Product name: Epsom Salt Molecular Formula: MgSo4.7H2o HS Code: 28332100 CAS 10034-99-8 Purity: 98% min. Most of us use bath salts as a way to enhance a relaxing soak in the tub, but bath salts are believed to provide several health benefits for people with: muscle pain and stiffness stiff, aching joints arthritis circulation problems headaches anxiety and stress skin conditions, such as eczema dry and itchy skin