Product Introduce

Product Name	Bronopol,BNP
Chemical Name	2-Bromo-2-nitro-1,3-propanediol
Type	Biocide/Antimicrobial/Preservative
CAS No.	52-51-7
Molecular Formula	C3H6BrNO4
Molecular Weight	200g/mol
Appearance	White to off-white crystalline powder
Purity	≥99.0%
Melting Point	126-131℃
Moisture	＜0.5%

Bronopol, also known as 2-Bromo-2-nitropropane-1,3-diol, is a broad-spectrum antimicrobial agent widely used to control the growth of bacteria and other microorganisms in aqueous formulations and industrial systems. With the chemical formula C₃H₆BrNO₄ and CAS No. 52-51-7, Bronopol is supplied as a white to off-white crystalline solid and is valued for its effectiveness at relatively low use concentrations.As an industrial biocide and preservative, Bronopol is particularly suitable for water-based products where microbial contamination can affect product stability, performance, shelf life, or manufacturing processes.

Application of Bronopol

Bronopol is used in a range of water-based industrial formulations as an antimicrobial preservative. Its applications include water treatment chemicals, industrial formulations, adhesives, coatings, polymer emulsions, metalworking fluids, and other water-based systems where microbial control is required.

In water-based coatings, adhesives and polymer dispersions, microbial growth can cause unpleasant odors, viscosity changes, gas formation, discoloration, or deterioration of the formulation. Bronopol can be used as part of a preservation system to help control microbial contamination during storage and use.

Besides, Bronopol is used in selected industrial and household formulations as a preservative.

For industrial water systems and process fluids, antimicrobial treatment is particularly important because microorganisms can multiply rapidly under suitable temperature, moisture and nutrient conditions. Bronopol may therefore be considered as one component of a broader microbial control strategy.

Storage and Handling

Bronopol should be stored in a cool, dry and well-ventilated area, in tightly closed original packaging and away from incompatible materials. Exposure to excessive heat, moisture or unsuitable storage conditions should be avoided.

FAQ

Q: Is Bronopol a preservative or a biocide?

A:It can function as both, depending on the intended application and regulatory classification. In formulations, it is commonly used as an antimicrobial preservative, while in certain industrial applications it may be used as a biocidal active substance.

Q: Can Bronopol be used in water-based products?

A: Yes. Bronopol is particularly relevant to water-based formulations, where microbial contamination can become a significant problem during storage and use. It may be considered for aqueous industrial products such as emulsions, coatings, adhesives and process formulations, subject to the regulatory status and permitted use level in the target market.

Q: What factors can affect the stability of Bronopol in a formulation?

A: Bronopol stability can be affected by pH, temperature, reducing agents, amines, sulfites, and other reactive components in the formulation. Prolonged exposure to elevated temperatures or incompatible ingredients may reduce its effectiveness. For this reason, compatibility and stability testing should be conducted before incorporating Bronopol into a finished product.

Q: Is Bronopol suitable for every type of microbial-control application?

A: No. Bronopol should not be treated as a universal biocide. Its performance depends strongly on the target microorganisms and the chemical environment of the formulation. Factors such as pH, temperature, organic load and interactions with other preservatives can influence performance. In some formulations, a combination of antimicrobial technologies may be more appropriate than relying on Bronopol alone.