Sodium hydroxide
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| Names | |
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| Preferred IUPAC name
Sodium hydroxide[3] | |
| Seestematic IUPAC name
Sodium oxidanide | |
| Ither names | |
| Identifiers | |
3D model (JSmol)
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| ChEBI | |
| ChemSpider | |
| EC Nummer | 215-185-5 |
| Gmelin Reference | 68430 |
| KEGG | |
| MeSH | Sodium+Hydroxide |
PubChem CID
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| RTECS nummer | WB4900000 |
| UNII | |
| UN nummer | 1823 |
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| Properties | |
| NaOH | |
| Molar mass | 39.9971 g mol−1 |
| Appearance | White, waxy, opaque crystals |
| Odour | odorless |
| Density | 2.13 g/cm3 |
| Meltin pynt | 318 °C (604 °F; 591 K) |
| Bylin pynt | 1,388 °C (2,530 °F; 1,661 K) |
| 111 g/100 mL (at 20 °C) | |
| Solubility in methanol | 23.8 g/100 mL |
| Solubility in ethanol | <<13.9 g/100 mL |
| Vapour pressur | <2.4 kPa (at 20 °C) |
| Acidity (pKa) | 13 |
| Refractive index (nD) | 1.3576 |
| Hazards | |
| GHS pictograms | 
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| NFPA 704 | |
| Relatit compoonds | |
Ither anions
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Sodium hydrosulfide |
Ither cations
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Caesium hydroxide |
Except whaur itherwise notit, data are gien for materials in thair staundart state (at 25 °C [77 °F], 100 kPa). | |
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| Infobox references | |
Sodium hydroxide, kent as caustic soda an aw,[1][2] or lye, is an inorganic compoond wi the chemical formula NaOH (written as NaHO an aw). It is a white solit, an is a heichly caustic metallic base an alkali saut. It is available in pellets, flakes, granules, an as prepared solutions at a nummer o different concentrations.[4] Sodium hydroxide furms an approximately 50% (bi wecht) saturatit solution wi watter.[5]
Sodium hydroxide is soluble in watter, ethanol an methanol. This alkali is deliquescent an readily absorbs moistur an carbon dioxide in air.
Sodium hydroxide is uised in mony industries, maistly as a strang chemical base in the manufacture o pulp an paper, textiles, drinkin watter, saips an detergents an as a drain cleaner. Warldwide production in 2004 wis approximately 60 million tonnes, while demand wis 51 million tonnes.[6]
References
[eedit | eedit soorce]- ↑ a b "Material Safety Datasheet" (PDF). Archived frae the original (PDF) on 28 Februar 2008. Retrieved 6 December 2013.
- ↑ a b "Material Safety Datasheet 2" (PDF). Archived frae the original (PDF) on 3 August 2012. Retrieved 6 December 2013.
- ↑ a b "Sodium Hydroxide - Compound Summary". Retrieved 12 Juin 2012.
- ↑ http://www.sigmaaldrich.com/analytical-chromatography/analytical-products.html?TablePage=103242111
- ↑ http://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=14798&loc=ec_rcs#x27
- ↑ Cetin Kurt, Jürgen Bittner (2005), "Sodium Hydroxide", Ullmann's Encyclopedia o Industrial Chemistry, Weinheim: Wiley-VCH, doi:10.1002/14356007.a24_345.pub2
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