As a comparison, various types of insulation are rated for 60/90 minutes at 1000 degrees Celsius, while some types of brick are rated for 180 minutes. If this material can't sustain similar temperatures, it's unlikely it will be used in construction.
There are a bunch of standards for material fire classification, which may differ from country to country, but they're not really available to read online for free most of the time. You can do some googling around A1 fire classes, EI fire rating and so on.
A useful thing to know is that a house fire revolves around 800 degrees Celsius typically, so you should expect various materials that have a fire resistance rating to take more than that for a sustained period.
