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<p>[QUOTE=&quot;calcol, post: 3856484, member: 77639&quot;]Common plastics that are safe for acetone are polyethylene, polypropylene, and fluoroplastics (Teflon, Tefzel, etc.).&nbsp; Acetone can migrate through thin polyethylene (think baggie), so over time may disappear if stored in a container made of it.&nbsp; Common plastics that aren&#039;t safe are nylon, polyester, vinyl, ABS, and polystyrene.&nbsp; You have to gain some familiarity with plastics and be able to recognize them by look, feel and smell.&nbsp; Application can be a reasonable guide, but you can get fooled.&nbsp; Most food containers are polyethylene or polypropylene (they&#039;re usually translucent), but some are polyester (often clear).&nbsp; Prescription vials these days are usually polyethylene or polypropylene or a mix called polyallomer, but they used to be polystyrene and some may still be.&nbsp; Best is to test a small area of plastic with a bit of acetone and see how it reacts.</p><p><br /></p><p>Cal[/QUOTE]</p><p><br /></p>

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