr and PFDA measured at age 5 yr BMDL (HED): 6.04 x 10-8
mg/kg-day
30 Medium BMDL 1/2 SD
Developmental 2 x 10-9
(Subchronic)
Decreased birth weight in male and female children. BMDL (HED): 5.44 x 10-8
mg/kg-day
30 Medium-Low BMDL 5% RD
Hepatic 6 x 10-7
(Subchronic)
Increased relative Liver weight in SD female rats BMDL (HED): 5.92 x 10-4
mg/kg-day
1000 Medium BMDL 10% RD
Reproductive 3 x 10-6
(Subchronic)
Decreased absolute whole epididymis weight in SD rats (Male Reproductive). BMDL (HED): 2.77 x 10-3
mg/kg-day
1000 Medium-Low BMDL 1 SD
Reproductive 1 x 10-6
(Subchronic)
Increased number of days spent in diestrus in SD rats (Female Reproductive). BMDL (HED): 1.12 x 10-3
mg/kg-day
1000 Medium-Low BMDL 5% RD

Chemical Documents

Jul 2024: Toxicological Review of Perfluorodecanoic Acid (PFDA) and Related Salts (Final Report, 2024) (Report)

Apr 2024: Toxicological Review of Perfluorodecanoic Acid (PFDA) and Related Salts (Interagency Science Discussion Draft, 2024) (Report)

Jun 2023: External Peer Review Activities for PFDA Integrated Risk Information System (IRIS) Assessment (Jul 2023) (Other)

Apr 2023: IRIS Toxicological Review of Perfluorodecanoic Acid (PFDA) and Related Salts (Public Comment and External Review Draft) (Report)

Mar 2022: Toxicological Review of Perfluorodecanoic Acid (Pfda) (Interagency Science Consultation Draft, 2022) (Report)

Nov 2019: Systematic Review Protocol for the Perfluorodecanoic Acid (Pfda) IRIS Assessments (Preliminary Assessment Materials) (Report)

Other EPA Information

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

Related Links

  • EPA Chemicals Dashboard - Perfluorodecanoic Acid (PFDA)

Critical Effects

Developmental
Developmental

Hepatic
Hepatic

Immune
Immune

Reproductive
Reproductive

Chemical Structure

Perfluorodecanoic Acid (PFDA)
  • IRIS Home
  • About IRIS
  • IRIS Recent Additions
  • IRIS Calendar
  • IRIS Assessments
  • Advanced Search
  • IRIS Program Materials
Contact Us to ask a question, provide feedback, or report a problem.
United States Environmental Protection Agency

Discover.

  • Accessibility Statement
  • Budget & Performance
  • Contracting
  • EPA www Web Snapshots
  • Grants
  • No FEAR Act Data
  • Privacy
  • Privacy and Security Notice

Connect.

  • Data.gov
  • Inspector General
  • Jobs
  • Newsroom
  • Open Government
  • Regulations.gov
  • Subscribe
  • USA.gov
  • White House

Ask.

  • Contact EPA
  • EPA Disclaimers
  • Hotlines
  • FOIA Requests
  • Frequent Questions

Follow.