DBDMH(link:https://www.bloomtechz.com/basic-chemicals/raw-materials/dbdmh-cas-77-48-5.html), chemical name 1,3-Dibromo-5,5-dimethylhydantoin, is an organic compound that exists in the form of white crystals. It usually appears as a colorless or slightly yellowish solid, but can also be a crystalline powder. Its molecular formula is C5H6Br2N2O2, its relative molecular mass is 285.92 g/mol, and its CAS 77-48-5. The solubility in water is low, about 1.5 g/L. However, in some organic solvents, such as methanol, ethanol, and methylene chloride, DBDMH has good solubility. It decomposes at high temperature and has no definite boiling point. The crystal structure has been studied. It belongs to the monoclinic crystal system with unit cell parameters a = 10.602 Å, b = 7.244 Å, c = 9.688 Å, and β = 96.53°. In crystals, DBDMH molecules are linked to each other by hydrogen bonds. It has good thermal stability and can exist stably within a certain temperature range. However, at elevated temperatures (beyond its melting point), DBDMH decomposes, releasing bromine gas. It can be widely used for disinfection in public places, surface disinfection of environmental objects, disinfection of sanitary products, and food preservation. In aquaculture, it can effectively prevent and control various bacterial and fungal diseases such as fish, turtles, crabs, shrimps, frogs, shellfish, etc.; it can sterilize industrial water, tap water, domestic sewage, and swimming pools.
Description of some basic reaction properties of 1,3-Dibromo-5,5-dimethylhydantoin (DBDMH):
1. Solubility and stability:
DBDMH is soluble in water and can also be dissolved in organic solvents. It is relatively stable, but will decompose in the presence of high temperature, strong alkali or strong acid.
2. Hydrolysis reaction:
DBDMH undergoes a hydrolysis reaction with water to produce 1,3-dibromo-3,5-dimethylurea. This reaction is reversible and is affected by pH.
3. Ring-opening reaction of cyclic esters:
DBDMH can be ring-opened by reacting with an organic base to form a ring-opened product of a cyclic ester. Such reactions can be used to synthesize other organic compounds.
4. Substitution reaction:
The bromine atom of DBDMH has active reactivity and is prone to substitution reactions. For example, DBDMH can react with nucleophiles such as ammonia, amines, alcohols, etc., to replace one of the bromine atoms to form the corresponding substitution products.
5. Oxidation reaction:
Under certain conditions, DBDMH can be oxidized to the corresponding ketone or acid by an oxidizing agent such as hydrogen peroxide.
6. Amino reaction:
The amino groups in DBDMH can undergo substitution or condensation reactions with some compounds. For example, it can react with amine compounds to form the corresponding condensation products.
Here is an overview of some of the main uses of 1,3-Dibromo-5,5-dimethylhydantoin (DBDMH):
1. Water treatment agent:
DBDMH is widely used in the field of water treatment, especially in swimming pools and other disinfection water treatment systems. It can effectively kill bacteria, viruses, fungi and other microorganisms, keeping water clean, hygienic and safe.
2. Swimming pool sanitizer:
As a strong disinfectant, DBDMH can be used in swimming pools and spa facilities. It can effectively remove impurities in water, control the growth of algae and bacteria, and ensure that water quality meets hygienic standards.
3. Chemical intermediates:
DBDMH can be used as an important chemical intermediate in organic synthesis. Its bromine atom is active and suitable for substitution and condensation reactions. By reacting with reagents such as amines, alcohols, and ammonia, a series of compounds with specific functions and activities can be synthesized, which can be used to synthesize other compounds, such as drugs, spices, pigments, and dyes.
4. Environmental sanitation disinfectant:
DBDMH can be used for environmental sanitation and disinfection, including public places, medical facilities, food processing plants, etc. It can quickly kill surface bacteria, viruses, fungi and other microorganisms, and effectively prevent the spread and infection of diseases. The disinfection effect of DBDMH is long-lasting and stable, providing long-lasting protection.
5. Industrial use:
DBDMH can also be used in some industrial applications, such as biological sludge control in the pulp and paper industry, oilfield water injection treatment, etc.
6. Water purifier:
DBDMH can be used as a water purifier, especially for water treatment for industrial use. It can remove organic pollutants, suspended solids and microorganisms in water, and improve the cleanliness and purity of water quality. DBDMH can also be used for biological sludge control in the pulp and paper industry, helping to improve the production process and product quality.
7. Oilfield water injection treatment:
DBDMH is used in the process of oilfield water injection treatment to control biological contamination in injected water. In oil field development, in order to maintain oil well productivity, water injection is often required to maintain subsurface pressure. However, there is a problem with microbial contamination of the injection water, which can cause sediment to plug wells and pipelines. As a disinfectant, DBDMH can effectively control bacteria and algae in injected water, and keep oil wells and pipelines unblocked.
These are just an overview of some of the main uses of DBDMH, there are actually many more possible application areas and market segments. For specific purposes and industry needs, please carefully understand the relevant regulations and recommendations before use, and consult professionals for advice.
1,3-Dibromo-5,5-dimethylhydantoin is an important organic compound with a wide range of applications. The following is a key summary of the development history of this compound:
Early 20th century to 1940s:
- In 1908, Lewin H. Hoffmann first synthesized a similar substance—1,3-Dibromo-5-methyl-5-phenylhydantoin.
- In 1945, American chemist William G. Scott synthesized 1,3-Dibromo-5,5-dimethylhydantoin and found that it had good disinfection properties.
1950s to 1970s:
- In 1957, American scientist Arthur J. Haberzettl and others further studied the disinfection performance of DBDMH and applied it in the field of water treatment.
- In the 1960s, DBDMH began to be widely used as a swimming pool disinfectant, replacing traditional chloride disinfectants.
- In the 1970s, the application of DBDMH gradually expanded to other fields, such as disinfection and anti-mold treatment of textiles, rubber, leather, etc.
1980s to present:
- With increasing environmental awareness, more in-depth research has been conducted on the environmental impact and ecotoxicity of DBDMH.
- While DBDMH continues to be used, people are starting to look for greener alternatives to reduce the negative impact on the environment.
- Modern research focuses on improving the synthesis method of DBDMH, improving its potency and longevity, reducing its lethal concentration and toxicity, etc.
- In recent years, the application of DBDMH also involves the fields of electronics industry, cosmetics and drug synthesis, becoming an important chemical intermediate in these fields.
Overall, 1,3-Dibromo-5,5-dimethylhydantoin (DBDMH) has undergone continuous research and development since it was first synthesized in 1908. Its wide application and continuous improvement make DBDMH a compound widely used in disinfection, water treatment, textile, rubber and other fields. At the same time, with the improvement of environmental protection requirements, people are constantly looking for more environmentally friendly alternatives to further reduce the negative impact on the environment.