Bronopol CAS# 52-51-7

Bronopol, Promotion Season Now in Store and Free Sample for Testing with Factory Price
  • Appearance: White or almost white crystal powder
  • Assay: 99%min
  • Packaging: 25kg/Fiber Drum
  • Sample: Available

Quality Control of Bronopol

Chemical Structure
Packing of Bretazenil

Description of Bronopol

Bronopol (INN) is an organic compound that is used as an antimicrobial. It is a white solid although commercial samples appear yellow.
Bronopol was invented by The Boots Company PLC in the early 1960s and first applications were as a preservative for pharmaceuticals. Owing to its low mammalian toxicity (at in-use levels) and high activity against bacteria (especially the troublesome Gram-negative species), bronopol became popular as a preservative in many consumer products such as shampoos and cosmetics. It was subsequently adopted as an antimicrobial in other industrial environments such as paper mills, oil exploration and production facilities, as well as cooling water disinfection plants.

Basic Info of Bretazenil

Basic Info

Chemical Name



2-Bromo-2-nitropropane-1,3-diol;BNPD;1,3-Propanediol, 2-bromo-2-nitro-;2-Bromo-2-nitro-1,3-propanediol;BNPK;



Molecular Formula


Molecular Weight







Safety Info



Hazard Class


Safety Statements


HS Code


WGK Germany


Packing Group



UN 3241

Risk Statements

R21/22; R37/38; R41; R50

Hazard Codes




Appearance & Physical State

White to slightly yellow crystals or crystalline powder


1.91 g/cm3

Boiling Point

358ºC at 760 mmHg

Melting Point


Flash Point


Refractive Index


Water Solubility

25 g/100 mL (22 ºC)


Stable. Hygroscopic. Incompatible with strong oxidizing agents, strong bases, strong reducing agents, acid chlorides and anhydrides, moisture.

Storage Condition

Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a cool, dry, well-ventilated area away from incompatible substances. Flammables-area. Store protected from moisture.


Numbering system




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What is Bronopol?

Part I: Introduction

     With the progress of science and technology and the development of society, chemical products have invariably permeated our daily lives, in medicine, food, cosmetics, electronics, industry, and other areas, becoming an essential part of our lives. One such product is Bronopol which has developed particularly rapidly in recent years. Do you know about Bronopol?

The official answer: Bronopol is an organic compound with the molecular formula C3H6BrNO4. It is a white to light yellow or yellow-brown crystalline powder at room temperature, odorless and tasteless, easily soluble in water, ethanol, and propylene glycol, but insoluble in chloroform, acetone, and benzene.

What’s the application of Bronopol?

Part 2: In-depth development

Bronopol is mainly used as a preservative and bactericide, added to cosmetic processes such as shampoos, balms, and creams at a concentration of 0.01%-0.02% in cosmetics, but also in detergents and fabric treatment agents. As a bactericidal agent. It can effectively control a variety of plant pathogenic bacteria. For cotton seed treatment it can control cotton black arm disease and bacterial carving blight caused by cotton angiosperm bacteria and has no harmful effect on cotton. It can also be used for rice seedling disease. Recommended concentration 800-1000mg/L. Also used in industrial circulating water, paper, and pulp, paint, plastics, cosmetics, wood, cooling water circulation system, and industrial use for sterilization, mold prevention, corrosion, algae control, etc.

Packed in sealed plastic drums, avoid metal containers. Store in a cool, dry, and ventilated place. Do not mix with strong oxidizing agents, strong bases, strong acids, and foodstuffs.

Irritating to skin, eyes, and respiratory system. Harmful in contact and if swallowed. Highly toxic to aquatic organisms. Acute oral LD50 in rats: 180-400 mg/kg, mice 270-400 mg/kg, dogs 250 mg/kg. 1600 mg/kg or more percutaneously in rats.


Sincere to the customer and in good faith of quality is our forever followed motto. It’s the basement to be a human and do business. We take all responsibility for our products and service sincerely. We are a company integrating R&D, production, and sales. The design, research, and development of pharmaceutical intermediates including more than 330 kinds of pharmaceutical intermediates such as Anti-infectives, Cardiovascular and Cerebrovascular Systems, Digestive System, Santi-tumor, Nervous System, Geriatric Drugs, and Gynecological Drugs. At the same time, we have more than 4,000 factories in strategic cooperation with nearly 50,000 chemical products, so we can provide you with a one-stop purchasing service, which greatly saves customers’ procurement costs and time.

Hello, I’m Pew Ni, the chemical products one-stop solution expert.

Hi, I‘m Peter Ni, the founder of Sincere-Chem, I’ve been running a company in China that exporting chemicals, pharmaceuticals, and intermediates for over 70 countries now. And a range of 50,000 products with the best quality and competitive price to meet your different purchasing needs.

CEO Email:

CEO Phone Number:
+86-188-6575 9396

CEO WhatsApp:
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Keywords of Bronopol

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United Kingdom Giles
United Kingdom Giles
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Peter has been my partner for many years, we met at the Shanghai CPHI Fair in 2014, for the first time I didn't have much interest in Peter's products because our company had a stable supplier. Although we didn't work together, Peter would often send me important news and interesting trend information about the industry, so we became good friends, even though I didn't place any orders with him during this time, even if it was a sample order. In September 2016, our original supplier was unable to provide us with the quality and delivery guarantees we needed, so I first thought of Peter and his company. Until now, we have maintained a very good personal friendship in addition to a steady business relationship.
India Shikhar
India Shikhar
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In all my years of sourcing from China, I first time to found that working with Sincere Chemical was so good, they helped me with all the production and delivery as well as a lot of technical expertise, which saved me a lot of time. When I first approached Peter for a quotation for Optical Brightener, he made me a detailed quotation with not only prices but also foreign trade details, company profile, company strengths, R&D capabilities, production capacity, packaging methods, raw material control, environmental protection, and much more. This information was a very important reference for me in making purchasing decisions. Sincere Chemical is a trustworthy supplier and I believe our business will grow from strength to strength!
Korea Kim
Korea Kim
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Hi, I'm Kim, I'm Peter's partner and although I don't like him very much (because he never gives me more money for my prices, hahaha) I'm still willing to write him customer feedback. As an international buyer, I have to deal with a lot of things every day and my inbox is often full of development letters. It's a lot of junk and meaningless pleasantries, which I don't like that much, but Peter's emails always give me a better understanding of the product and the industry. I am also very pleased with his work ethic, and I am very happy with his work every time I work with him, not only in providing quotations but also in facilitating all the details of my work so that I can concentrate more on other things, so he is the best supplier for me. Although his prices are not the lowest among all suppliers, his products give me the greatest peace of mind.
USA Franklin
USA Franklin
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Sincere Chemical team visited our USA factory in the year of 2017. We think highly of cooperation with them. We thanked you for the past excellent orders and best product quality. We also talked about some new products for future orders. We will be still in strategic cooperation in the future and help each other.
Canada Kate
Canada Kate
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I just got the product. The quality is awesome. I’m very happy. Hope to place soon a new order in your company. Also wish for our future business.
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Sincere Chemical is a reliable and professional company. Not only on exporting but also their professional team service. Their team gave us so many suggestions for our new project. We are really satisfied with their awesome service and best product quality. Sincere-Chem’s vendor code is 51465768 in our cooperated vendor list system.
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I have visited Sincere Chemical company in the year 2018. Their company can be considered as one of the most professional, customer-focused, and product quality-driven companies that I have worked with in recent years.
Brazil Aline
Brazil Aline
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We are a pharmaceutical products manufacturer in Brazil. I’m happy to cooperate with Sincere Chemical especially cooperate with Peter. Peter is patient and friendly. I’m satisfied with his 24*7 hours service. We are not only cooperators but also best friends with each other.
Mexico Gonzalo
Mexico Gonzalo
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Great service and very supportive. This is my first order and I feel fortunate to be with Peter and his company. Product received was the right good quality product, so my review is more related with the quality, service and shipment. Thank you for sending. next time I will order again. Good supplier...