Add time:08/09/2019         Source:sciencedirect.com

A blend of the hydrochlorofluorocarbon isomers HCFC-225ca and HCFC-225cb has been proposed as a potential substitute for CFC-113, an important solvent and cleaning agent. The toxicity following repeated inhalation of an HCFC-225 isomer mixture was assessed in male Crl:CDBR rats. Three groups of 10 male rats were exposed to the test compound in air at design concentrations of 500, 5000, and 13,000 ppm. Rats were exposed 6 hr/day, 5 days/week for 2 weeks. A control group of 10 male rats was exposed to air only. Decreased serum cholesterol, triglycerides, and glucose; dose-related increased mean absolute and relative liver weights; and microscopic hepatocellular hypertrophy were present at all exposure concentrations. Hepatocellular hypertrophy correlated ultrastructurally to proliferation of peroxisomes. Clinical chemical parameters and organ weight and morphologic changes in the liver were reversible following 14 days of recovery.

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