This posting is to gauge the interest of vendors who provide chemicals to McAlester Army Ammuntion Plant (MCAAP) and seeing interest in combining chemical buys together. Some of the chemicals that MCA... This posting is to gauge the interest of vendors who provide chemicals to McAlester Army Ammuntion Plant (MCAAP) and seeing interest in combining chemical buys together. Some of the chemicals that MCAAP buys are: Polybutadiene (R45), Triphenyl Bismuth (TPB), Aluminum Powder, and Ammonium Pechlorate. Please provide a response if you are able to provide some/all of these chemicals.