Ferric Sodium Edetate Trihydrate occurs as a light yellow powder. It is soluble in water. As a chelate, the absorption rate can reach more than 2.5 times of ferrous sulfate. At the same time it will not easily affected by the phytic acid and oxalate. CAS: 15708-41-5; Molecular formula:C10H12FeN2NaO8*3H2O; https://www.richen-nutritional.com/ferric-sodium-edetate-trihydrate-food-grade-for-iron-supplements-product/