Question: can i use isopropyl alcohol to clean plastic?
Answer: It depends what you mean by 'plastic'. Poly(ethylene terephthalate), PET or PETE - PET is not very soluble in ethanol or isopropanol, but prolonged exposure may cause crazing or stiffening due to the dissolution of plasticizers. High-Density polyethylene, HDPE - HDPE is resistant to most things.