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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.

    UV Absorbers

    UV Absorbers are currently the most widely used type of light stabilizers, which can absorb the ultraviolet light in sunlight and fluorescent light sources without changing themselves. According to its structure, it can be divided into salicylates, benzophenones, benzotriazoles, substituted acrylonitriles, triazines, etc. The most widely used in industry are benzophenones and benzotriazoles class. "UV Absorbers" on Echemi mainly supplies raw materials for UV Absorbers.

    Flame Retardants

    Flame retardant is the application of flame retardant technology in real life. It is a special chemical additive used to improve the combustion performance of combustible and flammable materials. It is widely used in flame retardant processing of various decoration materials. Flame retardants are divided into two types: physically mixed additive flame retardants and chemically bonded reactive flame retardants. "Flame Retardants" on Echemi mainly supplies raw materials for Flame Retardants.

    Precious Metal Catalysts

    Precious metal catalyst is a precious metal material that can change the speed of a chemical reaction without itself participating in the final product of the reaction. Almost all precious metals can be used as catalysts, but commonly used are platinum, palladium, rhodium, silver, ruthenium, etc. Among them, platinum and rhodium are the most widely used. According to the type of catalytic reaction, precious metal catalysts can be divided into two categories: homogeneous catalysis and heterogeneous catalysis. "Precious Metal Catalysts" on Echemi mainly supplies raw materials for Precious Metal Catalysts.

    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.
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