[Chemical Knowledge]：Properties, uses, upstream and downstream raw materials, storage methods, physical properties of biphenyl diphenyl ether

Biphenol Properties

Biphenol (also known as diphenol or biphenyl phenol ketone, chemical formula: C12H10O) is an organic compound with a structure in which two benzene rings are connected by one hydroxyl group (-OH). Typically, biphenol is a colorless crystal with a faint phenolic odor. It has a melting point of 68-70°C, a boiling point of 298-299°C and a density of about 1.25g/cm³. Biphenol has good solubility, soluble in alcohols, ethers and chloroform and other organic solvents, but the solubility in water is low.

Biphenol Uses

Biphenol is widely used in many fields because of its unique chemical properties. It is an important chemical intermediate for the synthesis of pesticides, pharmaceuticals and dyes. For example, biphenols can be used as precursors for pesticides and herbicides, and can also be used in the manufacture of antibacterial drugs. Biphenol is used as a stabilizer for plastics and resins to prevent material degradation during use. It is also used as an antioxidant and is widely used in the rubber, food and cosmetic industries to extend the shelf life of products.

Upstream feedstock

The production of biphenol mainly depends on the chemical reaction of phenol and benzene. Phenol is obtained by sulfonation or oxidation of benzene in coal tar or petrochemical processes, while benzene is extracted from petroleum or coal distillation processes. The main method of producing biphenol is by alkylation of phenol or by hydrolysis of dichlorobenzene. These processes require the use of catalysts and specific reaction conditions to improve yield and purity.

biphenol downstream products

As an intermediate, the downstream products of biphenol are involved in many industries. The agricultural sector uses biphenols to produce highly efficient, low-toxicity pesticides, such as herbicides and fungicides. In the pharmaceutical industry, biphenols are used in the synthesis of antibacterial and anti-inflammatory drugs. The dye industry utilizes biphenols to produce dyes with good light stability and durability. Biphenols are used as stabilizers and antioxidants in the plastics and rubber industries to extend the life of products. The food and cosmetics industry also extends the shelf life and quality of products by adding biphenols.

BIPENOL PRODUCTION PROCESS

The production process of biphenol mainly includes two methods: alkylation of phenol and hydrolysis of dichlorobenzene. The alkylation reaction of phenol is the reaction of phenol and benzene at high temperature and high pressure under the action of a catalyst to produce biphenol. The advantage of this method is that the reaction conditions are relatively simple and the yield is high. The hydrolysis method of dichlorobenzene is to hydrolyze dichlorobenzene under alkaline conditions to generate biphenol and chloride. The advantages of this method are mild reaction conditions and less by-products. The selection of a specific production process needs to be based on the supply of raw materials, equipment conditions and market demand.

BIPENOL STORAGE METHOD

The storage of biphenol requires attention to its chemical properties and safety requirements. The biphenol should be stored in a cool, dry, well-ventilated warehouse, away from direct sunlight and high temperature environment. The storage container shall be a sealed glass or plastic container that prevents the ingress of moisture and oxygen from the air, which may cause oxidation and degradation of the biphenol. The biphenol is a toxic substance, and the storage area should be clearly marked and equipped with necessary protective equipment to prevent personnel from contacting and inhaling. During storage, the tightness of the container and the quality of biphenol should be checked regularly to ensure safe and effective use.

Safe disposal

When handling biphenol, attention should be paid to its toxicity and environmental impact. The biphenol has an irritating effect on the skin and mucous membranes, and inhalation of its vapor or dust may cause respiratory discomfort and poisoning. Therefore, operators should wear protective gloves, goggles and gas masks to avoid direct contact and inhalation. In the event of a leak, it should be ventilated immediately and cleaned with an adsorbent material such as sand or activated carbon to prevent diffusion. Discarded biphenol and clean-up materials shall be treated as hazardous waste to avoid environmental pollution.

BIPENOL MARKET PROSPECT

With the increasing demand for high-efficiency and low-toxicity raw materials in various industries, the market demand for biphenol is on the rise. Especially in the field of agriculture and medicine, biphenol, as an important intermediate, has a wide range of applications. With the increasingly stringent environmental regulations, the production and use of biphenol is also facing more challenges. Enterprises need to continuously improve production processes, reduce environmental pollution and energy consumption, and improve product quality and safety. Taken together, biphenol will continue to play an important role in the future chemical market.

Conclusion

As an important organic compound, biphenol has unique chemical properties and a wide range of applications. Its production involves a variety of raw materials and processes, and its storage and handling are subject to strict safety regulations. With the increase of market demand and the improvement of environmental protection requirements, the production and application of biphenol will face new opportunities and challenges. Through technological innovation and process improvement, biphenol will continue to play an important role in many industries and contribute to economic development and social progress.