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    Catalyst and Auxiliary

    According to the definition of the International Union of Pure Chemistry and Applied Chemistry (IUPAC) in 1981: a catalyst is a substance that changes the reaction rate but does not change the Gibbs free energy of the overall reaction standard. There are many types of catalysts, which can be divided into liquid catalysts and solid catalysts according to the state; and homogeneous catalysts and heterogeneous catalysts according to the phase state of the reaction system. In industrial production, auxiliary chemicals added to improve the production process, increase product quality and output, or to give products a certain specific application performance. The variety of additives is vast and their performances vary greatly. Only when used properly can the effect be prominent. "Catalyst and Auxiliary" on Echemi mainly supplies raw materials for Catalyst and Auxiliary.

    Plastic Rubber Chemicals

    Rubber and plastics are a collective term for the rubber and plastic industries. Plastic and rubber are both high-molecular materials, mainly composed of carbon and hydrogen atoms, and some contain a small amount of oxygen, nitrogen, chlorine, silicon, fluorine, sulfur and other atoms, which have special properties and special uses. There are two types of rubber and plastic: natural rubber and synthetic rubber. "Plastic Rubber Chemicals" on Echemi mainly supplies raw materials for Plastic Rubber Chemicals.

    Petrochemical

    Petrochemical industry, generally refers to the chemical industry that uses petroleum and natural gas as raw materials. It has a wide range and many products. Petrochemical refers to the processing industry that uses petroleum and natural gas as raw materials to produce petroleum products and petrochemical products. There are four basic raw materials for petrochemical industry: acetylene (acetylene), olefin (ethylene, propylene, butene and butadiene), aromatic hydrocarbon (benzene, toluene, xylene) and syngas. "Petrochemical" on Echemi mainly supplies chemicals in the Petrochemical industry.

    Antioxidants

    Antioxidants are substances that prevent the adverse effects of oxygen. It is a type of substance that can help capture and neutralize free radicals, thereby eliminating free radical damage to the human body. Antioxidants as food additives can help fight food spoilage. Antioxidants are usually added to industrial products. A common use is as a stabilizer for fuels and lubricants to prevent oxidation. It can also be added to gasoline to prevent polymerization and prevent the formation of engine fouling. "Antioxidants" on Echemi mainly supplies raw materials for Antioxidants.
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