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1,4-Dioxane is a chemical with the chemical formula C4H8O2, and molecular weight of 88.10 g/mol. It occurs as a colourless flammable liquid that is miscible in water and has a faint pleasant odour, with an odour threshold of 24 parts per million (ppm). [1] 1,4-Dioxane is found as a trace contaminant of some chemicals used in cosmetics, detergents, and shampoos. However, manufacturers now reduce 1,4-dioxane from these chemicals to low levels before these chemicals are made into products used in the home. [1,2]
