Bromochlorodimethylhydantoin

Bromochlorodimethylhydantoin (CAS 32718-18-6), commonly known as BCDMH, is a halogen-release biocide used to control microbial growth in water systems and formulated products. It delivers both bromine and chlorine upon dissolution, providing broad-spectrum disinfection across a range of pH conditions. In water treatment, it is the active disinfectant in cooling towers.

Swimming pools and spa systems utilize this compound where controlled halogen release maintains effective sanitization without the handling risks of liquid chlorine or other volatile gases. Personal care formulators incorporate it as a preservative in rinse-off products such as shampoos and body washes. Its dual-halogen activity targets bacteria and fungi at low use concentrations.

Industrial and institutional cleaning products use it as a bleaching and sanitizing agent in hard surface disinfectants and laundry formulations to ensure high hygiene standards. In healthcare settings, it is used in instrument disinfection and surface sanitization applications requiring reliable broad-spectrum efficacy and consistent performance in various environments.

BCDMH is supplied as compressed tablets, granules, and powder to suit different dosing equipment. Standard grades include technical and water treatment grades for industrial use. Tablet forms are commonly available in various sizes for automated feeders. Purity specifications typically range from 96% to 99% active content depending on the intended application.