![]() So we’d better assume it’s going to happen reasonably quickly, #for safety. In other words, the experiments that would tell us how fast malachite dissolves in various types of water just don’t exist because nobody’s ever needed to know before. 42) because end equilibrium points are all you need to run a city water system safely. One of the best sources on how malachite dissolves & precipitates in water– an EPA document on how to avoid too much Cu++ in municipal drinking water systems– helpfully says “The kinetic constraints on the formation of these solids in water systems are largely unexplored” (p. Unfortunately it looks like nobody really knows.An encounter with a stalactite would have to last years for enough Cu++ to leach out to cause problems. Anyway the key question now is “ how fast does the human vagina dissolve malachite?” Are we talking geological timescale, a Nazis-in-Indiana-Jones situation, or something in between? If the reaction kinetics of dissolution are very slow, then there’s nothing to worry about.Gonna to take a quick moment to point out that sex toys that dissolve when you use them are maybe not the best investment.I have no deeper explanation for why human females can dissolve rocks with our genitals.In other words, the human vagina dissolves malachite.As luck would have it, acidity, salinity, and warmth all make malachite dissolve faster. It’s also warmer than your average underground cave at 37☌ (or 98.5☏ in American meat units). A healthy human vagina has a pH of 3.8-4.5 and a salinity of about 0.9%. ![]() Malachite dissolves somewhat slowly in water– but vaginal secretions aren’t just any water.But it kills bacteria when it dissolves and releases Cu++. So bottom line, yes malachite is technically nontoxic to humans. ![]() It takes such a large dose to harm larger organisms that copper sprays are used a lot in organic agriculture (like Bordeaux mixture). Cu++ is GREAT at killing bacteria and fungi– so good at it that sprays with Cu++ get used a lot as a spray in agriculture to stop plant disease.
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