The barium sulfate x-ray contrast medium null where long-term stability

摘要

PURPOSE:To obtain barium sulfate X ray contrast media especially excellent in long-term sedimentation stability. CONSTITUTION:The characteristic of barium sulfate X ray contrast media comprises using a carboxymethyl cellulose sodium having =20cps and =200cps viscosity in 2% aqueous solution and =1.25M/C6 etherification degree as a suspension stabilizer. The barium sulfate X ray contrast media are especially excellent in long-term sedimentation stability and satisfy performances required as X ray contrast media for drinkability, fluidity and acid resistance.