Owner of Jones Mineral Cabinet, Geology and Paleontology Supervisor, interested in Earth and Planetary sciences. #1. Clastic or Detrital Sedimentary Rocks The class(t)ic route begins with the weathering and erosion of sedimentary, igneous, or metamorphic rocks.
A flame retardant is a chemical substance that is added to materials during their manufacturing process in order to both reduce the likelihood of the finished product catching fire and slow down combustion. Source: GreenFacts.
Flame Resistant Materials. INTRODUCTION. Some of the most effective flame retardants are compounds that contain both phosphorus and nitrogen. Polyphosphazenes are a unique class of polymers with a backbone composed of alternating phosphorus and nitrogen atoms. The versatility of this polymer system is due mainly to the ease of modification of the precursor polymer poly(dichlorophosphazene).