jpsmith123
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Hydrazine Sulfate As A reducing Agent For Electroless Plating
Does anyone know if hydrazine sulfate can replace the sodium hypophosphite or borohydride used as a reducing agent in electroless plating? Apparently
its use in this manner is mentioned in some patents, but there's not a lot of practical information on it.
Regards,
Joe
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unionised
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well, this site
http://66.102.9.104/search?q=cache:pMhyPEJzZr8J:boyles.sdsmt.edu/cumirror/cumirr.ppt+%22copper+mirror%22+hydrazine&hl=en
says you can plate copper using hydrazine as a reductant.
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jpsmith123
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Thanks for the interesting link.
Based on the little tidbits of information I've seen, it seems that hydrazine sulfate may also work.
Just in case it doesn't, though, I wonder what would be the best way to get a dilute aqueous hydrazine solution from the sulfate?
Regards,
Joe
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neutrino
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Add a strong base, e.g. NaOH.
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unionised
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BTW, you do know that hydrazine is volatile and a suspect carcinogen, don't you?
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jpsmith123
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In water or alcohol or some other solvent? What's the rest of the process?
The devil's in the details...what are they?
| Quote: | Originally posted by neutrino
Add a strong base, e.g. NaOH. |
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neutrino
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Something like this should happen:
N<sub>2</sub>H<sub>6</sub>SO<sub>4</sub> + 2 NaOH ->
N<sub>2</sub>H<sub>6</sub>(OH)<sub>2</sub> + Na<sub>2</sub>SO<sub>4</sub>
N<sub>2</sub>H<sub>6</sub>(OH)<sub>2</sub> -> N<sub>2</sub>H<sub>4</sub> + 2
H<sub>2</sub>O
The spectator ions should be ignorable, although you know more about plating than I do. If they do pose a problem, see Rosco's posts in the
hydrazine thread.
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ScienceSquirrel
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Cold dilute aqueous solutions of hydrazine should be relatively harmless though.
If he is making up the plating solution, doing the plating and then disposing of the solution safely he should be OK.
[Edited on 15-11-2011 by ScienceSquirrel]
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Jor
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I've done it by dissolving copper(II) acetate in water, add ammonia until all initially formed Cu(OH)2 dissolves, add hydrazine hydrate and heat on a
water bath.
http://amateurchemie.nl/viewtopic.php?f=20&t=404
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cyanureeves
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Jor does your method plate regular carbon steel ?or is this just for silver mirror type plating?
[Edited on 16-11-2011 by cyanureeves]
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Jor
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I don't know. You should try it.
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Random
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is there some alternative to hydrazine here?
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Random
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is there some alternative to hydrazine here?
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j_sum1
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I was thinking about creating a copper mirror. I have spotted a youtube video showing a method using hydrazine -- which is essentially the same as
the method above. https://www.youtube.com/watch?v=tkFOzFNODUE
However, I do not have access to hydrazine and synthesising it will be a new step for me. I could go there but wondered if alternatives to the
hydrazine exist.
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JJay
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Hydrazine is rather nasty - carcinogenic, explosive, low-boiling, and poisonous; I don't think playing with it in an amateur lab is a good idea.
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