I need to clean a bunch of brass plumbing fixtures' internal bores of the
greenish white (mostly green) corrosion.
There are passageways I can't get sandpaper and wire brushes into.
What solution would you use?
Googling I discount the lemon juice and baking soda ideas as too weak (fine
for jewelry though).
I think they're copper sulfates or maybe copper oxides or maybe even copper
carbonates, each of which may react differently to acids and ammonia.
Looking for industrial strength solutions I see people advise vinegar
(which seems to weak to me) or maybe even muriatic acid (which seems too
strong), or maybe even ammonia.
Which do you use?
On Sat, 6 Aug 2016 20:00:53 -0100, Horace Algier wrote:
I took three brass fixtures heavy with the greenish white corrosion and
dumped them in three different solutions with three different instantaneous
1. The household vinegar has been acting for about a half hour, and all I
see happening is that the green corrosion is turning slightly blackish, so
I can't tell if it's working yet.
2. The household ammonia has been acting for the same time, where the
ammonia is turning blue, so I guess it's working.
3. The muriatic acid bubbled instantly a bright frothy yellow color, so
"something" happened really quickly. I only let it sit for ten or twenty
seconds, as the reaction was far too great for me to control before I
rinsed it off with the hose.
Do these different chemical reactions to the same stuff tell the chemists
out there anything about whether I have a copper chloride, a copper
sulfate, or a copper oxide that I am trying to get rid of?
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