Product name Diclofenac Sodium product alias armiel, dichlorominic pain CAS 15307-79-6 EINECS not 239-346-4 Molecular formula C14H18C12N2O Molecular weight 318.13 Content 98% Properties colorless crystalline powder Melting point 280-282 Solubility soluble in polar organic solvents such as water and ethanol.