 Potassium hydroxide good for developing PCBs?
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guich
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Registered Member #1269
Joined: Sat Jan 26 2008, 06:22PM
Location:
Posts: 9
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I don´t think you´ll need less KOH for developing PCBs, you even ned more because the fact it is a stronger base than NaOH will just make the reaction faster but i think it doesn´t work catalytic so you need stöchiometrisch masses and because K+ is heavier than Na+ you need on my opinion more KOH than NaOH
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Weston
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Registered Member #1316
Joined: Thu Feb 14 2008, 03:35AM
Location: Cambridge, MA
Posts: 365
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aonomus wrote ...
If you really need something to neutralize your solution, take some sodium bicarbonate from the supermarket, heat it at a few hundred degrees for a few hours to dehydrate and force it to sodium carbonate (more neutralizing power) and slowly add it (it will offgas CO2, don't let it bubble out of control). Once you have fully neutralized the solution, you can evaporate water to get Copper carbonate, then heat it much more strongly to get rid of CO2 to give the oxide.
Or you could just get sodium carbonate from a pool store (dry ph up)
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