Editing Potassium tetraiodomercurate(II) (section)

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| verifiedrevid = 439640770
| Name = 
| ImageFile = Potassium tetraiodomercurate(II).png
| ImageName = 
| ImageFile1 = Potassium tetraiodomercurate(II)-3D-vdW.png
| ImageSize1 = 
| IUPACName = potassium tetraiodidomercurate(II)
| OtherNames = potassium mercuric iodide, <br> Nessler's reagent (principal component)
| SystematicName = 
| Section1 = {{Chembox Identifiers
| CASNo_Ref = {{cascite|correct|??}}
| CASNo = 7783-33-7
| UNII_Ref = {{fdacite|correct|FDA}}
| UNII = 7N83S6IU0F
| EINECS = 231-990-4
| RTECS = 
| UNNumber = 3287
| PubChem = 15980736
| ChemSpiderID_Ref = {{chemspidercite|changed|chemspider}}
| ChemSpiderID = 22948
| ChEBI_Ref = {{ebicite|changed|EBI}}
| ChEBI = 51568
| StdInChI_Ref = {{stdinchicite|changed|chemspider}}
| StdInChI = 1S/Hg.4HI.2K/h;4*1H;;/q+2;;;;;2*+1/p-4
| StdInChIKey_Ref = {{stdinchicite|changed|chemspider}}
| StdInChIKey = OPCMAZHMYZRPID-UHFFFAOYSA-J
| SMILES = [K+].[K+].I[Hg-2](I)(I)I
  }}
| Section2 = {{Chembox Properties
| Formula = {{chem2|K2[HgI4]}}<ref name=crc>{{CRC90|page=4-82}}</ref>
| K=2|Hg=1|I=4
| Appearance = yellow crystals
| Odor = odorless
| Density = 4.29 g/cm<sup>3</sup>
| Solubility = very soluble
| SolubleOther = soluble in [[ethanol|alcohol]], [[diethyl ether|ether]], [[acetone]]
| BoilingPtC = 
| pKa = 
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| Section3 = 
| Section4 = 
| Section5 = 
| Section6 = 
| Section7 = {{Chembox Hazards
| ExternalSDS = [http://msds.chem.ox.ac.uk/NE/Nesslers_reagent.html External MSDS for Nessler's reagent]
| HPhrases = 
| PPhrases = 
| GHS_ref = 
| NFPA-H = 
| NFPA-F = 
| NFPA-R = 
| NFPA-S =
| FlashPt = 
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| Section8 = {{Chembox Related
| OtherAnions = [[Mercury(II) iodide]]
| OtherCations = 
  }}
}}
'''Potassium tetraiodomercurate(II)''' is an [[inorganic compound]] with the [[chemical formula]] {{chem2|K2[HgI4]|auto=1}}. It consists of [[potassium]] cations and tetraiodomercurate(II) anions. It is the active agent in Nessler's reagent, used for detection of [[ammonia]].<ref>{{VogelQualitative}}
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