Paint stripper or paint remover is a chemical product designed to remove paint, wood finishing, and , while also cleaning the underlying surface. Chemical paint removers are advantageous because they act on any kind of geometry and they are cheap. They can however be slow acting.
Paint can also be removed using mechanical methods (scraping or sanding) or heat (heat gun, infrared heater, or steam cleaning).
Aside from dichloromethane, some popular stripping solvents are N-methylpyrrolidone, dimethylformamide, benzyl alcohol, and dimethyl adipate. None of these are .
Paint strippers come in a liquid, or a gel ("thixotropic") form that clings even to vertical surfaces.
Solvent strippers may also have formulations with limonene (obtained from orange peels) (or other terpene solvents). Nitromethane is another commonly used solvent. Dimethyl sulfoxide is a less toxic alternative solvent used in some formulations. Unfortunately, these alternative stripping formulas are less effective compared to those based on dichloromethane.
Steam can be used on large surfaces or items to be stripped, such as window sash, can be placed inside a steam box.
Many traditional paint strippers were or are based on dichloromethane, which can pose serious health risksMacIsaac, J., Harrison, R., Krishnaswami, J., McNary, J., Suchard, J., Boysen-Osborn, M., Cierpich, H., Styles, L. and Shusterman, D. (2013), "Fatalities due to dichloromethane in paint strippers: A continuing problem". Am. J. Ind. Med. doi: 10.1002/ajim.22167 http://onlinelibrary.wiley.com/doi/10.1002/ajim.22167/abstract?deniedAccessCustomisedMessage=&userIsAuthenticated=false accessed 6/1/2013 and is banned in the United States and European Union for consumer use. Despite this, deaths from dichloromethane are extremely rare at fewer than 2.4 cases per year and associated mostly with users applying large amounts in confined, poorly ventilated spaces. When applied in reasonable amounts and with typical levels of ventilation, or outdoors, it is generally safe to use.
Removing old lead-based paint can disperse lead and cause lead poisoning, leading several US workplace and environmental regulations to address removal of old paint that could contain lead.
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