What's the Applications of Intermediates Ethylenediamine?

October 21,2021

The intermediates ethylenediamine is a new type of substance, which is now widely used in all walks of life and has many advantages. So, how much do you know about it?


Ethylenediamine, abbreviated as EDA, with the chemical formula C2H8N2, is a typical fatty diamine. It is a colorless or slightly yellow oily or water-like transparent liquid. Ethylenediamine can produce smoke in the air and has an odor similar to ammonia. It also has the advantage of hygroscopicity. Ethylenediamine is an alkaline substance, easily soluble in water and ethanol, slightly soluble in ether, and insoluble in benzene unless it is absolutely dry, and can form an azeotropic mixture with water, n-butanol and toluene. It is flammable when exposed to heat, open flames, and oxidants, with moderate burning risk. In addition, ethylenediamine can be autoclaved or filter sterilized. 


high quality Intermediates Ethylenediamine


What the applications of intermediates ethylenediamine?


🔷Polymer resin


It can be used as a curing agent for epoxy resin. The commonly used fatty diamine is a general-purpose low-temperature curing agent. As a curing agent for epoxy coatings, it can significantly improve the performance of coatings. However, this type of curing agent is generally more toxic, and its formulated epoxy system has a large heat release, a short service life, and the cured product is brittle and hard. With epoxy resin as the matrix, ethylenediamine as the curing agent, acetone as the diluent, and quartz as the filler, it can be formulated into an ideal universal cementing material, which has the advantages of firm bonding, high temperature resistance, oil resistance, water resistance, acid and alkali resistance, low temperature resistance, anti-aging and high insulation. It can be widely used in the repair of motorcycles.


🔷Printing and dyeing industry


It can be made into finishing agent, fixing agent, fiber surface active agent. For example, treating wool with ethylenediamine can break the disulfide bonds in the wool, making the wool more sparse and soft, making it easier for the dye to diffuse into the fiber; at the same time, the wool can form aminoalanine, which increases the dyeing; In addition, ethylenediamine can also change the surface activity of wool and promote the absorption of dyes by wool. Someone has studied the process of pretreating wool with ethylenediamine and the performance of the pretreated wool. The result found that pretreatment of wool with ethylenediamine reduces the temperature of wool dyeing, shortens the dyeing time, and improves the quality of the product as well as saves energy.


🔷Oil additives


The reactant of ethylenediamine and sulfur can improve the thermal oxidation stability of lubricating oil of zinc diisopropyl dithiophosphate. The fatty acid amine salt of ethylenediamine or polyurea compound can also be used as thickener and oil extreme pressure agent of lubricating oil. Ethylenediamine also has special industrial applications in fuel oil. For example, the reaction product of ethylenediamine and chlorinated polyisobutylene can be used as a gasoline detergent. These products can be neutralized with carboxylic acid to improve the rust resistance of gasoline. The alkylation and acrylate products of ethylenediamine can be used as diesel detergents and anti-coking additives, and the composition containing ethylenediamine can be used as diesel cetane number improvers.


🔷Electroplating industry


The application of ethylenediamine in the electroplating process mainly includes electroplating copper, electroplating palladium, electroplating nickel, electroless nickel-boron plating, electroless copper plating, electroless palladium plating and so on. Adding ethylenediamine to the electroplating solution promotes fine crystallization of the plating layer, allowing the working current density and solution throwing ability to be increased accordingly. Because ethylenediamine can react with the metal to be plated, it improves the solubility of the electrode and enhances the buffering effect of the solution.


🔷Pesticide industry


Intermediates ethylenediamine is mainly used in the production of dithiocarbamate fungicides in pesticides, and the main varieties include mancozeb and zinc. This is a kind of preventive broad-spectrum contact fungicide. It was used as early as 1940 to prevent mildew, trachoma, scarring, rust and blight of fruits, vegetables, potatoes, and grains. After investigating the potential carcinogenic hazards of such products, in 1989 the US Environmental Protection Agency recommended that the use of most grains be restricted, of which 45 important grains need to be used under safety supervision. By July 1992, the California Federal Court announced the prohibition of use. Due to their wide use and good efficacy, these pesticides have become the main varieties of non-systemic protective fungicides, and they have been exported in large quantities abroad. Although foreign countries are not interested in the production of such products, they are the dominant and still developing products.


🔷Pharmaceutical production


Both ethylenediamine and high-carbon ethyleneamine can be used in the production of medicines, over 20 kinds, mainly aminophylline, metronidazole, coronadiazepine, etc., most of which are traditional medicines. For example, theophylline is added to anhydrous alcohol containing equimolar ethylenediamine under vigorous stirring, and after a few hours, the precipitate is filtered. Wash with cold ethanol and dry at low temperature to obtain aminophylline.


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