CID 16217543
Tetrathionsaeure · POTASSIUM TETRATHION · Potassium Tetrethionate · Potassium tetrathionate · dipotassiumtetrathionate · Potassium tetrathionate 99%min · Tetrathionicacid,dipotassiumsalt · Tetrathionic acid, potassium salt (1:2)
Identifiers & Physical Properties
| CAS No. | 13932-13-3 |
|---|---|
| Molecular formula | H2KO6S4 |
| Average molar mass | 265.4 g/mol |
| Monoisotopic mass | 264.83712896 g/mol |
| SMILES | O=S(=O)(O)SSS(=O)(=O)O.[K] |
| InChIKey | WLCXUVHORWQORH-UHFFFAOYSA-N |
| PubChem CID | 16217543 |
Chemical & Physical Properties
| Topological polar surface area | 176 |
|---|---|
| Hydrogen bond donors | 2 |
| Hydrogen bond acceptors | 8 |
| Rotatable bonds | 3 |
| Heavy atoms | 11 |
| Formal charge | 0 |
| Complexity | 235 |
| Density | 2.96 g/mL at 25 °C (lit.) |
| Bulk density | 770kg/m3 |
| Storage conditions | 2-8°C |
| Solubility | 232g/l |
| Physical state | solid |
| Appearance | Off-white to yellow Solid |
| Cosmetics Ingredients Functions | REDUCING |
| InChI | InChI=1S/2K.H2O6S4/c1-9(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+] |
| EWG's Food Scores | 1 |
| FDA UNII | 8X6V5C8FZ9 |
| EPA Substance Registry System | Potassium tetrathionate (13932-13-3) |
| UNSPSC Code | 41106212 |
| NACRES | NA.23 |
| GHS pictogram | GHS07 |
| Signal word | Warning |
| GHS hazard statements | H315-H319 |
| GHS precautionary statements | P264-P280-P302+P352-P337+P313-P305+P351+P338-P362+P364-P332+P313 |
| Personal protective equipment (PPE) | dust mask type N95 (US), Eyeshields, Gloves |
| Hazard symbols | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-36-37/39 |
| Water hazard class (WGK) | 3 |
| RTECS number | XF6450000 |
| TSCA inventory status | TSCA listed |
| Customs code | 2842 90 80 |
| Storage class | 11 - Combustible Solids |
| Toxicity | LD50 orally in Rabbit: > 2000 mg/kg |
Safety & Regulations
| Personal protective equipment (PPE) | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK) | 3 |
| TSCA inventory status | TSCA listed |
| RTECS number | XF6450000 |
| Customs code | 2842 90 80 |
| Toxicity | LD50 orally in Rabbit: > 2000 mg/kg |
| Risk statements (R) | 36/37/38 |
| Signal word | Warning |
| GHS pictogram | GHS07 |
| Hazard symbols | Xi |
| Safety statements (S) | 26-36-37/39 |
| Storage class | 11 - Combustible Solids |
| GHS hazard statements | H315-H319 |
| GHS precautionary statements | P264-P280-P302+P352-P337+P313-P305+P351+P338-P362+P364-P332+P313 |
Applications & Uses
Uses
Used in the preparation of tetrathionate hydrolase assay from Acidithiobacillus caldus, it acts as an energy source.
General Description
The crystal structure of potassium tetrathionate is monoclinic with a=22.081o, b=7.991o, c=10.108o
Preparation & Synthesis
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.