Abstract
Dimethyl ether (DME) is a colourless gas with an ethereal odour. It is used mainly as a liquid refrigerant and an aerosol dispersant. Little or no data exist on the toxicology of this material. In the present study, groups of male and female rats were exposed to 0.02%, 0.2% and 2% v/v of DME in air, 6 h/day, 5 days/week for 30 weeks. At the end of the study the high-dose level male rats showed a significant reduction on liver weight compared with the control group; this was accompanied by raising SGPT levels. In high-dose female rats there was no significant effect on liver weight but the SGPT levels were raised above control values. No histological abnormalities were observed in the liver or in any other organ.
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