deams
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synthesis of azodicarbonamide
Does anyone have a suggestions as to which method is the most efficient (yield) to produce Azodicarbonamide?
Thanks
[Edited on 30-11-2003 by deams]
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unionised
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The commercial prep. is the reaction of hydrazine with urea then oxidation with (IIRC) chlorine.
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Hermes_Trismegistus
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addendum
Urea is commonly available, chlorine easily liberated from chlorides, chlorites and chlorates.
Hydrazine synth is discussed (ad nauseum) in another thread.
Arguing on the internet is like running in the special olympics; even if you win: you\'re still retarded.
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KABOOOM(pyrojustforfun)
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from industrial inorganic chemistry:
2H<sub>2</sub>NCONH<sub>2</sub> + N<sub>2</sub>H<sub>4</sub> +
H<sub>2</sub>SO<sub>4</sub> <s> ></s>
H<sub>2</sub>NCONHNHCONH<sub>2</sub> + (NH<sub>4</sub><sub>2</sub>SO<sub>4</sub>
H<sub>2</sub>NCONHNHCONH<sub>2</sub> + Cl<sub>2</sub> <s> ></s>
H<sub>2</sub>NCON=NCONH<sub>2</sub> + 2HCl
it doesn't give any further information. I think in the first reaction semicarbazide forms as intermediate which then reacts with another urea
molecule to form HDC. if I remember correctly for the oxidation step H<sub>2</sub>O<sub>2</sub> can be used.
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