https://www.bakechem.com/products/carrageenan-thickener-food-additive-e407-cas-no-9000-07-1.html Carrageenan E407, CAS No.: 9000-07-1, also known as Eucheuma plastic, stone cauliflower,it is from Eucheuma, seaweed, carrageenan and other red algae seaweed extracted from the hydrophilic colloid.All Rights Reserved