Used as a disinfectant in water treatment, particularly in swimming pools, spas, and industrial systems, as an alternative to chlorine. It effectively kills bacteria, viruses, fungi, and algae at low concentrations without producing strong odors, foam, or causing eye and skin irritation, and without altering pH levels. Also found in contact lens solutions, wound care products, and some personal care items like mouthwashes due to its antimicrobial properties. Its residual effect provides long-lasting protection against microbial growth and contamination.