查看“︁硬脂酸镁”︁的源代码

{{chembox
|  Reference = <ref name="GESTIS">{{GESTIS|ZVG=21530|CAS=557-04-0|Datum=22. Dezember 2007}}</ref>
|  ImageFile = Magnesium stearate.png
|  ImageSize = 250px
|  IUPACName = Magnesium octadecanoate
|  OtherName = 十八烷酸镁<br />十八酸镁
| Section1 = {{Chembox Identifiers
|   CASNo_Ref = {{cascite}}
|   CASNo = 557-04-0
|   PubChem = 11177
|   SMILES = CCCCCCCCCCCCCCCCCC(=O)[O-].CCCCCCCCCCCCCCCCCC(=O)[O-].[Mg+2]
  }}
| Section2 = {{Chembox Properties
|   Formula = C<sub>36</sub>H<sub>70</sub>MgO<sub>4</sub>
|   MolarMass = 591.27
|   Appearance = 白色粉末
|   Density = 1.05 g·cm<sup>&minus;3</sup><ref>{{cite web |url=http://www.silbermann.de/download/SDB/05618200.pdf |title=存档副本 |accessdate=2009-12-24 |deadurl=yes |archiveurl=https://web.archive.org/web/20071008181250/http://www.silbermann.de/download/SDB/05618200.pdf |archivedate=2007-10-08 }}</ref>
|   MeltingPtC = 150
|   BoilingPt = 
|   Solubility = 不溶于水
|   SolOther = 微溶于[[苯]]，不溶于[[醚]]
  }}
| Section7 = {{Chembox Hazards
|   ExternalMSDS = [http://ptcl.chem.ox.ac.uk/MSDS/MA/magnesium_stearate.html 硬脂酸镁MSDS]}}
|   FlashPt = 250 °C
|   LD50 = > 1000 mg/kg (大鼠经口)
}}

'''硬脂酸镁'''，分子式(C<sub>17</sub>H<sub>35</sub>COO)<sub>2</sub>Mg。

==性质==
白色无臭无味细软光亮粉末。微溶于水，溶于热的[[乙醇]]溶液。与强酸反应生成[[硬脂酸]]和相应的镁盐。工业品含少量[[油酸]]和7％的[[氧化镁]]。低毒。

==制备==
由[[硬脂酸]]与[[氢氧化钠]]反应生成钠皂与[[硫酸镁]]溶液反应，经分离、在90°C干燥而得。
:<math>\ C_{17}H_{35}COOH+NaOH\rightarrow C_{17}H_{35}COONa+H_2O</math>
:<math>\ 2C_{17}H_{35}COONa+MgSO_4\rightarrow (C_{17}H_{35}COO)_2Mg+Na_2SO_4</math>

==用途==
用作药片脱模剂、[[化妆品]]配料，也用于配合钙皂和锌皂，而作为聚氯乙烯的稳定剂。

==参考资料==
{{reflist}}

{{硬脂酸盐}}
[[Category:镁化合物]]
[[Category:硬脂酸盐]]