Potassium Sodium Tartrate
Specifications
| Item | Index |
| Content ≥% | 98 |
| Chlorie(Cl)≤% | 0.005 |
| Heavy metal(Pb)≤% | 0.001 |
| Sulfate(SO4)≤% | 0.03 |
| Iron(Fe)≤% | 0.002 |
| Arsenic(As)≤% | 0.0002 |
| Reaction of water soiution | qualified |
| Insolude water ≤% | 0.01 |
Packing & Storage
| Packing | in 25kg bag |
| Storage | 20℃, 2 years. |
| Shipping | Room temperature in China; may vary elsewhere |
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General Information
| Common Names | Potassium sodium tartrate | Seignette salt | Rochelle Salt | ||||||
| Structure |  |
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| CAS No. | 304-59-6,6381-59-5 | Boiling Point (℃) | 100 °C | ||||
| Molecular Weight | 282.22 | Melting Point (℃) | 70~80℃ | ||||
| Appearance | White powder | Vapor Specific Gravity | 1.24 g/cm3 | ||||
| HS Code | 2918130000 | Flash Point (℃) | 209.4ºC | ||||
| Solubility | Soluble in water, methanol, propyl alcohol, glycerol and ethanol, insoluble in chloroform | Autoignition Temperature (℃) | |||||
| SYMPTOMS | PREVENTION | FIRST AID | |
| Inhalation | Cough. Sore throat. | Use local exhaust or breathing protection. | Fresh air, rest. |
| Skin | Redness. Burning sensation. Itching. | Protective gloves. | Remove contaminated clothes. Rinse and then wash skin with water and soap. |
| Eyes | Redness. Pain. | Wear safety goggles. | First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. |
| Ingestion | Abdominal pain. Nausea. Vomiting. | Do not eat, drink, or smoke during work. Wash hands before eating. | Rinse mouth. Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Refer for medical attention . |
Potassium sodium tartrate is obtained by neutralizing tartric acid with potassium hydroxide and sodium hydroxide. In the reaction pot fitted with stirring and steam heating tube, add solid alkali, liquid potassium hydroxide, add water to dissolve. Add tartaric acid under heat and stir until the solution pH is 7. Filter while hot, put the filtrate into the crystallizing pot and cool the crystallization. After filtration, washing with water to remove chloride, boiling and drying below 48℃ is finished product
Frequently Asked Questions
Physical and Chemical Properties
Potassium sodium tartrate is a colorless to blue-white orthorhombic crystal, soluble in water, slightly soluble in alcohol, tastes salty and cool, and its aqueous solution is slightly alkaline. It begins to lose crystal water at 60°C, and loses all of its crystal water at 215°C.
Application of Potassium Sodium Tartrate
Its piezoelectric properties can be used to make piezoelectric elements, which are used in receivers and pickups for radio and cable broadcasting. Still, it has the disadvantages of easy decomposition, brittle performance, and easy solubility in water. It is also used for baking powder, medicine, mirror plating and as a chemical reagent.