Movatterモバイル変換


[0]ホーム

URL:


Jump to content
WikipediaThe Free Encyclopaedia
Rake

Sodium hydroxide

Frae Wikipedia, the free beuk o knawledge
The "Scots" that wis uised in this airticle wis written bi a body that haesna a guid grip on the leid.
Pleasemak this airticle mair better gin ye can.(Dizember 2020)
Sodium hydroxide
Unit cell, spacefill model of sodium hydroxide
Sample of sodium hydroxide as pellets in a watchglass
Names
Preferred IUPAC name
Sodium hydroxide[1]
Seestematic IUPAC name
Sodium oxidanide
Ither names
Caustic soda

Lye[2][3]
Ascarite
White caustic

Sodium hydrate[1]
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
EC Nummer215-185-5
Gmelin Reference68430
KEGG
MeSHSodium+Hydroxide
RTECS nummerWB4900000
UNII
UN nummer1823
  • InChI=1S/Na.H2O/h;1H2/q+1;/p-1 YesY
    Key: HEMHJVSKTPXQMS-UHFFFAOYSA-M YesY
  • InChI=1/Na.H2O/h;1H2/q+1;/p-1
    Key: HEMHJVSKTPXQMS-REWHXWOFAM
  • O[Na]
Properties
NaOH
Molar mass39.9971 g mol−1
AppearanceWhite, waxy, opaque crystals
Odourodorless
Density2.13 g/cm3
Meltin pynt318 °C (604 °F; 591 K)
Bylin pynt1,388 °C (2,530 °F; 1,661 K)
111 g/100 mL (at 20 °C)
Solubility inmethanol23.8 g/100 mL
Solubility inethanol<<13.9 g/100 mL
Vapour pressur<2.4 kPa (at 20 °C)
Acidity (pKa)13
Refractive index (nD)1.3576
Hazards
GHS pictogramsThe corrosion pictogram in the Globally Harmonized Seestem o Classification an Labelling o Chemicals (GHS)
NFPA 704
Relatit compoonds
Itheranions
Sodium hydrosulfide
Ithercations
Caesium hydroxide

Lithium hydroxide
Potassium hydroxide
Rubidium hydroxide

Except whaur itherwise notit, data are gien for materials in thairstaundart state (at 25 °C [77 °F], 100 kPa).
YesY verify (whit is YesYN ?)
Infobox references

Sodium hydroxide, kent ascaustic soda an aw,[2][3] orlye, is aninorganic compoond wi thechemical formula NaOH (written as NaHO an aw). It is a white solit, an is a heichlycaustic metallicbase analkalisaut. 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 inwatter,ethanol anmethanol. Thisalkali isdeliquescent an readily absorbsmoistur ancarbon dioxide inair.

Sodium hydroxide is uised in mony industries, maistly as a strangchemicalbase in the manufacture opulp anpaper,textiles,drinkin watter,saips andetergents an as adrain cleaner. Warldwide production in 2004 wis approximately 60 milliontonnes, while demand wis 51 million tonnes.[6]

References

[eedit |eedit soorce]
This airticle is astub. Ye can help Wikipaedia biexpandin it.
Taen frae "https://sco.wikipedia.org/w/index.php?title=Sodium_hydroxide&oldid=891354"
Categeries:
Hidden categories:

[8]ページ先頭

©2009-2025 Movatter.jp