CAS Number 10486-00-7
·
Linear Formula NaBO3 ·
4H2O
·
Molecular Weight 153.86
Sodium perborate (PBS) is a white, odorless,
water-soluble chemical compound with the chemical formula Na2B2O4(OH)4.
Detailed description
It is usually encountered as the tetrahydrate, but monohydrate, NaBO3·H2O and trihydrates are well known NaBO3·3H2O
and The monohydrate and tetrahydrate are the
commercially important forms. This salt is widely used in laundry detergents.
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).
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