DBNPA biocide

DBNPA biocide full name is 2 2-Dibromo-3-Nitrilopropionamide. It belongs to halogen.

DBNPA can be used widely in many fields.

IRO Biocide has supplied DBNPA for 10 years. Customers choose us because of tecnical support and professional service.

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2 2-Dibromo-3-Nitrilopropionamide (DBNPA)

CAS No.: 10222-01-2

Molecular Formula: C3H2Br2N2O

Molecular Weight: 242

Structural Formula:

dbnpa structural formula


DBNPA is white crystals. It is soluble in actone, polyethyleneglycol, benzen, ethanol etc. DBNPA biocide is stable in acidic conditions, and decomposed in alkaline conditions or in the presence of hydrogen sulphide.  DBNPA is an efficient germicide for recycling water system. It can penetrate in the cytocyst of microbes quikly and kill them by reacting with some proteins in it, stopping the redox of cells.

DBNPA biocide has a good stripping properties, little poison, and no foam in system. The organic solutions can miscible with water.

Synthetic Methods:

1. Preparing chloroacetic acid, cyanoacetic acid, dialkyl aminoacrolein, amino-acetal and methyl cyanoacetate as starting material. Cyanoacetamide is  first made. And then you get the DBNPA by Cyanoacetamide bromination.

2. Synthesis method of chloroacetic acid as starting materials: chloroacetic acid neutralizes sodium carbonate or sodium hydroxide to produce sodium chloroacetate. Then sodium chloroacetate reacts with sodium cyanide in butanol solution to produce sodium of cyanoacetic acid. After acidizing it with concentrated hydrochloric acid. The esterification reaction betweent cyanoacetic acid with with methanol or butanol, get the methyl cyanoacetate. Then make Cyanoacetamide after aminolysis. At last you get DBNPA by brominating.


Item Index
Assay 99% min
Melting Point 122-128℃
pH(1% Aqueous Solution) 4.0-6.5
Loss on Drying ≤1%


As the biocides in broad spectrum, DBNPA biocide is widely used in industrial circulating water system, large air-condition and the large center of sewage treatment to eliminate microorganism and alga and shuck off clay. It is also used in the process of paper making to prevent reducing quality of paper by generation of microorganism.

DBNPA in industrial circulating water system

DBNPA biocide is suitable for metal cutting of cooling liquor, recovery system of oil, latex and ply-woods as anti-spy biocides. It has following advantages: easy to handle; no unusual oxidation hazards; similar performance and safety in paper and oilfield applications; used for slime control in the wet-end of the paper mill and performs exceptionally well against slime-forming bacteria. DBNPA has exhibited outstanding efficiency against in bio-films and against a broad spectrum of bacteria, fungus and yeasts.

DBNPA in paper making

Additionally, DBNPA series products are used in the short-term preservation of coatings and coating additives such as latex, starch and mineral slurries. DBNPA is a fast-acting/quick-kill biocide that is broad-spectrum and does not contain or release formaldehyde

Package and Storage:

25Kg carddrums with double PE inner bag or customers’ requirement. Store in dry cool and ventilation environment.

Storage time is two years.

DBNPA package from IRO

Chemical Names:

2 2-Dibromo-2-cyanoacetamide, 2 2-Dibromo-3-nitrilopropionamide, 10222-01-2, Dibromo cyanoacetamide,