Sodium+perborate

Sodium perborate (PBS) is, a white odorless, chemical compound soluble in water with the chemical composition NaBO3. It crystallizes as monohydrate, NaBO3 · H2O, hydrate, NaBO3 · 3H2O and tetrahydrate, NaBO3 · 4H2O. [1] monohydrate and tetrahydrate are the commercially important forms. [1] Unit primary structure of perborates sodium anion dimer B2O4 (OH) 42 -, which joined in the boron atoms of two bridges peroxo two in episode 6 membered chair-shaped and NaBO3 simplistic · nH2O-type formulas are just a convenient way to express the chemical composition of the medium.


 * Uses**

It serves as a source of active oxygen in many detergents, laundry detergents, cleaning products, and laundry bleaches.[1] It is also present in some tooth bleaching formulas. It is used as a bleaching agent for internal bleaching of a non vital root treated tooth. The sodium perborate is placed inside the tooth and left in place for an extended period of time to allow it to diffuse into the tooth and bleach stains from the inside out. It has antiseptic properties and can act as a disinfectant. It is also used as a "disappearing" preservative in some brands of eye drops.

Sodium perborate is a less aggressive bleach than sodium hypochlorite, causing less degradation to dyes and textiles. Borates also have some non-oxidative bleaching properties.

Sodium perborate releases oxygen rapidly at temperatures over 60 °C. To make it active at lower temperatures (40–60 °C), it has to be mixed with a suitable activator, typically tetraacetylethylenediamine (TAED).