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]DavidJR - 3-6-2020 at 01:33
Why not just use a plastic bottle?Lion850 - 3-6-2020 at 02:12
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. Sulaiman - 3-6-2020 at 03:14
there's a reason if it is used to etch glass, because it etches glass. use a plastic container
That's ammonium bifluoride, i.e. NH4F . HF
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.
