Name | Cesium carbonate |
Synonyms | LT-E002 CESIUM CARBONATE Cesium carbonate CAESIUM CARBONATE caesium carbonate Carbonic acid dicesium cesiumcarbonate(cs2co3) cesiumcarbonateanhydrous Carbonicacid,dicesiumsalt Cesium carbonate anhydrous Cesiumcarbonatewhitepowder Cesium carbonate, for analysis |
CAS | 534-17-8 |
EINECS | 208-591-9 |
InChI | InChI=1/CH2O3.2Cs/c2-1(3)4;;/h(H2,2,3,4);;/q;2*+1/p-2 |
InChIKey | FJDQFPXHSGXQBY-UHFFFAOYSA-L |
Molecular Formula | CCs2O3 |
Molar Mass | 325.82 |
Density | 4.072 |
Melting Point | 610 °C (dec.) (lit.) |
Water Solubility | 261 g/100 mL (20 ºC) |
Solubility | Soluble in water |
Vapor Presure | 0Pa at 25℃ |
Appearance | White Powder |
Specific Gravity | 4.072 |
Color | White |
Merck | 14,2010 |
BRN | 4546405 |
Storage Condition | Inert atmosphere,Room Temperature |
Stability | Stable. Very deliquescent. Incompatible with strong oxidizing agents, strong acids. |
Sensitive | Hygroscopic |
MDL | MFCD00010957 |
Use | Used as an analytical reagent |
Risk Codes | R68 - Possible risk of irreversible effects R36/37/38 - Irritating to eyes, respiratory system and skin. |
Safety Description | S22 - Do not breathe dust. S24/25 - Avoid contact with skin and eyes. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S27 - Take off immediately all contaminated clothing. |
WGK Germany | 2 |
RTECS | FK9400000 |
FLUKA BRAND F CODES | 3-10 |
TSCA | Yes |
HS Code | 28369918 |
LogP | 0 at 20℃ |
EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
introduction | cesium carbonate is an inorganic compound. it is a white solid at normal temperature and pressure. it is easily soluble in water and can absorb moisture quickly when placed in the air. The cesium carbonate aqueous solution is strongly alkaline and can react with acid to produce the corresponding cesium salt and water, and release carbon dioxide. Cesium carbonate is easy to transform and can be used as a precursor for other cesium salts. It is widely used in cesium salt varieties. |
application | cesium carbonate can be used as a modified layer between the active layer of a solar cell and the Al electrode to improve the conversion efficiency of the device, generate Al-O-Cs compounds, reduce the series resistance of the cell, improve the short-circuit current and photoelectric conversion efficiency of the solar cell, and due to the compactness of the cesium carbonate layer itself, the stability of the device is also significantly improved. The strong metallic n-type heavy doping effect of cesium in cesium carbonate, the Al/CsCO cathode modified with cesium carbonate nano-interface can greatly improve the electron injection and significantly improve the performance of inverted top-emitting OLED devices. Cesium carbonate is also used as a catalyst for the synthesis of alkyl aryl ethers. |
preparation | the method for preparing cesium carbonate from cesium alum is carried out according to the following steps: in the first step, cesium alum is recrystallized, cesium alum is added into deionized water and heated to dissolve, dissolved, cooled to crystallize and filtered, and refined cesium alum is obtained after filtration; the second step, transformation, add refined cesium alum in deionized water and heat it to dissolve. After dissolving, a refined cesium alum solution is obtained. Lime milk is slowly added dropwise in the refined cesium alum solution, and the cesium sulfate net solution is obtained after solid-liquid separation; the third step, causticization, The barium hydroxide solution is added to the cesium sulfate solution 2 to 3 times, and the barium sulfate solid and caustic solution are obtained by centrifugation; the fourth step, carbonization, concentration and evaporation, pass CO into the caustic solution for carbonization, carbonize until the pH of the carbonized solution is 7 to 10, let it stand, concentrate the carbonized supernatant after standing, and obtain a concentrated solution after cooling; the fifth step, one fine filtration and drying, the concentrated solution is filtered by a polymer filter device, and the filtered filtrate is concentrated and crystallized and dried at low temperature to obtain low temperature material; the sixth step, high temperature decomposition, low temperature material after high temperature decomposition, get the high temperature material; the seventh step, the second fine filtration, the high temperature material is dissolved with deionized water, and then filtered with a polymer filter device, and the filtered net liquid is obtained; the eighth step, the net liquid is concentrated and dried, and the filtered net liquid is concentrated and dried to obtain cesium carbonate. The purity of cesium carbonate obtained by this method is 99.90% to 99.99%; the yield of cesium is 92% to 96%, and the production cost is reduced by 30% to 50% compared with the existing technology. |
Use | Used as analytical reagent Cesium carbonate is generally used as a basic raw material for preparing other cesium salts, and is also used in the fields of catalyst industry, special optical glass industry, petroleum catalytic additives, analytical reagents, ceramic industrial grade and pharmaceutical industry The basic raw material for preparing various cesium salts; used to produce special optical glass; as a petroleum catalytic aid; analytical reagent; promotes the formation of mixed alkyl carbonates through effective O-alkylation of alcohols |
category | toxic substances |
toxicity classification | poisoning |
acute toxicity | oral-rat LD50: 2333 mg/kg; Oral-mouse LD50: 2170 mg/kg |
flammability hazard characteristics | thermal decomposition spicy stimulation smoke |
storage and transportation characteristics | warehouse low temperature ventilation and drying |
fire extinguishing agent | water |