Sodium
Perborate Monohydrate
Sodium Perborate monohydrate (Synonyms:
sodium peroxyborate, sodium peroxoborate, PB1) is similar
to sodium percarbonate as a famous oxygen bleach agent.
Sodium perborate offers many of the functional benefits
as liquid hydrogen peroxide in a stable solid form.
The oxidative power of sodium perborate improves the
cleaning, bleaching, stain removal and deodorizing performance
of powder detergent formulations, all fabric dry bleaches,
denture cleaners, automatic dishwasher detergents and
various institutional and industrial laundry products.
Used in active oxygen-type laundry
bleaches, plastic destaining and dishwashing compounds,
coffee-stain removers, denture cleaners, neutralizers
for cold-wave preparations, and the preparation of oxidizing
solutions for bleaching or other purposes. It can also
be used as a source of oxygen at elevated temperatures.
Sodium Perborate Tetrahydrate
Sodium perborate usually exists in
two forms, tetrahydrated and monohydrated. Sodium perborate
tetrahydrate is obtained by addition of hydrogen peroxide
to a sodium metaborate solution at a temperature close
to 20.degree. C. Sodium perborate monohydrate is produced
by dehydrating sodium perborate tetrahydrate in a fluid
bed with heated air. Sodium perborate releases nascent
oxygen at elevated temperatures, and so acts as a hydrogen
peroxide bleach. The monohydrated form is essentially
showing three advantages in comparison with the tetrahydrated
form: a higher content of available oxygen, a higher
heat stability and a higher dissolution rate into water.
Sodium perborate has been in detergent and personal
care formulations for many years. Its oxidative power
improves the cleaning, bleaching, stain removal and
deodorizing performance of powder detergent formulations,
all fabric dry bleachs, denture cleaners, automatic
dishwasher detergents and various institutional and
industrial laundry products. It’s main disadvantage
is that the bleaching action only takes place at elevated
temperatures. To release it’s bleaching action
at lower temperatures, an activator must be added. |