Cynthia,
This might be a little wordy but all I can say about that is sorry.
I read this post yesterday and have been thinking about it before I posted. I want to sound half intelligent.
I am not a chemist but have worked with a lot of real nasty chemicals. The majority of my disability is caused by chemicals. That is another story.
I think the problem you are running into is the document you linked is really poorly written. The intent is as clear as mud. I think a chemist would even have a hard time understanding what the author was stating.
I found that even if you get something that has the same name it can be different. I could get two cans of trichloroethylene (nasty stuff). Both cans would come with a MSDS (material safety data sheet). That sheet has a bunch of information on it about the chemical make up, safety precautions, reactions to other chemicals, symptoms of over exposure, blah, blah, blah
. The chemical make up of both cans could be different even tho they have the same nomenclature. It depended on the manufacturer. If I had to use them with another chemical to treat a surface for cleaning applying an adhesive I would have to read the sheets on the chemicals to see if they would react to each other and if they would, the chemicals that would have an adverse reaction to if mixed and HOW they would react to each other. If they were mixed wet they might have an explosive reaction, but if one chemical was applied and allowed to dry could I use the other chemical without an adverse reaction?
I would start with a MSDS for the specific chemicals made by a specific manufacturer. For instance I would look up the MSDS for the tung oil and the MSDS for the thinner you were going to use. This doesn't even come close to answering your question but I hope it can give you a place to start. The cure time should also be on the label for the specific brand of that tung oil. Here is an example of the Tung Oil that Rockler sells.
http://www.rockler.com/tech/RTD20000304AA.pdf
If you need help finding the MSDS or reading it holler. I had a book 4 inches thick just for my one man shop. If you have trouble sleeping these are great to have on your night stand.
Good luck