查看“︁氢氧化亚铁”︁的源代码

{{chembox
| Watchedfields = changed
| verifiedrevid = 265474109
| ImageFile = Mg(OH)2Xray.jpg
| ImageName = 氢氧化亚铁
| IUPACName = Iron(II) hydroxide
| OtherNames = 氢氧化铁(II)
| Section1 = {{Chembox Identifiers
| CASNo = 18624-44-7
| CASNo_Ref = {{cascite}}
| PubChem = 10129897
  }}
| Section2 = {{Chembox Properties
| Formula = Fe(OH)<sub>2</sub>
| MolarMass = 89.86<ref name=" CRC Handbook of Chemistry and Physics 97th Edition "> {{Cite book |  date = 2016-06-24  |  title = CRC Handbook of Chemistry and Physics 97th Edition | accessdate = 2017-09-30 | pages = 4-67 | language = 英语 | ISBN = 1-4987-5428-7 | }} </ref>
| Appearance = 白绿色六方晶体<ref name=" CRC Handbook of Chemistry and Physics 97th Edition " />
| Density = 3.4 g/cm<sup>3</sup> <ref name=" CRC Handbook of Chemistry and Physics 97th Edition " /> <ref>Pradyot Patnaik. ''Handbook of Inorganic Chemicals''. McGraw-Hill, 2002, ISBN 0070494398</ref>
| Solubility =  0.000052g/100g（20 ℃）<ref name=" CRC Handbook of Chemistry and Physics 97th Edition " />
| SolubilityProduct = 8.0 x 10<sup>-16</sup>
| MeltingPt =
| BoilingPt =
  }}
| Section3 = {{Chembox Structure
| CrystalStruct = [[六方]]<ref name=" CRC Handbook of Chemistry and Physics 97th Edition " />
| Coordination =
| MolShape = }}
| Section7 = {{Chembox Hazards
| ExternalMSDS =
| EUIndex = 未列明
| MainHazards =
| RPhrases =
| SPhrases =
| FlashPt = 不可燃
  }}
| Section8 = {{Chembox Related
| OtherCpds = [[氧化亚铁]]<br/>[[氢氧化铁]]
  }}
}}
'''氢氧化亚铁'''，化学式为Fe(OH)<sub>2</sub>，几乎不溶于水，是一种[[碱]]。用[[碱溶液]]和含有[[亚铁离子]]的[[盐溶液]]反应可制得。

== 性质 ==

氢氧化亚铁本身是白色物质，但可以被[[氧化]]为红棕色或红褐色的[[氢氧化铁]]。

== 制取氢氧化亚铁 ==
[[File:DSC01968 - Fe (II) Reactions.JPG|thumb|100px|left|左边第二个试管有几乎纯净的白色氢氧化亚铁。]]
在[[试管]]里注入少量[[硫酸亚铁]]溶液，滴入几滴[[煤油]]，用胶头滴管深入溶液液面之下滴入[[氢氧化钠]]溶液，可以看到有白色絮状沉淀生成Fe(OH)<sub>2</sub>。

* 生成的Fe(OH)<sub>2</sub>在溶液中容易被[[氧化]]为[[氢氧化铁]]。

<math>4Fe{{\left( OH \right)}_{2}}+{{O}_{2}}+2{{H}_{2}}O = 4Fe{{\left( OH \right)}_{3}}</math>

静置一段时间后，震荡试管，溶液中的沉淀将会变为灰绿色，最后变成红褐色的[[氢氧化铁|Fe(OH)<sub>3</sub>]]。

== 参见 ==
* [[绿锈]]
* [[氢氧化铁]]
* [[碱]]

== 参考资料 ==
{{reflist}}
{{Iron compounds}}
{{氢氧化物}}

[[Category:氢氧化物]]
[[Category:二价铁化合物]]
[[Category:铁-氧化合物]]
[[Category:碱]]

[[fr:Hydroxyde de fer]]