can't read?
Sodium alginate is a chemical compound is a salt of sodium of alginic acid. It forms a gum, when extracted from the cell wall of brown algae, is used by the food industry to increase the viscosity and as emulsifier.
S 1625 (OTTO) Sodium alginate Cas 9005-38-3 - used in the preparation of alginate hydrogels with tunable mechanical properties.