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<p>[QUOTE=&quot;calcol, post: 2981814, member: 77639&quot;]I&#039;ve worked with acetone in labs for years, mostly used for drying glassware, but other uses too.&nbsp; Main concern is that it is highly flammable, and in certain proportions, its vapor can form explosive mixtures with air. Toxicity from brief exposures is not a big concern.&nbsp; I don&#039;t recommend direct skin contact.&nbsp; If run over skin it can be absorbed, and it will partially de-fat the skin, leaving it dry and irritated. Breathing incidental vapors over a short period of time is not a concern, but could be harmful if prolonged (hours).&nbsp; Deliberately inhaling the vapor should not be done.&nbsp; If you detect a strong smell of it while working with it for more than a few minutes, ventilation is not adequate or too much of it is being allowed to evaporate.&nbsp; If there is a continuous strong smell, there is a significant risk of fire or explosion from spark or flame.</p><p><br /></p><p>Acetone is produced in the body, usually in small quantities from the metabolism of fat.&nbsp; However, in some diseases, like diabetes, it can be produced in large quantities.&nbsp; One of the signs of diabetic ketosis and coma is an acetone smell of the breath of the affected person or animal.&nbsp; </p><p><br /></p><p>Although environmental authorities will state that waste acetone should be taken to a waste disposal facility, small amounts can be poured down the drain with lots of accompanying water.&nbsp; Acetone will attack many plastics unless it&#039;s diluted with lots of water, so keep that in mind with regard to storage, use and disposal.&nbsp; Acetone is miscible with water in all proportions, so easily diluted to the point of being of little toxic or flammable risk.</p><p><br /></p><p>Do not attempt to distill acetone to purify it for re-use.&nbsp; There is a significant risk of fire or explosion if not done right.</p><p><br /></p><p>Cal[/QUOTE]</p><p><br /></p>

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