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As in, a highly pressurized gas canister? In a container that is presumably 100% impervious to HF corrosion, yet somehow also made out of a material that can wi
by omar_a1 7y ago
As in, a highly pressurized gas canister? In a container that is presumably 100% impervious to HF corrosion, yet somehow also made out of a material that can withstand those pressures?
How is that safer than neutral-pressure, aqueous HF? I'm perfectly comfortable with bottled HF, to the point that I literally handled it in the dark (light-sensitive samples), but I'd never set foot in the same room as a pressurized HF gas canister. A spilled HF bottle is a major incident, but ultimately straight forward to contain, whereas an HF canister leak would kill off an entire lab.
I've done enough manifold setups and worked with enough gas cylinders to understand that they can leak in all kinds of ways, even with a wealth of experience. As I said initially: you are definitely not paranoid enough about this setup.
- ovi256 7y agoThis also begs the question of whom exactly has an unobtainium pump that can withstand HF to put it into a cylinder.
- dnautics 7y agoI'm just going to say that your ignorance about HF is exactly my point. 100% HF is obtainable commercially in labs and only requires shipping precautions on the order of what you would expect for toxic volatiles.
- Karunamon 7y agoDerek covers this in one of his articles. [1] >It’s sold compressed in metal cylinders, like other gases, but it needs some care in packaging. The stuff is so corrosive that special alloys need to be used, usually ones high in nickel. If you stick an ordinary gas regulator on top of an HF cylinder, you’re in for trouble, and the complete destruction of the regulator is the least of your worries. >HF has actually been used right out of the cylinder for a long time in Merrifield peptide synthesizers. [1]: https://blogs.sciencemag.org/pipeline/archives/2004/03/03/things_i_wont_touch_1 https://blogs.sciencemag.org/pipeline/archives/2004/03/03/th...