DBNPA (2,2-Dibromo-3-nitrilopropionamide) is a fast-acting, broad-spectrum industrial biocide. Its key feature is that it degrades rapidly in the environment, particularly under alkaline conditions, which makes it favored in applications requiring short-term microbial control without persistent residues.
Identity and Typical Properties
Parameter Information
CAS Number 10222-01-2
Molecular Formula C₃H₂Br₂N₂O
| Items | Index |
|---|---|
| Assay: | 99% |
| Physical Form | White to Off-White Powder |
| Melting Point ℃ | 122-126 |
| Moisture | 0.5% max |
| pH(1%W/V) | 5.0-7.0 |
Stability Relatively stable under acidic conditions; hydrolyzes rapidly under alkaline conditions
Primary Applications (Industrial Biocide)
DBNPA is registered and used across a wide range of industrial water and process systems for controlling bacteria, fungi, algae, and slime-forming microorganisms .
Industrial Cooling Water & Air Conditioning Systems: Used to control biofouling and microbial growth in recirculating and once-through cooling systems .
Paper & Pulp Industry: Employed for slime control in paper mill wet-end and short-term preservation of filler slurries and coatings. In some slurry preservation applications, it is noted as having no true alternatives with equivalent effectiveness .
Membrane Systems (RO/NF): Used as a biocide for reverse osmosis and nanofiltration membrane systems to prevent biofouling .
Metalworking Fluids: Added to water-based cutting fluids to prevent microbial degradation .
Oilfield & Enhanced Oil Recovery: Used in water floods, packer fluids, and recovery systems .
Coatings & Latex Preservation: Acts as a fast-acting, formaldehyde-free preservative for latex, starch, and mineral slurries .
Key Safety and Handling Considerations
Toxicity: DBNPA is very toxic by inhalation and toxic if swallowed. It is severely irritating to eyes (risk of serious damage) and can cause skin sensitization (allergic reactions) .
Protective Equipment: Handle with chemical-resistant gloves (e.g., nitrile, neoprene), safety goggles/face shield, and appropriate respiratory protection (e.g., P3 filter) if dust is generated .
Storage: Store in the original container, protected from light and heat, at temperatures below 35°C. Avoid contact with strong bases, strong oxidizers, amines, and reducing agents .
Environmental Note: While DBNPA itself is highly toxic to aquatic life, it degrades rapidly. Spent solutions can be deactivated by raising pH above 8 (e.g., with sodium hydroxide) and allowing hydrolysis to occur .