Abstract: Flame resistant fabrics are provided that exhibit improved protection from molten metal spills, metal splatter, electric arc, and related thermal hazards illustratively including open flame and radiant heat. The flame resistant fabrics are made from a combination of cellulosic fibers and thermoplastic fibers, where the flame resistant fabric forms a char layer that does not become brittle when contacted by molten metal, metal splatter, electric arc, and related thermal hazards. By not becoming brittle the likelihood of break out of the fabric is minimized, thereby improving the level of protection to the user. As a result, the flame resistant fabric retains the desirable properties of fibers formed of organic materials in terms of comfort, weight, and durability.