2019 wholesale price Manufacturer of Adh Chemical Structure
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Adipic Acid Dihydrazide (ADH) Factory & Supplier
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
1. Molecular Structure of Adipic Acid Dihydrazide (ADH)
The structure of Adipic Acid Dihydrazide consists of:
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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.
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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.
2. Synthesis of Adipic Acid Dihydrazide
The synthesis of ADH typically involves the reaction of adipic acid with hydrazine hydrate. The steps for synthesis can be outlined as follows:
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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).
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Formation of Dihydrazide: The hydrazine groups attach to the two carboxyl groups of adipic acid, forming Adipic Acid Dihydrazide.
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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)
3. Properties of Adipic Acid Dihydrazide
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4. Applications of Adipic Acid Dihydrazide (ADH)
Adipic Acid Dihydrazide is used in a range of industrial applications due to its unique chemical properties:
4.1. Polyurethane Production
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.
4.2. Synthesis of Polymeric Materials
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.
4.3. Hydrazide-based Reactions
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.
4.4. Pharmaceutical and Biomedical Applications
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.
4.5. Crosslinking Agent in Hydrogels
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.
4.6. Synthesis of Polyesters and Polyamides
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.
4.7. Agriculture
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.
5. Packing
20kg carton box
The consumer gratification is our primary concentrate on. We uphold a consistent level of professionalism, top quality, credibility and repair for Adh Chemical Structure, We welcome new and old customers from all walks of life to contact us for future business relationships and mutual success!
2019 wholesale price Adh Chemical Structure, Our company sticks to the principle of “high quality, reasonable price and timely delivery”. We sincerely hope to establish good cooperative relationships with our new and old business partners from all parts of the world. We hope to work with you and serve you with our excellent products and services. Welcome to join us!