Isothiazolinone

Isothiazolinone (CAS 1003-07-2), also referred to as 3-Isothiazolone, is the core heterocyclic scaffold underlying a broad class of industrial biocides and preservatives.

It functions as the active structural basis for formulated antimicrobial agents used across water-based systems, personal care products, and industrial process fluids.

In personal care and cosmetics, isothiazolinone-based actives are incorporated into rinse-off and leave-on formulations to control microbial growth and extend shelf life.

Pulp and paper manufacturers use isothiazolinone chemistry to prevent slime-forming bacteria and fungi in process water and coating systems for industrial use.

In metalworking and lubricant fluids, it controls microbial contamination that would otherwise degrade fluid performance and corrode equipment during manufacturing.

Water treatment and oil and gas operations rely on isothiazolinone-derived biocides to manage biofilm formation in cooling towers, injection water, and produced water streams.

Isothiazolinone is supplied as a technical-grade material, typically as a liquid concentrate or aqueous solution, and is commonly blended into formulated biocide products.

Concentration levels in commercial blends vary depending on the target application and regulatory requirements. Technical-grade specifications are standard for industrial supply.