As a 20% solution, Ferric Sulphate is a coagulative and hemostatic agent which forms ferric ion-protein complex on contact with blood
It seals the damaged vessels mechanically, thus producing hemostasis, and the capillary orifices are occluded by the agglutinated protein complex, which prevents blood clot formation
It causes a local and reversible inflammatory response to the oral soft tissues
The recommended application time is 1–3 min and should be placed directly against the damaged tissue due to its quick action
Solutions of Ferric Sulphate above 20% are highly acidic and may cause considerable tissue irritation and postoperative root sensitivity.