Trisodium phosphate dodecahydrate is the colorless or white crystals and can be dissolved in water and aqueous solution of it is strongly alkaline. It is insoluble in ethanol and carbon disulfide.
Trisodium phosphate dodecahydrate is also known as trisodium phosphate, sodium orthophosphate. It is colorless crystal. The relative density is 1.62. Melting point is 73.4℃. It is easily weathered. When heated to 100℃, it loses crystal water to from Anhydrous.