IRIS

Dibutyl phthalate (DBP)

CASRN 84-74-2 | DTXSID2021781

IRIS Summary (PDF) (11 pp, 107 K)
Status: Development of the dibutyl phthalate (dbp) (re)assessment has been discontinued.

Key IRIS
Values
Assessment
Status
Chemical
Documents
Other EPA
Information

Noncancer Assessment

Reference Dose for Oral Exposure (RfD) (PDF) (11 pp, 107 K) Last Updated: 01/31/1987

System	RfD (mg/kg-day)	Basis	PoD	Composite UF	Confidence
Other	1 x 10^-1	Increased mortality	NOAEL : 1.25 x 10² mg/kg-day	1000	Low

Reference Concentration for Inhalation Exposure (RfC) (PDF) (11 pp, 107 K) Last Updated: 10/01/1990
Information reviewed but value not estimated.

Cancer Assessment

Weight of Evidence for Cancer (PDF) (11 pp, 107 K) Last Updated: 09/07/1988

WOE Characterization	Framework for WOE Characterization
D (Not classifiable as to human carcinogenicity)	Guidelines for Carcinogen Risk Assessment (U.S. EPA, 1986)

Basis:

Pertinent data regarding carcinogenicity was not located in the available literature.
This may be a synopsis of the full weight-of-evidence narrative.

Quantitative Estimate of Carcinogenic Risk from Oral Exposure (PDF) (11 pp, 107 K)

Not assessed under the IRIS Program.

Quantitative Estimate of Carcinogenic Risk from Inhalation Exposure (PDF) (11 pp, 107 K)

Not assessed under the IRIS Program.

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.

Note: The dibutyl phthalate (dbp) (re)assessment has been discontinued. A new/updated assessment will not be added to the IRIS database at this time.

Assessment Manager(s): Andrew Kraft (kraft.andrew@epa.gov), Dahnish Shams (shams.dahnish@epa.gov)