Cementitious fireproofing as defined by UL refers to the manner in which the material is pumped. Cementitious fireproofing products (Portland/gypsum) are pumped like concrete in a slurry with air added at the nozzle to convey it onto the steel. It has absolutely nothing to do with product ingredients.
Southwest cementitious products provide long term durability, high bond strength, excellent air erosion and overall superior performance.
Blazeshield II fireproofing does not meet the definition of a cementitious product as defined by Underwriters Laboratories.