Ultimately, we can't tell you exactly how long you can leave butter out. We have no problem with leaving butter out to soften as long as it is well-covered. It usually doesn't take us more than a couple days to go through a stick anyway! We've never had rancid butter in that time.
For complete instructions, see my weekly column. Note: The vinyl melts in just a few minutes and is warm to the touch when you pull it from the 200-degree oven (don't use a hotter oven or the vinyl will start releasing toxins). You can form it by hand immediately, but use leather gloves if you're nervous. All beginners in Record Upcycling should try a bowl.
Best Answer: Assuming that you mean table sugar (sucrose), then at room temperature and without any catalyst, there is no reaction. However if you elevate and hold the temperature of the aqueous solution at 50 to 60 Â°C (especially in the presence of a suitable catalyst, like mineral acid) the sucrose dimer will split into glucose and fructose.