To diverge only slightly and at the risk of inflaming a conflagration, may I propose this answer to a different aspect of the candle question:
Can a higher melting point affect how long a candle burns?
When the candle is burned, the wax goes through 3 phases. Solid to liquid to gas. The flame comes from the wax in its gaseous state. But the melting point pertains to the solid to liquid phase change. That phase change happens because the flame radiates heat down to the surface of the candle. The melting point is a factor because the higher the melting point, the smaller the pool of melted wax that is available to be drawn into the wick. A smaller pool of liquid wax means that the edges of candle don't melt as quickly and the bowl will be deeper, AND that the flame will be smaller. That's why a higher melting point wax makes a candle that burns longer - all other factors being equal.