Magnesium Sulfate "Heptahydrate" / Fine Crystals / 4 Ounces / 99.9% Pure USP Food Grade / SHIPS FAST FROM USA TOTAL WEIGHT OF PRODUCT: 4 Ounces NUMBER OF BOTTLE(S): 1 Plastic Bottle TEXTURE: Fine Crystals GRADE: 99.9% USP Food Grade CAS #: 10034-99-8