I'm sort of a model rocket enthusiast, but the most common fuel for model rockets, Rocket Candy, requires Potassium Nitrate as an oxidizer to oxidize Powdered Sugar. Potassium Nitrate is not necessarily expensive, but it's not very common, and the only process I found to make it at home took almost a year to produce product. I'm wondering if anyone has found another suitable oxidizer for the sugar, preferably not a nitrate unless it is one that is common, as I am not allowed to store nitric acid in my apartment to synthesize the nitrate. As a side note, I happen to have a significant amount of ammonium sulfate, and I am also wondering if this might be a viable substitute. I know that sulfates aren't always as good of oxidizers as nitrates, but I also know that ammonium salts tend to be better oxidizers. If anyone has some idea as to a common household compound that would be a suitable replacement for Potassium Nitrate as a fuel oxidizer, or if Ammonium Sulfate is good at oxidation, I ask you to help me out here.
Thanks for your consideration! ~ mpprogram6771