CAS 7791-18-6 appears in our catalog under these names: Magnesium chloride hexahydrate, Puratronic|r, 99.999% (metal, Magnesium chloride hexahydrate, ACS, 99.0-102.0% , Magnesium chloride hexahydrate, 97+% , Magnesium chloride hexahydrate . Offered by: Thermo Scientific (Alfa Aesar). Available pack sizes: 25g, 100g, 500g, 2kg, 10kg, 250g, 1kg.