Potassium dichromate (K2Cr2O7) is a very strong oxidant and hence it would make sense that it using it would make wood appear aged, as well-aged wood is probably well-oxidized wood due to its long exposure to air. A research chemist friend of mine has used this in the lab on a number of occasions. It is highly toxic by ingestion, inhalation and skin absorption. It is also a teratogen, mutagen, and carcinogen. Great care should be used when handling it (he always use gloves and safety glasses). He is a woodworker and yet says using this stuff on furniture is unthinkable. Here is the url to its MSDS: http://www.sigmaaldrich.com/MSDS/MSDS/DisplayMSDSPage.do?country=US&language=en&productNumber=207802&brand=SIAL&PageToGoToURL=http%3A%2F%2Fwww.sigmaaldrich.com%2Fcatalog%2Fproduct%2Fsial%2F207802%3Flang%3Den I imagine this is still dangerous after it is dry. Please take great care.

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