Overview
Dibromohydantoin (DBDMH) is an organic bromine compound widely used as a disinfectant and sanitizer. It belongs to the family of halogenated hydantoins, known for their ability to release active halogens (bromine and chlorine) in aqueous solutions. This compound is particularly valued for its stability in solid form and controlled release of bromine, making it effective for prolonged disinfection. Initially developed for industrial water treatment, DBDMH has found applications in diverse sectors including aquaculture, food processing, and healthcare. Its broad-spectrum antimicrobial activity against bacteria, viruses, and fungi makes it a versatile choice for microbial control in various environments.
Physical and Chemical Properties
Dibromohydantoin appears as a white to light yellow crystalline powder with a slight bromine odor. It is thermally stable up to its melting point of 194-198°C, beyond which it decomposes. The compound is slightly soluble in water (approximately 2.2 g/L at 25°C) but more soluble in organic solvents like acetone and ethanol. When dissolved in water, DBDMH hydrolyzes to release hypobromous acid (HOBr), the active disinfecting species. This release mechanism is pH-dependent, with optimal activity in slightly acidic to neutral conditions (pH 6-7). The compound's stability in solid form allows for easy storage and transportation, while its controlled dissolution provides sustained antimicrobial action in aqueous systems.
Main Applications
In water treatment, DBDMH serves as an effective biocide for cooling towers, swimming pools, and industrial water systems. Its slow-release bromine mechanism provides residual disinfection while minimizing the formation of harmful disinfection byproducts compared to chlorine-based alternatives. The aquaculture industry extensively uses dibromohydantoin for pond disinfection and disease prevention in fish farming. Its effectiveness against common fish pathogens and lower toxicity to aquatic life at proper concentrations make it preferable to many alternatives. In food processing, it's employed for equipment sanitization and wash water treatment, particularly in poultry and seafood processing plants.
Safety and Storage
DBDMH is a strong oxidizing agent and requires careful handling. Proper personal protective equipment (PPE) including gloves, goggles, and respiratory protection should be used when handling the powder. The compound can cause skin and eye irritation, and inhalation of dust should be avoided. Storage conditions are critical for maintaining product stability. DBDMH should be kept in its original packaging in a cool, dry, well-ventilated area away from direct sunlight. It must be segregated from reducing agents, acids, and combustible materials to prevent hazardous reactions. Containers should be kept tightly closed when not in use to prevent moisture absorption and bromine release.
B2B Procurement Guide
When procuring dibromohydantoin disinfectant, buyers should first verify the CAS number (77-48-5) to ensure product authenticity. Reputable suppliers should provide certificates of analysis including purity (typically 96-99%), moisture content, and solubility characteristics. For bulk purchases, consider suppliers with proper hazardous material handling certifications and reliable logistics networks. Price negotiations should account for purity levels and packaging options (typically 25kg drums or custom quantities). Many suppliers offer technical support for application-specific dosage recommendations, which can be valuable for first-time users or specialized applications.
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