... :C24H36O25S2Molecular Structure:Physico-chemical properties:White PowderPicture:Carrageenan is a kind of natural polysaccharide hydrophilic ... making the gel elastic and water-keeping. Carrageenan is extensively applied in food,medicine,chemical ... and agriculture. Specifications: 1,Kappa refined carrageenan; 2,Kappa semi-refined carrageenan; 3,Iota semi-refined carrageenan; 4,Iota refined carrageenan.