Also known as Sodium Pyrophosphate Tetrabasic Decahydrate and Tetrasodium Pyrophosphate, this chemical presents as white crystals. It is stable but incompatible with strong oxidizing agents. Sodium Pyrophosphate Decahydrate may be an irritant of the eyes, respiratory system and skin. While it is soluble in water, it is insoluble in alcohol and ammonia. Sodium Pyrophosphate Decahydrate is a buffering agent, emulsifier and laboratory reagent that should be stored at ambient temperatures.