Octylisothiazolinone

Octylisothiazolinone, often abbreviated as OIT, is a biocide used to prevent the growth of microorganisms in various industrial and consumer products. It belongs to the class of isothiazolinone biocides, which are effective against a broad spectrum of bacteria, fungi, and algae. OIT works by disrupting the metabolic processes of these microorganisms, ultimately leading to their death.

Its primary application is as a preservative in water-based products that are susceptible to microbial contamination. This includes paints, coatings, adhesives, sealants, and various household cleaning products. OIT is also found in some industrial fluids, such as metalworking fluids and cooling tower water treatments, where it helps to maintain product integrity and prevent operational issues caused by microbial growth. In some regions, it may also be used in textile and leather preservation.

The effectiveness of OIT is influenced by factors such as pH, temperature, and the presence of other chemicals. While generally considered effective at low concentrations, its use is regulated in many parts of the world due to potential environmental and health concerns. Skin sensitization is a known hazard associated with isothiazolinones, and occupational exposure limits and product labeling requirements are often in place to mitigate these risks. Regulatory bodies continually assess the safety and efficacy of biocides like OIT to ensure responsible use.