Sodium polyacrylate is non-toxic and has no side effects on human body when used in food. Specific description is as follows: Sodium polyacrylate, is a new type of functional polymer materials and important chemical products, solid products are white or light yellow lumps or powder, liquid products are colorless or light yellow viscous liquid. It is odorless, often used as water treatment agent, brine refining and latex thickening, also used as food viscosity, emulsifier. It has the following effects in food: 1. It can significantly enhance the protein adhesion in raw flour. 2. It can make starch particles combine with each other and disperse and penetrate into the net structure of protein. 3. It can be used in the flour to form a dense texture dough, making the surface smooth and glossy. 4. Prevents soluble starch from seeping out. 5. Keeps water evenly in the dough, has the effect of water retention, and prevents the dough from drying out. 6. Improve the ductility of the dough.