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| Names | |
|---|---|
| IUPAC name sodium carbonate—hydrogen peroxide (2/3) | |
| Other names PCS, solid hydrogen peroxide, Sodium carbonate hydrogen peroxide, sodium carbonate peroxyhydrate | |
| Identifiers | |
| CAS Number | |
| 3D model (JSmol) | |
| ChemSpider | |
| ECHA InfoCard | 100.036.082 
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| EC Number |
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| PubChem CID | |
| CompTox Dashboard (EPA) | |
InChI
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SMILES
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| Properties | |
| Chemical formula | Na2CO3·1.5H2O2 |
| Molar mass | 157.01 g/mol |
| Appearance | white solid |
| Solubility in water | 150 g/l |
| Hazards | |
| Occupational safety and health (OHS/OSH): | |
| Main hazards | Irritant, Oxidizer |
| Flash point | Non-flammable |
| Related compounds | |
| Other anions | Sodium carbonate Sodium bicarbonate |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa).
 Y verify (what is ?)
Infobox references
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Sodium percarbonate is a chemical, an adduct of sodium carbonate and hydrogen peroxide (a perhydrate), with formula Na2CO3 · 1.5H2O2. It is a colorless, crystalline, hygroscopic and water-soluble solid. It is used in some eco-friendly cleaning products and as a laboratory source of anhydrous hydrogen peroxide.
This product contains the carbonate anion, and should not be confused with sodium peroxocarbonate Na2CO4 or peroxodicarbonate Na2C2O6, which contain different anions.
Structure
At room temperature, solid sodium percarbonate has the orthorhombic crystal structure, with the Cmca crystallographic space group. The structure changes to Pbca as the crystals are cooled below about −30 °C.
Production
Sodium percarbonate is produced industrially by reaction of sodium carbonate and hydrogen peroxide, followed by crystallization. Also, dry sodium carbonate may be reacted directly with concentrated hydrogen peroxide solution. World production capacity of this compound was estimated at several hundred thousand tonnes for 2004. It can be obtained in the laboratory by reacting the two substances in aqueous solution with proper control of the pH or concentrations.
Uses
Sodium percarbonate is an oxidizing agent and ingredient in a number of home and laundry cleaning products, including bleach products such as OxiClean and Tide laundry detergent. It contains no phosphorus or nitrogen. Dissolved in water, it yields a mixture of hydrogen peroxide (which eventually decomposes to water and oxygen) and sodium carbonate ("soda ash").
Sodium percarbonate can be used in organic synthesis as a convenient source of anhydrous H2O2, in particular in solvents that cannot dissolve the carbonate but can leach the H2O2 out of it.
References
- ^ Craig W. Jones (1999). Applications of hydrogen peroxide and its derivatives. Royal Society of Chemistry. ISBN 0854045368.
- ^ R. G. Pritchard and E. Islam (2003). "Sodium percarbonate between 293 and 100 K". Acta Crystallographica Section B. B59: 596–605. doi:10.1107/S0108768103012291.
- Harald Jakob, Stefan Leininger, Thomas Lehmann, Sylvia Jacobi, Sven Gutewort. "Peroxo Compounds, Inorganic". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a19_177.pub2. ISBN 978-3527306732.
{{cite encyclopedia}}: CS1 maint: multiple names: authors list (link) - J. M. Adams and R. G. Pritchard (1977). "The crystal structure of sodium percarbonate: an unusual layered solid". Acta Crystallographica Section B. B33: 3650–3653. doi:10.1107/S0567740877011790.
- McKillop, A (1995). "Sodium perborate and sodium percarbonate: Cheap, safe and versatile oxidising agents for organic synthesis". Tetrahedron. 51: 6145. doi:10.1016/0040-4020(95)00304-Q.