查看“︁硫酸钾”︁的源代码

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{{Chembox
|   Name = 硫酸钾
|   ImageFile = Potassium_sulfate.svg
|   ImageSize = 200px
|   ImageName = 硫酸钾
|   OtherNames = 
| Section1 = {{Chembox Identifiers
| CASNo = 7778-80-5
| CASNo_Ref = {{cascite|correct|CAS}}
|    RTECS  = 
|  ChemSpiderID_Ref  = {{chemspidercite|correct|chemspider}}
|  ChemSpiderID  =  22915
|  UNII_Ref  = {{fdacite|correct|FDA}}
|  UNII  =  1K573LC5TV
|  KEGG_Ref  = {{keggcite|correct|kegg}}
|  KEGG  =  D01726
|  ChEMBL_Ref  = {{ebicite|changed|EBI}}
|  ChEMBL  =  1201793
|  InChI  =  1/2K.H2O4S/c;;1-5(2,3)4/h;;(H2,1,2,3,4)/q2*+1;/p-2
|  InChIKey  =  OTYBMLCTZGSZBG-NUQVWONBAU
|  ChEBI_Ref  = {{ebicite|correct|EBI}}
|  ChEBI  =  32036
|  SMILES  =  [K+].[K+].[O-]S([O-])(=O)=O
|  StdInChI_Ref  = {{stdinchicite|correct|chemspider}}
|  StdInChI  =  1S/2K.H2O4S/c;;1-5(2,3)4/h;;(H2,1,2,3,4)/q2*+1;/p-2
|  StdInChIKey_Ref  = {{stdinchicite|correct|chemspider}}
|  StdInChIKey  =  OTYBMLCTZGSZBG-UHFFFAOYSA-L
|  PubChem  =  24507
}}
| Section2 = {{Chembox Properties
|K=2|S=1|O=4
|   Appearance = 无色或白色晶体<ref>[http://www.chemicalbook.com/ProductChemicalPropertiesCB9854321.htm 硫酸钾]. Chemical Book. [2018-2-7]</ref>
|   Density = 2.66 g/cm<sup>3</sup>，无水
|   Solubility = 11.1 g/100 ml (20℃)
|   MeltingPt = 1069℃ (1342 K)
|   BoilingPt = 1689℃ (1962 K)
  }}
| Section3 = {{Chembox Structure
|   Coordination = 
|   CrystalStruct = [[斜方晶系]]
  }}
| Section7 = {{Chembox Hazards
|   ExternalMSDS = [http://www.jtbaker.com/msds/englishhtml/p6137.htm External MSDS]
|   MainHazards = 刺激性
|   RPhrases = {{R22}}
|   SPhrases = {{S36}}
  }}
| Section8 = {{Chembox Other
|   OtherAnions = [[硫酸氢钾]]、[[亚硫酸钾]]、<br />[[亚硫酸氢钾]]、[[过硫酸钾]]
|   OtherCations = [[硫酸锂]]、[[硫酸钠]]、<br />[[硫酸镁]]}}
}}
'''硫酸钾'''（化学式[[钾|K]]<sub>2</sub>[[硫|S]][[氧|O]]<sub>4</sub>）是[[硫酸根]]离子与[[钾]][[离子]]结合生成的化合物。其固体为无色或白色六方形或-{斜方晶系}-结晶或颗粒状粉末。溶于[[水]]，不溶于[[醇]]、[[丙酮]]和[[二硫化碳]]。具有苦咸味。

== 用途 ==

硫酸钾在[[农业]]上是常用的[[钾肥]]，含鉀量約為50%，在台灣俗稱為"白加里"。此外，硫酸鉀在[[工业]]上还用于[[玻璃]]，[[染料]]，[[香料]]，[[医药]]等。

== 制取 ==
混合[[硫酸]]与[[氢氧化钾]]可以得到硫酸钾：
:<math>H_{2}SO_{4} + 2KOH \rightarrow K_{2}SO_{4} + 2H_{2}O</math>

根据K<sub>2</sub>SO<sub>4</sub>溶解度相对较小，可利用[[氯化钾]]和[[硫酸铵]]的复分解反应制得硫酸钾。<ref>王峰. 硫酸钾的制备[J]. 枣庄学院学报, 1998(3):49-50.</ref>

==参考文献==
{{reflist}}

==拓展阅读==
*<small>刘晓红, 高新愿, 胡海燕,等. 甲醇介质中用硫酸钠制备硫酸钾[J]. 南昌大学学报(工科版), 2017, 39(1):13-15.</small>


{{鉀化合物}}
{{硫酸盐}}

[[Category:硫酸盐]]
[[Category:钾化合物]]
[[Category:化學肥料]]
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