Potassium alginate is a chemical compound that is the potassium salt of alginic acid.
From the en.wikipedia.org
The chemical compoundsodium alginate is the sodiumsalt of alginic acid.
From the en.wikipedia.org
Alginic acid, also called algin or alginate, is an anionicpolysaccharide distributed widely in the cell walls of brown algae, where it, through binding water, forms a viscous gum.