Why is ferric chloride solution used to stop bleeding from a wound?

Ferric chloride solution is used to stop bleeding from a wound because:

(1)Blood is a colloidal solution.

(ii)Ferric chloride$\left({\mathrm{FeCl}}_3\right)$ is a chemical agent and a strong coagulant.

(iii)Blood contains colloidal impurities and ${\mathrm{FeCl}}_3$neutralizes the charge on these colloidal impurities and precipitation occurs.