查看“︁丙酸钙”︁的源代码

{{chembox
| Watchedfields = changed
| verifiedrevid = 442834022
|Reference=<ref>''Merck Index'', 11th Edition, '''1705'''.</ref>
|ImageFile=Calcium propanoate.png
|ImageSize=200px
|IUPACName=Calcium propanoate
|Section1= {{Chembox Identifiers
|  CASNo_Ref = {{cascite|correct|??}}
| CASNo=4075-81-4
|  PubChem=19999
|  EINECS =223-795-8
|  SMILES=CCC(=O)[O-].CCC(=O)[O-].[Ca+2]
|  ChemSpiderID = 18840
|  InChI = 1/2C3H6O2.Ca/c2*1-2-3(4)5;/h2*2H2,1H3,(H,4,5);/q;;+2/p-2
|  InChIKey = BCZXFFBUYPCTSJ-NUQVWONBAE
|  StdInChI = 1S/2C3H6O2.Ca/c2*1-2-3(4)5;/h2*2H2,1H3,(H,4,5);/q;;+2/p-2
|  StdInChIKey = BCZXFFBUYPCTSJ-UHFFFAOYSA-L
  }}
|Section2= {{Chembox Properties
|  Formula=C<sub>6</sub>H<sub>10</sub>CaO<sub>4</sub>
|  MolarMass=186.2192
|  Appearance =白色结晶固体
|  Density=
|  MeltingPt=
|  BoilingPt=
|  Solubility= 49 g/100 mL (0 °C) <br> 55.8 g/100 mL (100 °C)
|  SolubleOther = 微溶于[[甲醇]]，[[乙醇]] <br>不溶于[[丙酮]]，[[苯]] 
  }}
|Section3 = {{Chembox Structure
|  CrystalStruct = 单斜
  }}
|Section4= {{Chembox Hazards
|  MainHazards=
|  FlashPt=
|  Autoignition=
| NFPA-H = 2
| NFPA-F = 1
| NFPA-R = 0
  }}
}}

'''丙酸钙'''化学式[[钙|Ca]]([[碳|C]]<sub>2</sub>[[氢|H]]<sub>5</sub>C[[氧|O]]O)<sub>2</sub>，是[[丙酸]]的钙盐。

==制备==
丙酸钙可直接由[[氧化钙]]合成：
:<math>\mathrm{CaO \ + \ 2 \ C_2H_5{-}COOH \ \xrightarrow[0.6-0.95 bar]{\triangle} \ Ca(C_2H_5{-}COO)_2 \ + \ H_2O \uparrow}</math>
生成的水会与过量的CaO生成[[氢氧化钙]]，过量的水于低压下（0.6〜0.95 bar），在70-90℃下蒸发。
: a) <math>\mathrm{CaO + \!\ H_2O \rightarrow Ca(OH)_2}</math>

: b) <math>\mathrm{Ca(OH)_2 + 2 \ C_2H_5COOH \rightarrow Ca(C_2H_5COO)_2 + 2 \ H_2O}</math>

==应用==
丙酸是一种常用的食品防腐剂，添加至面包等烘焙食品，加工的肉类，乳清，和其他奶制品等。<ref name="alimentarius">{{Cite web |url=http://www.codexalimentarius.net/gsfaonline/additives/details.html?id=306 |title=Codex Alimentarius data for calcium propanoate |accessdate=2013-08-31 |archive-date=2006-10-21 |archive-url=https://web.archive.org/web/20061021214228/http://www.codexalimentarius.net/gsfaonline/additives/details.html?id=306 |dead-url=no }}</ref>农业上，丙酸钙添加到饲料中预防奶牛的{{en-link|乳热症|Milk fever|乳热症}}。<ref name="feed">{{Cite web |url=http://www.ams.usda.gov/NOP/NationalList/TAPReviews/CalciumPropionate.pdf |title=Center for Food and Nutrition Policy review of use of calcium propanoate as an organic agent in cow feed and as milk fever prevention |accessdate=2013-08-31 |archive-date=2006-10-01 |archive-url=https://web.archive.org/web/20061001080250/http://www.ams.usda.gov/nop/NationalList/TAPReviews/CalciumPropionate.pdf |dead-url=no }}</ref>丙酸钙与另一种防腐剂[[苯甲酸钠]]不同，其抑菌不需要酸性环境。<ref name="ingredients">{{cite web| title=Ingredients -- Calcium propionate| url=http://sci-toys.com/ingredients/calcium_propionate.html| accessdate=2007-03-10| archive-date=2007-02-20| archive-url=https://web.archive.org/web/20070220211341/http://sci-toys.com/ingredients/calcium_propionate.html| dead-url=no}}</ref>

丙酸钙作为烘焙食品的防腐剂，添加剂量通常在0.1-0.4%之间，<ref>{{cite web |url=http://www.nysaes.cornell.edu/necfe/pubs/pdf/Venture/venture3_chemical.html |title=存档副本 |accessdate=2010-02-28 |deadurl=yes |archiveurl=https://web.archive.org/web/20100412155551/http://www.nysaes.cornell.edu/necfe/pubs/pdf/Venture/venture3_chemical.html |archivedate=2010-04-12 }}</ref> （饲料中可能更高，达到1%）。 
==参考资料==
<references/>

==外部链接==
*[http://www.cspinet.org/reports/chemcuisine.htm Center for Science in the Public Interest list of food additives]{{Wayback|url=http://www.cspinet.org/reports/chemcuisine.htm |date=20060901011804 }}

{{钙化合物}}
{{丙酸盐}}

[[Category:丙酸盐]]
[[Category:钙化合物]]
[[Category:防腐剂]]
[[Category:有E编码的食品添加剂]]