| Identification | Back Directory | [Name]
POTASSIUM TETRATHIONATE | [CAS]
13932-13-3 | [Synonyms]
POTASSIUM TETRATHION
POTASSIUM TETRATHIONATE
dipotassiumtetrathionate
Tetrathionicacid,dipotassiumsalt
Tetrathionic acid, potassium salt (1:2) | [EINECS(EC#)]
237-702-3 | [Molecular Formula]
K2O6S4 | [MDL Number]
MFCD00079233 | [MOL File]
13932-13-3.mol | [Molecular Weight]
302.45 |
| Chemical Properties | Back Directory | [bulk density]
770kg/m3 | [density ]
2.96 g/mL at 25 °C(lit.)
| [storage temp. ]
2-8°C
| [solubility ]
232g/l | [form ]
solid | [Appearance]
Off-white to yellow Solid | [Water Solubility ]
232g/L | [Cosmetics Ingredients Functions]
REDUCING | [InChI]
InChI=1S/2K.H2O6S4/c;;1-9(2,3)7-8-10(4,5)6/h;;(H,1,2,3)(H,4,5,6)/q2*+1;/p-2 | [InChIKey]
UVTKHPSJNFFIDG-UHFFFAOYSA-L | [SMILES]
S([O-])(=O)(=O)SSS([O-])(=O)=O.[K+].[K+] | [EPA Substance Registry System]
Potassium tetrathionate (13932-13-3) |
| Hazard Information | Back Directory | [Uses]
Used in the preparation of tetrathionate hydrolase assay from Acidithiobacillus caldus, it acts as an energy source. | [Definition]
ChEBI: A potassium salt composed of potassium and tetrathionate ions in a 2:1 ratio. | [Preparation]
Potassium tetrathionate is prepared by a similar reaction—the reaction of S2Cl2 with sulphurous acid, followed by KOH neutralization, as shown by the equations.
2H2S03 + S2C12->H2S406+2HCl
H2S406+2KOH -> K2S406 + 2H2O or by the reaction of iodine with K2S2O3.
2K2S203 + I2 -> K2S406+2KI.
The reaction is carried out in an ethanol-water mixture, a medium in which the potassium tetrathionate is insoluble; the K2S406 precipitates as colorless shiny platelets. | [General Description]
The crystal structure of potassium tetrathionate is monoclinic with a=22.081o, b=7.991o, c=10.108o |
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Sigma-Aldrich
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