It is white or colorless rhombic crystalline or prismatic crystal. Itâ��s easily soluble in water, but insoluble in ethanol. The relative density is 1.63 and melting point is 34.6�°C. If heated to 180�°C, it may lose crystal water, convert to anhydrous. Application of TSPP Tetra Sodium Pyrophosphate is used as a buffering agent, an emulsifier, a dispersing agent, and a thickening agent, and is often used as a food additive. Common foods containing tetrasodium pyrophosphate include chicken nuggets, marshmallows, pudding, crab meat, imitation crab, canned tuna, and soy-based meat alternatives and cat foods and cat treats where it is used as a palatability enhancer. Uses of TSPP In food industry, it is used as leavening agent, dough conditioner, buffer, nutritional supplement, emulsifier, and stabilizer, e.g. it is used as quality improve for flour, cake, biscuit and bakery.