-
Name
Potassium thiosulfate
- EINECS 233-666-8
- CAS No. 10294-66-3
- Density 1.484 g/mL at 25 °C
- Solubility
- Melting Point
- Formula K2O3S2
- Boiling Point
- Molecular Weight 190.32
- Flash Point
- Transport Information
- Appearance white crystalline powder
- Safety 26-36
- Risk Codes 36/38
-
Molecular Structure
-
Hazard Symbols
Xi
- Synonyms Potassiumthiosulfate (K2S2O3) (6CI,7CI);Thiosulfuric acid (H2S2O3), dipotassium salt(9CI);Thiosulfuric acid, dipotassium salt (8CI);Thiosulfuric acid(H2S2O3), potassium salt (1:2);
- PSA 103.66000
- LogP 0.50980
Potassium thiosulfate Chemical Properties
Molecular structure of Potassium thiosulphate (CAS NO.10294-66-3):
Molecular Weight: 190.3248 g/mol
Molecular Formula: K2O3S2
Density: 1.484 g/mL at 25 °C
Stability: Stable. Incompatible with strong acids, strong oxidizing agents.
H-Bond Acceptor: 3
Exact Mass: 189.856299
MonoIsotopic Mass: 189.856299
Topological Polar Surface Area: 63.2
Heavy Atom Count: 7
Canonical SMILES: [O-]S(=O)(=S)[O-].[K+].[K+]
InChI: InChI=1S/2K.H2O3S2/c;;1-5(2,3)4/h;;(H2,1,2,3,4)/q2*+1;/p-2
InChIKey: FGRVOLIFQGXPCT-UHFFFAOYSA-L
EINECS: 233-666-8
Product Categories: Inorganics;Inorganic Salts;Potassium;Synthetic Reagents
Potassium thiosulfate Uses
Potassium thiosulphate (CAS NO.10294-66-3) is used as analytical reagent and reducing agent, but also for the pharmaceutical industry.
Potassium thiosulfate Consensus Reports
Reported in EPA TSCA Inventory.
Potassium thiosulfate Safety Profile
When heated to decomposition it emits toxic fumes of SOx and K2O.
Hazard Codes of Potassium thiosulphate (CAS NO.10294-66-3): 
Xi
Risk Statements: 36/38
36/38: Irritating to eyes and skin
Safety Statements: 26-36
26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
36: Wear suitable protective clothing
Potassium thiosulfate Specification
Potassium thiosulphate (CAS NO.10294-66-3) is also named as Thiosulfuric acid (H2S2O3), dipotassium salt ; Thiosulfuric acid (H2S2O3), potassium salt (1:2) . It is white crystalline powder.
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