查看“︁次硫酸”︁的源代码

{{NoteTA|G1=Chemistry}}
{{chembox
| Watchedfields = changed
| verifiedrevid = 
| Name =
| ImageFile = Sulfanediol-3D-balls.png
| ImageSize = 200px
| ImageName = 3D ball model of sulfoxylic acid
| OtherNames = 氢氧化硫
|Section1={{Chembox Identifiers
| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}
| ChemSpiderID = 4574173
| InChI = 1S/H2O2S/c1-3-2/h1-2H
| InChIKey = HRKQOINLCJTGBK-UHFFFAOYSA-N
| SMILES = OSO
| StdInChI_Ref = 
| StdInChI = 
| StdInChIKey_Ref = 
| StdInChIKey = 
| CASNo =  20196-46-7
| CASNo_Ref = {{cascite|correct|CAS}}
| Gmelin = 1452
| UNII_Ref = 
| UNII = 
| PubChem = 5460696
| RTECS = 
| ChEBI = 33536
  }}
|Section2={{Chembox Properties
| Formula = S(OH)<sub>2</sub>
| Appearance = 
| Odor = 
| S=1 | O=2 | H=2
| Density = 
| Solubility = 
| Solubility1 = 
| Solvent1 = 
| MeltingPtC = 
| MeltingPt_notes = 
| BoilingPt = 
| ConjugateBase = Bisulfoxylate (chemical formula SO<sub>2</sub>H<sup>−</sup>)
  }}
|Section7={{Chembox Hazards
| ExternalSDS = 
| RPhrases = 
| SPhrases = 
| NFPA-H = 
| NFPA-F = 
| NFPA-R =
| NFPA-S = 
 }}
|Section8={{Chembox Related
| OtherFunctn_label = 等电子体 
| OtherFunctn= [[过三氧化氢]]<br/>[[三硫化氢]]
| OtherCpds = HOSO<sub>2</sub><br/>[[亚磺酸]]<br/>[[硫氧化氢]] HSOH<br/>[[连二次硫酸]] HOSSOH
 }}
}}
'''次硫酸'''（H<sub>2</sub>S</sub>O<sub>2</sub>）是一种极不稳定的无机酸，目前只制得了次硫酸盐<ref>{{Greenwood&Earnshaw}}</ref>。

金属锌与[[硫酰氯]]在[[乙醚]]中反应可制得次硫酸锌：
:<math>\rm \ 2Zn + SO_2Cl_2 \rightarrow ZnSO_2 + ZnCl_2</math>

[[乙酸钴]]与[[连二亚硫酸钠]]溶液作用，再加入过量的[[氨]]，然后通[[二氧化碳]]至饱和，可以制得棕色的次硫酸钴晶体<ref>{{cite book|title=《无机化学丛书》第五卷：氧、硫、硒分族|pages=P193|author=张青莲|isbn=7-03-002238-6|location=北京|publisher=科学出版社}}</ref>。
:<math>\rm \ Co(CH_3COO)_2 + Na_2S_2O_4 \rightarrow CoS_2O_4 + 2CH_3COONa</math>
:<math>\rm \ CoS_2O_4 + 2NH_3 + H_2O \rightarrow CoSO_2 + (NH_4)_2SO_3</math>

== 参考资料 ==
{{reflist}}

{{硫化合物}}
{{氢化合物}}

[[Category:硫含氧酸]]
[[Category:二价硫化合物]]