Synthesis and toxicity of hydrazine

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Discussion Overview

The discussion revolves around the synthesis and toxicity of hydrazine (N2H4), focusing on potential methods for synthesis, safety concerns, and its application as rocket fuel. Participants explore theoretical aspects of synthesis while addressing the associated risks and legal implications.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested
  • Meta-discussion

Main Points Raised

  • One participant inquires about synthesizing hydrazine by mixing concentrated ammonia, sodium hypochlorite, and gelatin, questioning the necessity of high temperatures and pressures for yield.
  • Another participant notes that gelatin would react quickly with chloramines, asking if this synthesis method is published.
  • A different viewpoint suggests purchasing hydrazine instead of synthesizing it, highlighting its toxicity and explosive hazard.
  • A reminder is issued regarding the dangers of synthesizing rocket fuel and the forum's guidelines against detailed synthesis instructions.
  • One participant asserts that hydrazine is extremely dangerous, mentioning its use in binary explosives and its persistence as a hazardous material.
  • Concerns are raised about the legal implications of possessing hydrazine in the USA, regardless of intended use.

Areas of Agreement / Disagreement

Participants express varying opinions on the synthesis of hydrazine, with some advocating for caution and others questioning the feasibility of the proposed method. There is no consensus on the safety or legality of synthesizing hydrazine.

Contextual Notes

Limitations include the lack of detailed synthesis instructions due to forum guidelines, and the discussion does not resolve the uncertainties regarding the synthesis method or the legal ramifications of possessing hydrazine.

Who May Find This Useful

This discussion may be of interest to individuals exploring chemical synthesis, safety in handling hazardous materials, and the legal aspects of chemical possession.

Chestosterone
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I have a few questions about the synthesis and toxicity of hydrazine (N2H4). First of all, is it possible to synthesize hydrazine under a fume hood by mixing concentrated ammonia, sodium hypochlorite (bleach), and a gellatinous material (gelatin?)? I have read that high temperatures and high pressures could be necessary, but are those criteria only for high yield syntheses? Also, will the gelatin in any way counteract the acrid fumes of NH2Cl and other chloroamines, and ultimately hydrazine? and will the product be safe to put into a rocket as fuel? Any cautions on the toxicity of hydrazine will also be taken into consideration. Thanks
 
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Gelatin would react quite quickly with chloramines. Is this a published method?
 
Just buy it :smile:. Seriously though, why go through all of the trouble of making it if aldrich will send you a bottle of the stuff in 1 day? Hydrazine is pretty toxic and is an explosive hazard.
 
Chestosterone said:
I have a few questions about the synthesis and toxicity of hydrazine (N2H4). First of all, is it possible to synthesize hydrazine under a fume hood by mixing concentrated ammonia, sodium hypochlorite (bleach), and a gellatinous material (gelatin?)? I have read that high temperatures and high pressures could be necessary, but are those criteria only for high yield syntheses? Also, will the gelatin in any way counteract the acrid fumes of NH2Cl and other chloroamines, and ultimately hydrazine? and will the product be safe to put into a rocket as fuel? Any cautions on the toxicity of hydrazine will also be taken into consideration. Thanks

Just a quick note to remind you that the synthesis of rocket fuel can be considered a dangerous activity, and we will not permit detailed synthesis instructions to be posted here on the PF. Please see the stickie post at the top of this Chemistry forum, addressing Dangerous Activities:

https://www.physicsforums.com/showthread.php?t=178906

I'll leave this thread open for now, but if it starts to go into too much detail, I'll consider a lock.
 
For what it's worth, I think this thread has already stepped beyond the bounds of our Guidelines, but I'll defer to C-tree's judgement on this.
 
The one thing I'd like to add here, and I can say with complete assurance; hydrazine is exquisitely dangerous stuff. That may be somewhat obvious from its use as rocket fuel, but what you may not know is that it is one half of a family of binary explosives... and those explosives are noted for their remarkable degree of persistency for a liquid explosive compound. Due to its low volatility, it can be dispersed in an area, be absorbed by the soil, and still retain its full explosive characteristics for a period of approximately 4 days.

Also, the reason given that these compounds are rarely used is that they have "mostly been superseded by cheaper and safer compounds, largely due to the expense and exceptionally poisonous nature of the hydrazine component." (emphasis added)

It's also worth noting that, in the USA, mere possesion of such a chemical could run afoul of the law quite easily, regardless of the intended use.