RAW MATERIALS RANGE GUIDE Dispersants/Deflocculants PolyphosphatesPolyphosphates such as Disodium pyrophosphate and Tetrapotassium pyrophosphate are strong dispersants in fresh water mud systems. LignosulfonatesLignosulfonates are effective drilling mud dispersants in clay-based muds. Bisley supplies sodium lignosulfonate. PolyacrylatesPolyacrylates are best utilized in soft water drilling muds with low salinity to achieve a high level of dispersion. Bisley supplies sodium polyacrylate.