Adipic acid dihydrazide (ADH) is a chemical used for
cross-linking water-based
emulsion
An emulsion is a mixture of two or more liquids that are normally immiscible (unmixable or unblendable) owing to liquid-liquid phase separation. Emulsions are part of a more general class of two-phase systems of matter called colloids. Althoug ...
s. It can also be used as a hardener for certain
epoxy
Epoxy is the family of basic components or cured end products of epoxy resins. Epoxy resins, also known as polyepoxides, are a class of reactive prepolymers and polymers which contain epoxide groups. The epoxide functional group is also coll ...
resins.
Adipic acid dihydrazide - Adipic dihydrazide - ADH
ADH is a symmetrical molecule with a C4 backbone and the reactive group is C=ONHNH2. Dihydrazides are made by the reaction of an organic acid with hydrazine
Hydrazine is an inorganic compound with the chemical formula . It is a simple pnictogen hydride, and is a colourless flammable liquid with an ammonia-like odour. Hydrazine is highly toxic unless handled in solution as, for example, hydrazine ...
. Other dihydrazides with different backbones are also common, including isophthalic dihydrazide (IDH) and sebacic dihydrazide (SDH).
References
External links
Preparation of Enzyme Conjugate through Adipic Acid Dihydrazide as Linker
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Technical Article About the Chemistry and Use of Dihydrazides in Thermosets, Including ADH
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Hydrazides