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Encyclopedia > Sodium perborate
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Sodium perborate (PBS), also called perboric acid or metaborate peroxyhydrate, is a white, odorless, water-soluble chemical compound with chemical formula NaBO3. It crystallizes as monohydrate or tetrahydrate. Sodium perborate is manufactured by reaction of sodium tetraborate, hydrogen peroxide, and sodium hydroxide. It is a skin irritant. ... A chemical formula (also called molecular formula) is a concise way of expressing information about the atoms that constitute a particular chemical compound. ... Jump to: navigation, search General Name, Symbol, Number sodium, Na, 11 Chemical series alkali metals Group, Period, Block 1, 3, s Appearance silvery white Atomic mass 22. ... General Name, Symbol, Number boron, B, 5 Chemical series metalloids Group, Period, Block 13, 2, p Appearance black Atomic mass 10. ... General Name, Symbol, Number oxygen, O, 8 Chemical series nonmetals Group, Period, Block 16, 2, p Appearance colorless Atomic mass 15. ... Borax, (Na2B4O7·10H2O, sodium borate or sodium tetraborate) is an important boron compound. ... Jump to: navigation, search Hydrogen peroxide (H2O2) is a clear liquid, slightly more viscous than water, that has strong oxidizing properties and is therefore a powerful bleaching agent that has found use as a disinfectant, as an oxidizer, and (particularly in high concentrations as high test peroxide (HTP)) as a... Jump to: navigation, search Flash point non flammable Supplementary data page Structure and properties n, εr, etc. ...

Perborate dimer, peroxide bond shown in red
Perborate dimer, peroxide bond shown in red

Unlike percarbonate and perphosphate, perborate is not just an addition compound of peroxide, but contains true peroxygen bonds. This makes the material more stable, safer for handling and storage. The monohydrate form dissolves better than the tetrahydrate and has higher heat stability; it is prepared by heating the tetrahydrate.


Sodium perborate undergoes hydrolysis in contact with water, producing hydrogen peroxide and borate. It serves as a source of active oxygen in many detergents, laundry detergents, cleaning products, and laundry bleaches. It is also present in some tooth bleaching formulas. It has antiseptic properties and can act as a disinfectant. Hydrolysis is a chemical process in which a molecule is cleaved into two parts by the addition of a molecule of water. ... Jump to: navigation, search Hydrogen peroxide (H2O2) is a clear liquid, slightly more viscous than water, that has strong oxidizing properties and is therefore a powerful bleaching agent that has found use as a disinfectant, as an oxidizer, and (particularly in high concentrations as high test peroxide (HTP)) as a... Jump to: navigation, search The borate ion is BO33-. A borate is a compound of boron and oxygen with more electropositive elements. ... Jump to: navigation, search A detergent is a compound, or a mixture of compounds, intended to assist cleaning. ... Laundry detergent is a substance which is added when one is washing laundry to help get the laundry cleaner. ... In chemistry, to bleach something generally means to whiten it or oxidize it. ... Tooth bleaching, also known as tooth whitening, is a common procedure in general dentistry but most especially in the field of cosmetic dentistry. ... Jump to: navigation, search An antiseptic (Greek αντι, against, and σηπτικος, putrefactive) is a substance that prevents the growth and reproduction of various microorganisms (such as bacteria, fungi, protozoa, and viruses) on the external surfaces of the body. ... Disinfection The destruction of pathogenic and other kinds of microorganisms by physical or chemical means Disinfectants are chemical substances used to kill viruses and microbes (germs), such as bacteria and fungi. ...


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 hypochlorite is a chemical compound with the formula NaClO. A solution of sodium hypochlorite is frequently used as a disinfectant and as a bleaching agent; indeed, often it is simply called bleach, though other chemicals are sometimes given that name as well. ... Jump to: navigation, search Yarn drying after being dyed in the early American tradition, at Conner Prairie living history museum. ... It has been suggested that Textile manufacturing be merged into this article or section. ...


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 tetra acetyl ethylene diamine (TAED).


Due to the environmental impact of waste borates, sodium perborate is increasingly being replaced with sodium percarbonate. Jump to: navigation, search The borate ion is BO33-. A borate is a compound of boron and oxygen with more electropositive elements. ... Sodium percarbonate (or sodium carbonate peroxyhydrate) is an addition compound of sodium carbonate and hydrogen peroxide. ...


See also


  Results from FactBites:
 
Sodium perborate - Wikipedia, the free encyclopedia (258 words)
Sodium perborate is manufactured by reaction of sodium tetraborate, hydrogen peroxide, and sodium hydroxide.
Sodium perborate is a less aggressive bleach than sodium hypochlorite, causing less degradation to dyes and textiles.
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).
Sodium percarbonate particles (A) - Patent 4156039 (4570 words)
Sodium percarbonate particles according to claim 1 consisting essentially of a sodium percarbonate nucleus and an encasing layer consisting essentially of (1) said dehydrated sodium perborate or (2) said dehydrated sodium perborate and sodium silicate, the total content of active oxygen in the particles being 11 to 15.5%.
Sodium percarbonate particles according to claim 12 wherein the encasing layer is (2) and the sodium silicate is sodium meta silicate or waterglass.
Sodium percarbonate particles according to claim 18 wherein the encasing layer is made from the dehydrated sodium perborate, waterglass and sodium percarbonate dust.
  More results at FactBites »


 

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