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EC number: 295-445-2 | CAS number: 92045-63-1 A complex combination of hydrocarbons obtained from prehydrogenated cracked naphtha after distillative separation of benzene- and toluene-containing hydrocarbon cuts and a higher boiling fraction. It consists predominantly of hydrocarbons having carbon numbers predominantly in the range of C4 through C11 and boiling in the range of approximately 30°C to 205°C (86°F to 401°F).
Four naphtha streams, among fifteen hydrocarbon compounds, were administered to two groups of male Fischer 344 rats by oral gavage at the dose levels of 500 mg/kg/day and 2000 mg/kg/day five days per week for four weeks. The procedure was designed to investigate hydrocarbon nephropathy. Animals in both groups experienced lethargy and significantly lower body weight gain was observed in the animals at the high-dose group. The only histopathological difference found was in the kidneys of all male rats. The kidney effects observed in male rats are indicative of alpha-2u-globulin nephropathy. These kidney effects are specific to male rats and are not considered to be of biological relevance to humans. Unleaded gasoline induced a strong nephrotoxic response.
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