查看“︁硫代硫酸铵”︁的源代码

{{Unreferenced|time=2022-02-04T12:24:43+00:00}}
{{Chembox
|   Name = 硫代硫酸铵
| ImageFile      = AmmonS2O3.svg
| ImageFile1     = Ammonium-thiosulfate-3D-vdW.png
|   IUPACName =Ammonium thiosulfate
|   OtherNames = 
| Section1 = {{Chembox Identifiers
| CASNo1 = 7783-18-8
| CASNo1_Ref = {{cascite|correct|CAS}}
|    SMILES  =  
|    RTECS  =  
|  StdInChI_Ref  = {{stdinchicite|correct|chemspider}}|  StdInChI  =  1S/2H3N.H2O3S2/c;;1-5(2,3)4/h2*1H3;(H2,1,2,3,4)
|  StdInChIKey_Ref  = {{stdinchicite|correct|chemspider}}|  StdInChIKey  =  XYXNTHIYBIDHGM-UHFFFAOYSA-N
|  PubChem  =  6096946
|  ChemSpiderID_Ref  = {{chemspidercite|correct|chemspider}}|  ChemSpiderID  =  4807475
|  InChI  =  InChI=1S/2H3N.H2O3S2/c;;1-5(2,3)4/h2*1H3;(H2,1,2,3,4)
}}
| Section2 = {{Chembox Properties
|   Formula = (NH<sub>4</sub>)<sub>2</sub>S<sub>2</sub>O<sub>3</sub>
|   MolarMass = 148.20
|   Appearance = 白色单斜结晶
|   Density =1.679
|   Solubility = 
|   MeltingPt =150℃(分解) 
|   BoilingPt =
|   pKa = 
|   pKb = 
|   Viscosity = 
  }}
| Section3 = {{Chembox Structure
|   MolShape = 
|   Coordination = 
|   CrystalStruct =[[单斜晶系]]
|   Dipole =
  }}
| Section7 = {{Chembox Hazards
|   ExternalMSDS =
|   MainHazards = 
|   FlashPt = ?°C
|   RPhrases = 
|   SPhrases = 
  }}
| Section8 = {{Chembox Related
|   OtherAnions =
|   OtherCations =
|   OtherCpds = 
  }}
}}
'''硫代硫酸銨'''，[[分子式]]為{{化學式|銨|2|硫|2|氧|3}}，是[[硫代硫酸鹽]]的一種。

==性质==
一種有强烈吸湿性的白色斜方结晶，加熱至150℃會分解成[[亚硫酸铵]]、[[硫黄]]、[[氨]]、[[硫化氢]]及[[水]]。极易溶于水，不溶于[[醇]]和[[醚]]，微溶于[[丙酮]]。在空气中不稳定，在[[氨气]]中稳定。

==制法==
[[碳酸氢铵]]与[[二氧化硫]]和水作用产生[[亚硫酸铵]]，经过滤除去杂质后再与[[硫黄]]加热煮沸反应，再经过滤、蒸发、冷却结晶和离心分离，得到硫代硫酸铵成品。
:<math>\rm \ 2NH_4HCO_3+SO_2+H_2O\rightarrow (NH_4)_2SO_3+2H_2O+2CO_2\uparrow</math>
:<math>\rm \ (NH_4)_2SO_3+S\rightarrow (NH_4)_2S_2O_3</math>

==用途==
感光工业中用作照相定影剂，用于替代[[硫代硫酸钠]]，具有水洗时间短和银容易回收的优点，且较钠盐更易溶解卤化银的乳膜。在医药上用作杀菌剂、分析试剂。

{{無機化合物小作品}}
[[Category:銨鹽]]
[[Category:硫代硫酸盐]]
[[Category:化學肥料]]