re: Johnson paste wax

If you google the product name and MSDS or even just SDS, you will get links for the Material Safety Data Sheet that will usually tell you of any ingredients that could be to some degree hazardous (which could be just flammable) and sometimes some of its other ingredients.  For example, the MSDS for Turtlewax Hard shell finish is here and shows that it does have some silicone in it as well as a clay, that may be (?) a polishing abrasive.  Not something you would want on your wood projects.  Note that you can find a copy of the Johnson's Paste Wax MSDS here.  It only shows that it contains parafin waxes and lists no carnauba or bee's wax but they may not list any non hazardous ingredients.  Surprisingly, the date on it is 2019.  I suppose that they may have to keep it updated until all stocks are depleted?  

The MSDS can be confusing especially if you are not a chemist, but you can google the ingredients to get more information about them or even just a more common name for it that you are familiar with.  Sometimes they just say something vague like petroleum distillates which I usually take to mean something like mineral spirits.  Another one is Stoddard solvent which if you google it appears to be mineral spirits.  You will also usually see a CAS# for some of the ingredients.  This can give more specific information for the exact chemical and sometimes a list of all of the names it may be listed as on labels.