CAS 7786-30-3 appears in our catalog under these names: Magnesium chloride, ultra dry, 99.9% (metals basis) , Magnesium chloride, ultra dry, 99.99% (metals basis) , Magnesium chloride anhydrous, 99% , Magnesium chloride, anhydrous, 99% , Magnesium chloride, 1M aq. soln., sterile-filtered . Offered by: Thermo Scientific (Alfa Aesar). Available pack sizes: 10g, 50g, 250g, 1000g, 5kg, 25kg, 1kg , 5kg .