Methylnaphthalene CASRN 91-57-6 | IRIS

IRIS

System	RfD (mg/kg-day)	Basis	PoD	Composite UF	Confidence
Respiratory	4 x 10 ^-3	Pulmonary alveolar proteinosis	BMD ₀₅ : 4.7 mg/kg-day	1000	Low

Reference Concentration for Inhalation Exposure (RfC) (PDF) (21 pp, 158 K) Last Updated: 12/22/2003
Information reviewed but value not estimated.

Weight of Evidence for Cancer (PDF) (21 pp, 158 K) Last Updated: 12/22/2003

WOE Characterization	Framework for WOE Characterization
Data are inadequate for an assessment of human carcinogenic potential	Revised Draft Guidelines for Carcinogen Risk Assessment (U.S. EPA, 1999)

Basis:

Under the draft revised guidelines for carcinogen risk assessment (U.S. EPA, 1999), EPA concludes the data are inadequate for an assessment of human carcinogenic potential of 2-methylnaphthalene. Based on the absence of data concerning the carcinogenic potential of 2-methylnaphthalene in humans and limited equivocal evidence in animals.
This may be a synopsis of the full weight-of-evidence narrative.

Not assessed under the IRIS Program.

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.

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