Heh, I work in the computer chip industry and the ones PE listed are the nicer ones.
Originally Posted by Photo Engineer
Things come to mind are hydrofluoric acid, and the best one is TMAH. It is considered a safer alternative than other chemicals, but a small spill on the skin dissolves it instantly and causes serious burns. But that's nothing! It gets quickly absorbed into the blood stream and causes permanent and irreversible damage to the nervous system and death. It is used by the barrelfulls to make camera sensors and chips. Compared to that photographic chemicals are totally benign, and most of them are used as food additives anyway...
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