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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 313 trusted manufacturers and 306 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

Dibutyl itaconate

CAS No: 2155-60-4

Formula: C13H22O4

Categories: Catalyst and Auxiliary > Plastic Rubber Chemicals

2-Hydroxy-4-dodecyloxybenzophenone

CAS No: 2985-59-3

Formula: C25H34O3

Categories: Catalyst and Auxiliary > UV Absorbers

Manila elemi resin

CAS No: 9000-75-3

Categories: Catalyst and Auxiliary > Polymer

The tree grows wild or cultivated in the Philippines. Elemi, a resin, is the pathological exudate flowing from incisions made on the trunk bark. The largest resin production coincides with the appearance of the leaves at the beginning of the rainy season. The gum-resin outflows as a soft, yellowish-white mass that hardens to a wax-like consistency on exposure to air. The part used is the resinous exudate. Elemi has a characteristic green, fresh, lemon-like, agreeable, balsamic odor.More

Thiosulfuric acid (H2S2O3), SS,SS′-1,6-hexanediyl ester, sodium salt (1:2)

CAS No: 5719-73-3

Formula: C6H14O6S4.2Na

Categories: Catalyst and Auxiliary > Antioxidants

White powderMore

C.I. Fluorescent Brightener 28

CAS No: 4193-55-9

Formula: C40H44N12O10S2.2Na

Categories: Catalyst and Auxiliary > Fluorescent Brightener

Can improve the whiteness and gloss of the substance, mainly used in textile, paper, plastic and synthetic detergent industriesMore

619 Catalyst and Auxiliary Suppliers

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Phosphorous acid, bis(2-ethylhexyl) phenyl ester

CAS No: 3164-60-1

Formula: C22H39O3P

Categories: Catalyst and Auxiliary > Antioxidants

This product can be used as an auxiliary antioxidant, has a good anti-discoloration effect, can increase oxidation resistance and light stability. It has the function of chelating agent in PVC. Low toxicity, can be used for plastic medical device products.More

Asymmetric Synthesis BINAPs Chemical Synthesis

CAS No: 127593-28-6

Formula: C44H32Cl2P2Pd

Categories: Catalyst and Auxiliary > Polymer

RAC-2-(DI-T-BUTYLPHOSPHINO)-1,1'-BINAPHTHYL

CAS No: 255836-67-0

Formula: C28H31P

Categories: Catalyst and Auxiliary > Precious Metal Catalysts

APhos Pd G3

CAS No: 1820817-64-8

Formula: C29H42N2O3PPdS-

Categories: Catalyst and Auxiliary > Precious Metal Catalysts

Ethylenediamine-ethylenimine copolymer

CAS No: 25987-06-8

Formula: (C2H8N2.C2H5N)x

Categories: Catalyst and Auxiliary > Polymer

Polyethyleneimines (PEIs) are highly basic and positively charged aliphatic polymers, containing primary, secondary and tertiary amino groups in a 1:2:1 ratio. Every third atom of the polymeric backbone is therefore an amino nitrogen that may undergo protonation. As the polymer contains repeating units of ethylamine, PEIs are also highly watersoluble. PEIs are available in both linear and branched forms with molecular weights ranging from 700 Da to 1000 kDa.
For a long time, PEI has been More

Bis(2-butoxyethyl) phthalate

CAS No: 117-83-9

Formula: C20H30O6

Categories: Catalyst and Auxiliary > Plastic Rubber Chemicals

The empirical formula of dibutoxyethyl phthalate (DBEP) is C20H30O6. It is a colorless liquid, with a density of 1.063.It is soluble in organic solvents and fairly insoluble in water.ChEBI: A phthalate ester obtained by the formal condensation of both the carboxy groups of phthalic acid with two molecules of 2-butoxyethanol.More

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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