Magnesium Oxide Granules occurs as white , Odorless and free flowing granules. It will absorb carbon dioxide slowly in the air and it is practically insoluble in water and in alcohol. CAS No. : 1309-48-4 Molecular Formula: MgO Molecular Weight: 40.3 Quality Standard: USP/FCC/E530/BP/E Product Code is RC.03.04.005781 Features https://www.richen-nutritional.com/magnesium-oxide-granules-food-grade-for-magnesium-tableting-product/