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This section provides an overview for azobenzene as well as their applications and principles. Also, please take a look at the list of 8 azobenzene manufacturers and their company rankings. Here are the top-ranked azobenzene companies as of December, 2024: 1.Kishida Chemical Co.,Ltd., 2.Lab Chemicals, 3.Central Drug House.
Table of Contents
Azobenzene is an organic compound consisting of two benzene rings linked by an azo group (a nitrogen-nitrogen double bond). Its IUPAC name is diphenyldiazene, with a CAS number of 103-33-3 and a molecular weight of 182.22. Azobenzene has a melting point of 155°F and a boiling point of 560°F, existing as a solid at room temperature. It is insoluble in water, but soluble in organic solvents like ether, benzene, and alcohol.
The term "azobenzene" sometimes collectively refers to a group of aromatic azo compounds with various functional groups on the benzene ring.
Azobenzene, including its derivatives, is widely used as a dye or pigment due to its ability to absorb visible light. Its rod-shaped structure also makes it useful as a mesogen group in liquid crystals. Azobenzene and its derivatives exhibit photochromic properties, undergoing trans-to-cis isomerization upon photoirradiation. These compounds are applied in fields such as light control materials, optical recording materials, optical switches, and functional inks.
Azobenzene is characterized by its strong absorption of light in the ultraviolet and visible regions, making it suitable for use as a dye. The trans form of azobenzene is yellow, while the cis form is orange. Azobenzene has both cis and trans conformational isomers, with the trans form being more stable due to reduced steric repulsion between the benzene rings.
Light irradiation or heating can control the ratio of these isomers, a process known as photoisomerization and thermal isomerization. Irradiating trans azobenzene with light of 300-400 nm wavelength converts it to the cis form, and vice versa with light of 400 nm or longer.
Azobenzene is synthesized from nitrobenzene with tin (II) chloride and sodium hydroxide or sodium amalgam. Its oxidation yields azoxybenzene and hydrogenation produces 1,2-diphenylhydrazine. Azobenzene is also known as a metal ligand, forming complexes with metals like nickel.
Available azobenzene types include standard samples for melting point determination and reagent products in various volumes. Its derivatives are widely used as dyes, with typical compounds being methyl red and methyl orange. Derivatives are usually synthesized through diazo coupling due to the electron-rich nature of the substituted aromatic rings.
*Including some distributors, etc.
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Thermo Fisher Scientific Inc., founded in 1956 and headquartered in Waltham, Massachusetts, is a manufacturer and supplier of life science solutions, analytical instruments, specialty diagnostics, laboratory products, and biopharma services. Through its brand names, including Invitrogen, Fisher Scientific, Patheon, Applied Biosystems, and Gibco, among others, the company provides a wide range of products, which include chromatography systems, thermal cyclers, automated cell counters, fermenters, and DNA polymerases. The company’s annual revenue is over 40 billion USD, and it serves several fields, including customers working in clinical diagnostic labs, research institutions, hospitals, government agencies, and pharmaceutical/biotech companies.
Kanto Chemical Co. Inc., founded in 1944 and headquartered in Tokyo, Japan, is a reagent manufacturer with overseas affiliates in other countries, including China, France, USA, Taiwan, and Malaysia. Its product portfolio includes analytical reagents, ionic liquids, Iodine compounds, ultra-pure chemicals, and water analysis kits. The company is also developing regenerative medicine and genetics reagents and has over 50,000 products. It has several certifications, including ISO 9001, acquired in 1994, making it the first Japanese company in the reagent industry. Other certifications are ISO 14001, ISO 13485, and ISO/IEC 17025.
Kishida Chemical Co. Ltd., established in 1924 and headquartered in Osaka, Japan, is a manufacturer of reagents and high-purity chemicals and also does drug discovery support activities. Its product portfolio includes fine chemicals, research chemicals, ionic liquid, organic micro-analytical reagents, and chemical reagents for analysis. The products support several industries, including reagent business, battery material, drug discovery, and life science. The company is ISO 14001 certified and supplies several companies worldwide, including Meterion Advanced Chemicals Inc., Acros Organics, ChemBridge Corporation, Decon Laboratories, and InerBioScreen Ltd.
Millipore Sigma, formerly known as Sigma-Aldrich, was created in 175 through the merger of Sigma Chemical Company and Aldrich Chemical company and today is a subsidiary of Merck. Millipore Sigma is a life science and biotechnology company serving the industry with several products and services. Some of their product categories include peptide synthesis materials, biochemicals, building blocks, catalysts, chemical biology, chemical synthesis, flavors & fragrances, formulation, lab chemicals, lab safety, APIs, and stable isotopes. Services include characterization, contract manufacturing, custom products, software, support, testing, and mRNA development & manufacturing.
Lab Chemicals, founded in 1988 and headquartered in Mumbai, India, is a manufacturer, supplier, and exporter of bulk lab supplies and equipment. The company's wide range of products includes educational lab equipment, surgical kits, and clinical laboratory devices. It also provides cold chain equipment, communication equipment, and power generation devices. These products are used in university, commercial, and industrial research laboratories. The company's services include providing assistance with Ministry of Education tenders by supplying all the needs of global educational laboratories.
Founded in 1981, Central Drug House Ltd. serves the scientific community via manufacturing and marketing a library of over 9,000 products to laboratory fine chemicals and dehydrated culture media with emphasis on purity and service. Examples are acids & bases, adsorbents, disinfectants, indicator papers, oils, and solvents. CDH provides bio chemicals, research chemicals, laboratory reagents, various solvents, stains & indicators, and dehydrated culture media. CDH is ISO 9001 certified and CDHs’ products are in compliance with specifications of IP, BP, USP, and EP standards.
Apollo Scientific Ltd, established in 1993 and based in Cheshire, England, is a manufacturer and supplier of aromatic, heterocyclic, and aliphatic compounds. The company's product portfolio includes fluorinated building blocks, antibiotics for cell analysis, and silica gels. These products are used in various applications, including biotechnology, analytical laboratories for performing spectroscopic analyses for quality control, research, and testing purposes, as well as academic and research institutions. The company is ISO 9001 and ISO 14001 certified, with distributors globally in the United States, South Korea, and Japan.
National Analytical Corporation (NAC) is located in Mumbai, India. NAC was founded in 2009 as a distributor of laboratory grade chemicals used in numerous industries. NAC’s chemical offerings include biochemical & reagents such s Prunetin and 1,2-dipalmitoly-rac-glycerol, analytical grade chemicals such as chicoric acid and Vitamin E solutions, laboratory chemicals such as formic acid and nitric acid, gas chromatography chemicals such as Aalborg mass flowmeter battery kits and DEX 225, reference standard chemicals such as Palladium in HNO3, oral solid dosage forms, such as cellulosic and protect film coating systems, parenteral dosage forms, beverage & nutrition, and coating chemicals.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Kishida Chemical Co.,Ltd. |
50.0%
|
| 2 | Lab Chemicals |
16.7%
|
| 3 | Central Drug House |
16.7%
|
| 4 | KANTO CHEMICAL CO.,INC. |
16.7%
|
Derivation Method
The ranking is calculated based on the click share within the azobenzene page as of December 2024. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
India
|
3 | 50.0% |
|
Japan
|
2 | 33.3% |
|
United States of America
|
1 | 16.7% |
