@deprecated_ii hmm, I was told you have to mix a HV spark gap with flammable gases, and hit the correct ratios and PVT windows.

Now it could be I have the chemical name mixed up with something else, but if I am recalling the name correctly, then a number of years ago I had someone telling me about working with an exiting plant, that suffered an explosion when trying to implement an acetylene line (and had hired that person as a consultant which led to a successful implementation).