As an product of commerce TSP is frequently partially hydrated and may vary from anhydrous Na3PO4 to your dodecahydrate Na3PO4·12H2O. Most often it can be found in white powder variety. It can also be identified as trisodium orthophosphate or just sodium phosphate. Specific elemental properties span over the periodic table https://betht887jaq6.wikikali.com/user