from corrosion. Dichloromethane decomposes with time to hydrochloric acid, which readily reacts with propylene oxide or butylene oxide and therefore is removed from the solution. Chromate-based inhibitors give the mixture a characteristic yellow color. Other possibilities include polyphosphates, silicates, borates, and various antioxidants. Sequestrants and chelating agents are used to "disarm" metal ions present in the solution, which could otherwise reduce the efficiency of other components, and assist with cleaning stains, which often contain metal compounds. The most common sequestrants used in paint strippers are EDTA, tributyl phosphate, and sodium phosphate. Colorants may be added. Alternatives Heat guns are an alternative to chemical paint strippers. When heated, softened paint clumps and is easier to contain. High-temperature heat guns at or more create toxic lead fumes in lead-based paint, but low-temperature heat guns and infrared paint removers do not create lead fumes. Fire is a possible hazard of using heat guns. Steam can be used on large surfaces or items to be stripped, such as window sash, can be placed inside a steam box. Local laws Lead-based paint is banned in the United States. Removing old lead-based paint can disperse lead and cause lead poisoning, leading several US workplace and environmental regulations address removal of old paint that could contain lead. See also Distressing Nitromors References External links JAIC 1993: The composition of proprietary paint strippers Old-House Journal article on paint removers starts on page 58 "Urban Expression", a paper on the history of NYC graffiti. "How To Use Paint Stripper", an explanation on usage of paint strippers Household chemicals Industrial processes Painting materials Woodworking