The EPA document elaborates: “raditional ‘eyeball’ identification of malachite by its blue-green color is extremely unreliable, because almost all cupric hydroxysulfates, hydroxycarbonates, hydroxychlorides, and even fresh cupric hydroxide can be some shade of blue-green. Recall from above that most “malachite” isn’t actually pure malachite, it’s a mix of various copper carbonates & oxides.From this we can take away that if you leave malachite alone in a vagina you’ll get AT LEAST 9.12 x 10^-4 moles/L, or 5.8 ppm, of Cu++ at equilibrium. But this is probably the closest we’re going to get to data on how malachite behaves in vaginas anytime soon, folks. ![]() He’s got no acidity in there, and again the salinity and temperature are slightly off from the vaginal standard. That orange box is how many moles of dissolved Cu++ Scaife got from sticking malachite in some water that had 0.171 moles NaCl/L (body salinity is about 0.154 moles NaCl/L so this is slightly more salty than people) at 30☌. Scaife published some great data on this back in 1957.
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