Thiosulfuricacid,dipotassiumsalt
potassium thiosulfate
CAS: 10294-66-3
Molecular Formula: K2O3S2
Thiosulfuricacid,dipotassiumsalt - Names and Identifiers
| Name | potassium thiosulfate |
| Synonyms | potassium thiosulfate POTASSIUM HYPOSULFITE POTASSIUM THIOSULFATE potassium thiosulphate PotassiumThiosulfateK2S2O3 dipotassium sulfurothioate Potassium thiosulfate solution Thiosulfuricacid,dipotassiumsalt thiosulfuricacid(h2s2o3),dipotassiumsalt |
| CAS | 10294-66-3 |
| EINECS | 233-666-8 |
| InChI | InChI=1/2K.H2O3S2.H2O/c;;1-5(2,3)4;/h;;(H2,1,2,3,4);1H2/q2*+1;;/p-2 |
Thiosulfuricacid,dipotassiumsalt - Physico-chemical Properties
| Molecular Formula | K2O3S2 |
| Molar Mass | 190.32 |
| Density | 1.484g/mLat 25°C |
| Water Solubility | g/100g H2O: 96.1 (0°C), 165.0 (25°C), 312.0 (90°C); solid phase, K2S2O3 · 2H2O (0°C), 3K2S2O3 ·5H2O (25°C), K2S2O3(90°C) [KRU93]; insoluble alcohol [MER06] |
| Appearance | White powder or block |
| Merck | 13,7777 |
| Storage Condition | Room Temprature |
| Stability | Stable. Incompatible with strong acids, strong oxidizing agents. |
| MDL | MFCD00150405 |
| Physical and Chemical Properties | 3K2S2O3-5H2O = 661.07, colorless orthorhombic crystal. When heated without melting is decomposed into potassium sulfide and potassium sulfate. Soluble in water, the aqueous solution is weak alkaline. In case of acid, sulfur dioxide is released by decomposition. (2) K2S2O3 · 1/2H2O = 196.34, colorless monoclinic deliquescent crystal. The relative density of 2.590 (anhydrous 2.23),200 deg C when the loss of crystal water, continue to heat the decomposition. Soluble in water, insoluble in ethanol. Reductive. It is prepared by coboiling potassium sulfite with sulfur. |
| Use | Used as analytical reagents and reducing agents, also used in the pharmaceutical industry |
Thiosulfuricacid,dipotassiumsalt - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | 36/38 - Irritating to eyes and skin. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. |
| WGK Germany | 3 |
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