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Adipic Acid Dihydrazide (ADH) is a crosslinker of waterborne acryl emulsions. It is also useful as an epoxy resin hardener and a formaldehyde scavenger. ADH（Adipic acid dihydrazide）is an organic compound with the chemical formula C₆H₁₀N₂O₂, and it belongs to the class of hydrazides. It is primarily used in the preparation of polyurethanes, polymeric materials, and in other industrial applications due to its ability to react with various functional groups to form crosslinked networks.
CAS No :1071-93-8
ENCS : (2)-865
TSCA :1071-93-8
EINECS :213-999-5
The structure of Adipic Acid Dihydrazide consists of:
Adipic acid (a six-carbon dicarboxylic acid, C₆H₁₀O₄) that has been modified by attaching two hydrazine groups (-NH-NH₂) to the carboxyl groups of the acid.
The chemical structure of ADH can be represented as:
HOOC-(CH₂)₄-CO-NH-NH₂
It is a dihydrazide, meaning that each of the two carboxyl groups (–COOH) of adipic acid is bound to one hydrazine group (–NH–NH₂).
The resulting structure consists of a central adipic acid backbone, with hydrazine functional groups at each end, making ADH an important reagent in various chemical reactions.
The synthesis of ADH typically involves the reaction of adipic acid with hydrazine hydrate. The steps for synthesis can be outlined as follows:
Reaction of Adipic Acid with Hydrazine: Adipic acid is reacted with an excess of hydrazine hydrate (NH₂-NH₂·H₂O) in a suitable solvent (like ethanol or water) under controlled conditions (e.g., elevated temperature).
Formation of Dihydrazide: The hydrazine groups attach to the two carboxyl groups of adipic acid, forming Adipic Acid Dihydrazide.
Purification: The product is then purified, typically by recrystallization, to remove unreacted reagents and obtain pure ADH.
The reaction can be represented as:
HOOC-(CH₂)₄-COOH + 2 NH₂-NH₂ → HOOC-(CH₂)₄-CO-NH-NH₂ (ADH)
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Adipic Acid Dihydrazide is used in a range of industrial applications due to its unique chemical properties:
ADH is used as a curing agent or crosslinking agent in the production of polyurethane materials. The hydrazide groups can react with isocyanates to form stable crosslinks, which enhance the strength, flexibility, and durability of polyurethane-based products. ADH is particularly useful in applications requiring thermosetting polyurethanes, such as in coatings, adhesives, and sealants.
In addition to polyurethanes, ADH can be employed in the preparation of other polymeric networks. Its dihydrazide structure allows it to participate in various reactions, such as with aldehydes, ketones, or carboxylic acids, to form highly crosslinked polymers. This property is used in the preparation of polymeric hydrogels and other specialty materials.
The hydrazide group (-NH-NH₂) in ADH is highly reactive toward carbonyl groups (such as aldehydes and ketones), which allows ADH to be used in the synthesis of various hydrazone derivatives. Hydrazones are important intermediates in organic synthesis and can be used in pharmaceutical chemistry and material science.
ADH is sometimes explored in the pharmaceutical and biomedical fields, where its reactivity with carbonyl groups makes it a useful building block in the design of certain drug delivery systems or biocompatible materials. ADH-based materials have been studied for use in biodegradable hydrogels, which can be utilized in controlled drug release or tissue engineering applications.
ADH can serve as a crosslinking agent for the production of hydrogels, which are used in various medical applications such as wound dressings, contact lenses, and controlled-release drug systems. The formation of a three-dimensional network via hydrazone or hydrazide linkages enhances the stability and performance of the hydrogel.
ADH is also used in the preparation of polyesters and polyamides through polycondensation reactions. The hydrazide group of ADH can react with diacids or diols, facilitating the formation of polymer chains. This can be used in the production of specialty polyamides or polyesters for engineering plastics and coatings.
In some cases, ADH is used in agricultural chemicals, specifically in the preparation of formulations for pesticides or herbicides that require enhanced chemical stability or controlled release. Its ability to form crosslinked networks can improve the performance and delivery of active ingredients in agricultural products.
20kg carton box
Our well-equipped facilities and exceptional top quality handle throughout all stages of production enables us to guarantee total client fulfillment for Manufacturer of Adipic Acid Dihydrazide (ADH), The crew of our corporation together with the use of cutting-edge technologies delivers impeccable high quality merchandise supremely adored and appreciated by our shoppers all over the world.
Manufacturer of Adipic Dihydrazide and Dihydrazide, Our production have been exported to more than 30 countries and regions as first hand source with lowest price. We sincerely welcome customers from both at home and abroad to come to negotiate business with us.