Methyl tert-butyl ether (MTBE)

CASRN 1634-04-4 | DTXSID3020833

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Not assessed under the IRIS Program.

System	RfC (mg/m³)	Basis	PoD	Composite UF	Confidence
Hepatic, Urinary, Ocular, Other	3	Increased absolute and relative liver and kidney weights and increased severity of spontaneous renal lesions (females), increased prostration (females), and swollen periocular tissue (males and females)	NOAEL (HEC): 2.59 x 10² mg/m³	100	Medium

Weight of Evidence for Cancer (PDF) (25 pp, 170 K)
Not assessed under the IRIS Program.

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.