CAS 10034-99-8 appears in our catalog under these names: Magnesium sulfate heptahydrate, 99+% , Magnesium sulfate heptahydrate, ACS, 98.0-102.0% , Magnesium sulfate heptahydrate . Offered by: Thermo Scientific (Alfa Aesar). Available pack sizes: 1000g, 5000g, 100g, 500g, 2kg, 1kg.