DBNPA (2,2- DIBROMO-3-NITRILOPROPIONAMIDE)

Chemical Formula: C₃H₂Br₂N₂O

CAS Number: 10222-01-2

Appearance: Pure DBNPA is a white crystalline powder with a 99% purity profile. In industrial liquid forms, it is typically formulated as a 20% active solution using glycol-water carriers to maintain chemical stability and density controls.

Reverse Osmosis (RO) Systems: DBNPA is the gold standard for online and offline slug-dosing of RO systems. Because it degrades so rapidly, it decontaminates the membranes without causing long-term structural damage or violating wastewater discharge permits.

Industrial Cooling Towers: Used as an intermittent slug-dose biocide to rapidly shock and clean out stubborn biofilm, slime, and algae build-up in recirculating systems.

Controls severe slime-forming bacteria, fungi, and yeasts in paper machine process water loops. It ensures the paper quality isn't compromised by dark biological spots or tears.

Added to hydrofracturing fluids, drilling muds, produced water, and injection wells to rapidly kill Sulfate-Reducing Bacteria (SRB) before they can generate corrosive hydrogen sulfide gas (H₂S).

In-Can System Shock: If a batch of water-based paint, polymer emulsion, or slurry gets heavily contaminated during manufacturing, DBNPA is added as a "curative" shock biocide to sterilize the batch within hours before a long-term preservative (like BIT or CMIT) is introduced.

At pH 7.0, its half-life is roughly 24 hours.

At pH 8.0, its half-life drops drastically to less than 2 hours.

Ultra-Fast Kill Rate: Achieves a 99.999% microbial reduction within 15 to 30 minutes of dosing.

No Bacterial Resistance: Because its chemical mechanism is so aggressive and instantaneous, bacteria cannot mutate or build resistance against it.

Eco-Friendly Effluent: Ideal for facilities with strict environmental discharge limits, as it self-destructs into non-toxic components.

No Long-Term Preservation: It cannot be used as an "in-can" shelf-life preservative because it breaks down too quickly in water.

Alkaline Degradation: If a system operates continuously at a high pH ({pH} > 8.5), DBNPA degrades too rapidly to achieve its full biocidal potential unless dosed at higher, costlier shock-volumes.

Reducing Agent Sensitivity: Its activity is instantly neutralized by reducing agents such as sodium metabisulfite or hydrogen sulfide.

Hazards: Corrosive. Causes severe, irreversible eye damage and skin burns. May cause allergic skin reactions and is harmful if swallowed or inhaled.

PPE Requirements: Fully enclosed splash goggles, heavy-duty nitrile or butyl rubber gloves, a protective apron, and long sleeves. A vapor/mist respirator is mandatory if handled in confined spaces where misting occurs.

Storage: Store strictly at room temperature in its original UV-protected, tightly sealed container. Keep in a cool, dark, well-ventilated warehouse away from direct sunlight, heat sources, and strong alkalis or reducing agents. Tariffs and regulatory export classifications can be verified under global shipping standards for chemical cargo upon request.