Shandong Huashang Chemical Co., Ltd. is a high-tech enterprise focused on industry of fine chemicals research and develop, produce and sale. Shandong Huashang Chemical Co., Ltd. is located in Shan Dong Ji Nan China. we have the ability to provide you high quality products. More than 90 % of our products are exported to developed countries and regions such as north America, Europe, Japan, South Korea and the Middle East.
Basic Information
Product Name: 1,3-Dibromo-5,5-dimethylhydantoin
CAS Number: 77-48-5
Alias: DBDMH, Dibromodimethylhydantoin
Molecular Formula: C5H6Br2N2O2
Molecular Weight: 285.92
IUPAC Name: 1,3-dibromo-5,5-dimethylimidazolidine-2,4-dione
Structural Information
- Structure Type: Halogenated hydantoin organic bromine biocide
- Structural Features: Five-membered hydantoin heterocycle, two bromine atoms bonded to nitrogen atoms; slow-release active bromine in water, strong bactericidal, algaecidal and disinfection performance
Physical & Chemical Properties
- Appearance: White to pale yellow crystalline powder or granules
- Odor: Slight pungent bromine odor
- Melting Point: 197–203 °C (decomposition)
- Solubility: Slightly soluble in water; soluble in chloroform, ethanol, acetone; insoluble in aliphatic hydrocarbons
- Stability: Stable under dry sealed cool storage; decomposes when exposed to high temperature, moisture, strong alkali, reducing agents, releasing corrosive bromine gas; oxidizing substance, incompatible with organics, combustible materials
Synthesis & Applications
Production Method
5,5-Dimethylhydantoin reacts with bromine under alkaline environment, filter, wash and dry to obtain finished product.
Main Applications
- Water treatment biocide: Cooling tower circulating water, swimming pool, landscape water disinfection, algae removal
- Industrial disinfection: Paper mill slime control, textile bleaching & antibacterial finishing
- Sanitary disinfection: Disinfectant for environment, aquaculture water
- Organic synthesis brominating reagent: Mild selective bromination agent for aromatic compounds
Safety & Storage Instructions
GHS Hazard Classification
- H272 May intensify fire; oxidizer
- H314 Causes severe skin burns and eye damage
- H330 Fatal if inhaled
- H400 Very toxic to aquatic life
Personal Protection
Full-face chemical goggles, acid-resistant protective clothing, butyl nitrile gloves, gas respirator; operate in well-ventilated fume hood, strictly avoid contact with reducing agents and combustibles
Storage Condition
Hermetically sealed plastic drum, cool dry ventilated warehouse (≤25°C); separate from organics, reducing agents, ammonia, strong alkali, combustible goods
Transportation
Class 5.1 oxidizing solid hazardous chemical; waterproof packaging, avoid violent collision, sunlight and dampness
Quality Specifications
- Active bromine content: ≥54.0%
- Loss on Drying: ≤0.5%
- pH (saturated aqueous solution): 4.0–6.0
- Particle size: Custom powder/granule grades
Information Summary Table
| Item | Specification |
| CAS Number | 77-48-5 |
| Product Name | 1,3-Dibromo-5,5-dimethylhydantoin |
| Synonym | DBDMH |
| Molecular Formula | C5H6Br2N2O2 |
| Molecular Weight | 285.92 |
| Appearance | White pale yellow crystalline solid |
| Melting Point | 197–203°C (decompose) |
| Solubility | Slightly soluble in water, soluble in polar organic solvents |
| Purity Standard | Active bromine ≥54.0% |
| Storage Condition | Sealed cool dry storage, isolated from reductants & organics |
| Hazard Property | Strong oxidizer, corrosive, toxic inhalation hazard, high aquatic toxicity |
| Main Usage | Water sterilization algaecide, paper slime inhibitor, mild organic brominating reagent |
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