I don't think there is a "mainstream" requirement, although there may be some fringe military/nuclear stuff.
In most cases, baking it prior to use can ruin it. Many wire lubricants added by the manuyfacturer can flash off at temps as low as 250F....not to mention that you can run into trouble with a masonite spool, cardboard liner or even coated metal carrier.
When in doubt, and in the absence of customer/regulatory requirements, ask the manufacturer for information.