Isothiazolidine is a chemical compound primarily used as a preservative in a variety of products such as shampoo, cosmetics, and cleaning agents. Its synonym includes 1,2-isothiazolin-3-one (MIT). This compound is also used as a biocide and fungicide in industrial water systems. Another synonym for isothiazolidine is 5-chloro-2-methyl-4-isothiazolin-3-one (CMIT), which is a common preservative found in household cleaning products, paint, and adhesives. Additionally, 2-methyl-4-isothiazolin-3-one (MIT) is another synonym for isothiazolidine and is used widely in the paper industry as a biocide. These synonyms are important to know when reading ingredient labels and selecting products.