Sodium hypochlorite is a chemical compound with the formula NaClO (5%).Sodium hypochlorite is used as an endodontic irrigant as it is an effective antimicrobial and has tissue-dissolving capabilities. It has low viscosity allowing easy introduction into the canal architecture, an acceptable shelf life, is easily available and inexpensive.
It is composed of a sodium cation (Na+) and a hypochlorite anion (ClO−); it may also be viewed as the sodium salt of hypochlorous acid.
When dissolved in water it is commonly known as bleach or liquid bleach.
Sodium hypochlorite is practically and chemically distinct from chlorine Sodium hypochlorite is frequently used as a disinfectant or a bleaching agent.