What is Diethyl azodicarboxylate?

Identification

Product Name:    Diethyl azodicarboxylate    

Synonyms:    Diazenedicarboxylic acid, diethyl ester;Diethoxycarbonyldiazene;Diethyl (E)-1,2-diazenedicarboxylate;Diethyl diazodicarboxylate;dlethylazodicarboxylate;Ethyl azodicarboxylate;Formic acid, azodi-, diethyl ester;DIETHYL AZODIFORMATE    

CAS:    1972-28-7    

MF:    C6H10N2O4    

MW:    174.15    

EINECS:    217-821-7

Structure  

Properties

Melting point     6°C    

Boiling point     106°C (13 mmHg)    

Density     1.106    

Refractive index     n20/D 1.47   

Fp     85°C

Storage temp.     2-8°C

Solubility     Miscible with dichloromethane, diethyl ether and toluene.    

Sensitive     Air Sensitive

Application

Diethyl azodicarboxylate is a liquid blowing agent; a pharmaceutical intermediat. Diethyl azodicarboxylate is also used for vinyl resin liquid foaming agent and be used to make light color vinyl foamed plastics. Have uniform microporous structure, with the recipe and processing conditions are different, can get shut holes or the openings foam body. Also used as medicine intermediates, organic synthetic reagent, etc.

Purification Methods

Dissolve DEAD in toluene, wash it with 10% NaHCO3 till neutral (may require several washes if too much hydrolysis had occurred: check IR for OH bands), then wash with H2O (2x), dry over Na2SO4, filter, evaporate the toluene and distil it through a short Vigreux column (p 11) at as high a vacuum as possible. The main portion boils at 107-111o/15mm. Since it is likely to explode, use an oil bath for heating the still and all operations should be carried -out behind an adequate shield.