Not really, since you're gonna boil it until it dissolves. But I'm assuming the recipe says granulated sugar instead of, say, confectioner's sugar, because the

Not really, since you're gonna boil it until it dissolves. But I'm assuming the recipe says granulated sugar instead of, say, confectioner's sugar, because the latter often adds corn starch or potato starch to the sugar as an anti-caking agent, so you might not be getting the correct amount of actual sugar in the solution.