What types of metals and plastics do not corrode in the presence of anhydrous hydrogen fluoride liquid or gas?
Answer:
Hydrogen fluoride is a colorless, fuming liquid or gas (depending on the temperature) with a strong, irritating odor. The air odor threshold for hydrogen fluoride is 0.042 part per million (ppm) parts of air.
Incompatibilities: Contact between hydrogen fluoride and metals, concrete, glass, strong bases, sodium hydroxide, potassium hydroxide, and ceramics may result in reactions.
Store in containers composed of non-corrosive materials, such as lead and wax. The corrosive action on metals can result in the formation of hydrogen gas.
Look for things that are low on the activity series like nickel, nickel alloys, gold, platinum, mercury, lead, that sort of thing. If you are thinking of doing a reaction in HF, then you probably want to consider alloys carefully such as Hastelloy.
Polyethylene and teflon are generally impervious to HF but even polyethylene can have problems if F radicals are formed (for example if you are doing photolyses).
Why'd you down me? I didn't just regurgitate some crap anyone can look up on the web.
polyethylene or polypropylene
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