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Potassium alum

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Potassium alum

Molecular formula: AlKO8S2 CAS# 10043-67-1
Categories: Inorganic salt , Double salt
Names
English:
ALUMINUM POTASSIUM DISULFATE
Alum, potassium anhydrous
Aluminium potassium bis(sulphate)
Aluminium potassium sulfate (1:1:2)
Aluminum potassium alum
Aluminum potassium sulfate
Aluminum potassium sulfate (1:1:2)
E522
Potash alum
Potassium alum [Wiki]
Sulfuric acid, aluminum potassium salt (2:1:1)(CAS)
aluminum;potassium;disulfate(IUPAC)
Русский:
Сернокислый алюминий-калий
Сульфат алюминия-калия [Wiki]
алюмокалиевые квасцы
German:
Alaun
Aluminiumkaliumsulfat
Aluminiumkaliumsulfat (1:1:2)(IUPAC)
Kaliumalaun
Kaliumaluminiumsulfat
العربية:
شب البوتاسيوم
شبة البوتاسيوم
Español:
Alumbre de potasio [Wiki]
Alumbre napolitano
Alumbre potásico
Italiano:
Allume di potassio [Wiki]
allume di rocca
allume potassico
solfato doppio di alluminio e potassio(IUPAC)
日本語:
カリウムミョウバン [Wiki]
カリウム明礬
硫酸カリウムアルミニウム十二水和物(IUPAC)
中文:
十二水合硫酸鋁鉀(IUPAC)
明矾 [Wiki]
明礬
生礬
白礬
硫酸铝钾
鉀鋁礬
French:
Alun [Wiki]
alun de potassium
disulfate d'aluminium et de potassium
Português:
Alúmen de potássio [Wiki]
alúmen (alume) de potassa
pedra-ume

Variants of the formula:

KAl(SO4)2
K(+1)Al(+3)(S(+6)O(-2)4)2
$slope(45)K^+/0O`^-\S/O`/`/O/\O^-/0Al^3+/0O`^-\S/O`/\O`\`/O`^-
Elemental composition
Can't show the diagram.
Symbol Element Atomic weight Number of atoms Mass percent

Reactions in which Potassium alum is involved

  • 4KAl(SO4)2 "800^oC"--> 2K2SO4 + 2Al2O3 + 6SO2"|^" + 3O2"|^"
  • KAl(SO4)2 + 3KOH "T"-> Al(OH)3 + 2K2SO4
  • KAl(SO4)2 + 4KOH -> K[Al(OH)4] + 2K2SO4