Profile: Qingdao Zhouji Chemical Industry Co., Ltd. offers anhydrous calcium chloride, dihydrate calcium chloride, industrial grade sodium alginate and food grade sodium alginate. We are an ISO 9002:2000 certified company. Sodium alginate is one kind of electrolyte of organic macromolecule among algae of brown algae types such as kelp, as principal components of cell membrane with other substances. Food grade sodium alginate is in the form of ivory-white granule/powder, odorless and low odor of sourness. Chemical components of sodium alginate belong to carbohydrate and it only contains free carboxyl in contrast to starch & fibrin. It is one kind of chain type macromolecule heteropolymer brought by copolymerization between mannuronic acid and guluronic acid. Degree of polymerization of sodium alginate differs according to raw materials and distilling methods. The degree of polymerization of common algin is within the range from 80 to 750 and molecular weight is from 14000 to 132000. Our products are widely used in printing, textile, food and pharmacy industry. We export our products to various countries worldwide.