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Home > Catalyst and Auxiliary
According to the catalyst definition by the International Union of Pure Chemistry and Applied Chemistry (IUPAC) in 1981, a catalyst is a substance that alters the reaction rate without affecting the Gibbs free energy of the overall standard reaction. Catalysts span diverse types: liquid and solid catalysts based on state, and homogeneous versus heterogeneous catalysts based on phase state within the reaction system. In industrial processes, auxiliaries like centrifuge catalysts enhance production processes, improve product quality, or enable specific application performance. The array of auxiliaries definition is extensive, with varied performance - optimal effects stem from proper usage. ECHEMI's "Catalyst and Auxiliary" section predominantly supplies raw materials for Catalyst and Auxiliary.

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Sourcing catalyst intermediates can be complex, but ECHEMI makes it simple. Connect with 315 trusted manufacturers and 309 verified distributors offering a wide range of catalysts, including auxiliaries, centrifuge catalysts, and specialty intermediates for chemical production, pharmaceuticals, and industrial applications. Find high-quality catalysts and get competitive quotes from reliable suppliers.
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1190 Catalyst and Auxiliary items

Alkanes, C22-40, chloro

CAS No: 106232-86-4

Categories: Catalyst and Auxiliary > Plastic Rubber Chemicals

Used as a polyvinyl chloride plasticizer. As a low-cost auxiliary plasticizer for polyvinyl chloride; mainly used for flame retardant of plastics and rubber, waterproof and fireproof additives for fabrics, additives for coatings, inks and pressure-resistant lubricants Additives; as a low-cost auxiliary plasticizer for PVC; used as a plasticizer and flame retardant, widely used in cables; mainly used for flame retardant plastics and rubber, waterproof and fireproof additives for fabrics, AdditiveMore

Sodium salt of polynaphthalene sulphonic acid

CAS No: 36290-04-7

Formula: C11H10O4S

Categories: Catalyst and Auxiliary > Polymer

The chemical name of the dispersant NNO is sodium methylene naphthalene sulfonate and sodium methylene naphthalene sulfonate. It has excellent diffusibility and protective colloidal properties, but has no surface activity such as penetrating foaming, and has affinity for protein and polyamide fibers. , No affinity for cotton, linen and other fibers. It is mainly used as dispersant in disperse dyes, vat dyes, reactive dyes, acid dyes and leather dyes, with excellent grinding effect, solubilizatioMore

Carbopol 940

CAS No: 76050-42-5

Categories: Catalyst and Auxiliary > Emulsion Stabilising

Carbopol 940 is a high molecular weight, cross-linked polyacrylic acid polymer that appears as a white, fluffy powder and is widely used for its thickening, suspending, and stabilizing properties. It is soluble in water and forms clear, high-viscosity gels upon neutralization within a pH range of 5 to 8. The polymer is highly efficient even at low concentrations and is compatible with a broad range of ingredients, making it ideal for use in cosmetics and pharmaceutical formulations such as gels, creams, and lotions.More

Ethyl acrylate-methacrylic acid-methyl methacrylate copolymer

CAS No: 25133-97-5

Formula: (C5H8O2.C5H8O2.C4H6O2)x

Categories: Catalyst and Auxiliary > Antistatic

acrylates copolymer is able to absorb skin secretions, thereby reducing skin shine and providing an improved skin surface for makeup application. Acrylates copolymer also imparts a pleasant feel to a cosmetic preparation and helps reduce any feeling of oiliness the product may have. It is incorporated into numerous types of cosmetic formulations including skin cleansers, oil control treatments, makeup, and loose and compressed powders. When used in conjunction with a variety of other ingredientsMore

1,2-Benzenedicarboxylic acid, di-C8-10-branched alkyl esters, C9-rich

CAS No: 68515-48-0

Categories: Catalyst and Auxiliary > Anticaking

The empirical formula of diisononyl phthalate (DINP) is C26H42O4. The structural formula of DINP varies because the iso-alcohols used in the manufacture contain several isomers. DINP is a clear, colorless to light yellow liquid. DINP is insoluble in water, but it is soluble in organic solvents.More

Acenaphthylene

CAS No: 208-96-8

Formula: C12H8

Categories: Catalyst and Auxiliary > Fluorescent Brightener

Acenaphthylene is a polycyclic aromatic hydrocarbon (PAH) with three aromatic rings. It is used to manufacture plastics. Intermediate for dyes, soaps, pigments, pharmaceuticals, insec-ticide, fungicide, herbicide, and plant growth hormones. Intermediate for naphthalic acids, naphthalic anhydride (intermediate for pigments), and acenaphthylene (intermediate for res-ins). The largest emissions of PAH result from incomplete combustion of organic materials during industMore

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2-(2′-Hydroxy-3′5-di-tert-butylphenyl) benzotriazole

CAS No: 3846-71-7

Formula: C20H25N3O

Categories: Catalyst and Auxiliary > UV Absorbers

UV-320 is an efficient light stabilizer, widely used in plastics and other organic materials, including unsaturated polyester, PVC, PVC plasticizing, etc., in polyurethane, polyamide, synthetic fibers, especially poly In the application of grease and epoxy resin. Used in plastics and other organic materials, such as unsaturated polyester, PVC, PVC plasticizing, etc.More

2,5-Thiophenedicarboxylic acid

CAS No: 4282-31-9

Formula: C6H4O4S

Categories: Catalyst and Auxiliary > Fluorescent Brightener

white to light yellow crystal powderMore

Frequently Asked Questions

How to choose the right catalyst for your application?

When selecting a catalyst, it is important to consider the type of reaction, operating temperature, pressure, solvents involved, and desired selectivity. Other key factors include catalyst lifetime, regeneration ability, and compatibility with your process. On ECHEMI, you can browse a wide range of catalyst and auxiliary products and compare specifications from multiple global suppliers to find the best option for your needs.

What is a catalyst?

Synonyms for catalyst include accelerator, promoter, stimulant, etc. A catalyst is a substance that speeds up a chemical reaction without undergoing any permanent changes. According to the catalyst definition, it doesn't alter the thermodynamics or the catalyst meaning of the reaction, but it lowers the activation energy required for the reaction to occur. Basically, a catalyst facilitates the reaction process and increases the conversion rate without being consumed in the reaction itself. It may exist in a variety of forms, including enzymes, metals, or complex compounds.

How does a catalyst work?

The function of a catalyst is to provide an alternative pathway for a chemical reaction to take place. It reduces the activation energy required for the reaction to begin, thus speeding up the rate of the reaction. The catalyst apex is the point at which the catalyst's effect on the reaction reaches maximum efficiency. It diminishes existing chemical bonds or establishes intermediary structures, so simplifying the reaction process, consequently expediting the production of substances. This mechanism, often utilized by catalyst companies, leads to accelerated product formation.

Are enzymes catalysts?

Yes, according to the catalyst definition, enzymes are biological catalysts. Enzymes, considered protein-based catalyst synonym, facilitate biochemical reactions within living organisms. Within defined temperature and pH parameters, enzymes function as exceedingly efficient catalysts, diminishing the activation energy necessary for reactions to occur. These auxiliaries, when integrated into biological systems, demonstrate specificity and selectivity in catalyzing particular reactions, rendering them pivotal as key catalysts across diverse biological processes.

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