Excellent calcium chelating ability and anti-ash deposition ability, excellent compound performance with inorganic builders such as zeolite and silicon layer, no layering with surfactant, can be used to manufacture liquid detergent; good pH buffering ability , To reduce the irritation of the detergent on the skin; improve the performance of powder spraying slurry, increase the concentration of slurry, save energy consumption; increase the cleanliness and strength of washing powder particles, reduce the content of fine powder; the recommended amount of 0.5- 1%, the recommended dosage in laundry detergent formula is 1-2%.