This article provides a comprehensive analysis of sodium alginate, a natural polysaccharide derived from brown algae. Sodium alginate is a white or pale yellow powder with core properties such as gel formation and thickening stability. It is an internationally recognized safe food additive (E401) and is widely used in the food, pharmaceutical, and industrial sectors. With its advantages of being "natural, multifunctional, and environmentally friendly and biodegradable," market demand continues to grow, and its application boundaries will expand. Polifar will continue to provide high-quality products and services to meet global demand. - Polifar