Your chocolate's maximum temperature depends on its type and which step in the process you are on. For example, dark chocolate should be melted between 120 and 130F (50C and 55C), while milk and white chocolate should melt at around 105-115F (40-45C).When you heat chocolate, the cocoa butter crystals melt and the chocolate becomes fluid, but if you get the chocolate too hot, it can separate into burned, blackened cocoa particles and pale golden liquid.