Lion850
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Keeping Ammonium fluoride solution in a glass bottle
I have 500g of ammonium fluoride NH4F powder that I use to make metal fluorides by double displacement. But I hate working with the powder it seems to
sublimate very quickly. Thus I want to keep some as a solution, probably 150g dissolved in 200ml water.
My question is, can I keep this solution over a long period of time in a glass thick wall reagents bottle? I read the ammonium fluoride solution will
etch glass, but I don’t know if this is something to be concerned about.
Advice will be appreciated, I know near nothing of fluorine compounds.
[Edited on 3-6-2020 by Lion850]
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DavidJR
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Why not just use a plastic bottle?
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Lion850
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I happen to have a few spare glass reagent bottles. But if necessary I’ll get a plastic one. I’m still interested to understand how long a glass
bottle will last.
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Sulaiman
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Earlier today I was browsing and came across something that could be ideal,
ptfe coated hdpe bottles https://www.lazada.com.my/products/ptfe-bottle-food-grade-wi...
probably available via ebay, amazon etc. - I've not looked
CAUTION : Hobby Chemist, not Professional or even Amateur
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Ubya
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https://www.youtube.com/watch?v=LRw5-WQERbM
there's a reason if it is used to etch glass, because it etches glass. use a plastic container
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DavidJR
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That's ammonium bifluoride, i.e. NH4F . HF
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Ubya
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yup bifluoride is the one commonly used to etch glass, but after checking again ammonium fluoride also is corrosive against glass, slower than the
bifluoride, but still corrosive.
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feel free to correct my grammar, or any mistakes i make
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