RE: Use of HCl
Greetings,Are there any special precautions when storing/using a small amount of 5-10% hydrochloric acid (for testing for carbonates)? Thanks,Kyle
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The plastic bottle it originally came from is the best container. As for usage, caution is always recommended regardless of concentration. But since you only need a tiny drop to test forcarbonates it's...
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Kyle, I put a small amount in a tiny eye dropper-type of bottle w/ lid, and put in my car's cupholder. It tarnished the coins in there, to my surprise. Maybe the lid wasn't tightened all the way, I'm...
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"Maybe the lid wasn't tightened all the way."Almost certainly not. Never keep aggressive chemicals in containers that are not supposed to hold them. The bottles in which acids are shipped have tightly...
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I've kept a small dropper bottle of HCl in my field vehicle for years without any issues in a bottle specifically designed to handle acids. If you don't have one of these, the vapors will come through...
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Properly stored, HCL has an infinite shelf life. It is not subject to any form of decomposition or ageing.
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After having a variety of acid dropper bottles leak and ultimately ruin clothing and leather field cases, the solution (no pun intended) that I found was to 1) use the smallest possible dropper bottle;...
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Be sure to label the bottle so that nobody tries to use it as eye drops!
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Plastic is permeable to HCl and that is why things near it will rust. The only way to prevent HCl from getting out is keeping it in a glass bottle with a neoprene stopper or special plastic cap like...
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Very true Reiner, I had a gallon bottle of 15% stored on a painted metal shelf for a few years. It ate the paint beneath it and nearby, and then started on the metal. I though it had been leaking or...
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Yes like Reiner said HCl goes through plastic bottles and causes extensive corrosion expecially if concentrated.Incidentally HF (not recommended to have it) not only does the same but also etches glass...
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Reiner and John have both made false generalizations.Some kinds of common plastic are permeable and/or attacked by HCl. Polyesters are a good example. However not all plastics are permeable and/or...
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I have a 1 gallon jug of 30% HCL (as it came from the store, never opened) and I keep it in a 5 gallon plastic pail with a lid.After not using it for 2 years (I keep it in my New England garage, can...
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Muriatic acid (impure HCl or hydrochloric acid) is often sold in the stores in certain plastic containers. They are not always suitable for long-term storage; I expect that they sell the stuff...
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To solve Calcite or Aragonite, acetic acid (vinegar) is strong enough. Gg
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I store and use my HCl outside, in all quantities. I've seen it corrode things, inside, unexpectedly, a number of times over the years.David KJ
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A lot of the corrosion problems from HCl fumes could be avoided or minimized by more dilution of the acid. For testing for calcite/aragonite there is no need for concentrated acid, even 5% will do just...
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AlfredoI use mine mostly for desolving calcite pockets, so I need it full strength.:-D
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Wayne, you don't need full strength, you just need p-a-t-i-e-n-c-e :)-D
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The hint of Alfred is important. Strength acid may result in ugly yellow layers because iron is mostly everywhere. For all who want to do that I recommend the following procedure: Put the specimen in...
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