| Classification: | Lithium Bromide Solution |
|---|---|
| Synonyms: | Lithium Bromide N-Hydrate |
| CAS: | 13453-70-8 |
|
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| Lithium bromide solution |
| Type: Industrial |
| CAS number: 13453-70-8 |
| Specification: 48% - 55% |
| Properties: white or light yellow liquid |
| (1) A colorless liquid with a salty taste and non-toxicity. The solution is pale yellow after adding lithium chromate. |
| (2) The solubility of lithium bromide in water decreases with decreasing temperature. As shown in Figure 1. The curve in the figure is a crystallization line. The points on the curve indicate that the solution is in a saturated state. The upper left of the curve indicates the precipitation of solid lithium bromide crystals, and the lower right indicates that there are no crystals in the solution. The so-called solubility refers to the mass component of the lithium bromide anhydrous compound contained in the saturated liquid, that is, the mass concentration of the lithium bromide aqueous solution. It can be known from the curve in the figure that the mass concentration of lithium bromide should not exceed 66%, otherwise crystals will precipitate when the temperature of the solution decreases during operation, which disrupts the normal operation of the refrigerator. |
| (3) The partial pressure of water vapor is very low, it is much lower than the saturated vapor pressure of pure water at the same temperature, so it has strong hygroscopicity. The balance between liquid and vapor belongs to dynamic equilibrium. At this time, the rate at which molecules cross the surface of the liquid into the vapor is equal to the rate at which the molecules return from the vapor to the liquid. Because the attractiveness of lithium bromide molecules to water molecules in the lithium bromide solution is stronger than that between water molecules, and because the number of water molecules is reduced by the presence of lithium bromide molecules in a unit liquid volume, the liquid at the same temperature The number of water molecules per unit volume of steam on the surface is less than the number of water molecules on the surface of pure water. Because lithium bromide has a high boiling point and does not volatilize in the temperature range used, the total pressure of the vapor in equilibrium with the solution is equal to the pressure of water vapor. It can be seen that the water vapor content on the surface of the lithium bromide solution is equal when the temperature is equal. The pressure is less than the saturated vapor pressure of pure water, and the higher the concentration or the lower the temperature, the lower the partial pressure of water vapor. Figure 2 shows the relationship between the temperature, concentration and pressure of the lithium bromide solution. As can be seen from the figure, when the concentration is 50% and the temperature is 25 ° C, the saturated vapor pressure is 0.85kPa, and the saturated vapor pressure of water at the same temperature is 3.167kPa. If the saturated vapor pressure of water is greater than 0.85kPa, for example, when the pressure is 1kPa (equivalent to a saturation temperature of 7 ° C), the above lithium bromide solution has the ability to absorb it. Capacity, this is one of the mechanisms of the lithium bromide absorption refrigerator. Similarly, if the pressure is the same, the saturation temperature of the solution must be greater than the saturation temperature of water, and the water vapor generated by the solution is always in a superheated state. |
| (4) The density is greater than that of water and varies with the concentration and temperature of the solution. |
| (5) The specific heat capacity is small. When the temperature is 150 ° C and the concentration is 55%, the specific heat capacity is about 2kJ / (kg · K), which means that less heat is added to the solution during the occurrence process, and the characteristic of latent heat of evaporation is relatively large. , Will make the unit have a higher thermal coefficient. |
| (6) The viscosity is large. |
| (7) The surface tension is large. |
| (8) The thermal conductivity of lithium bromide solution decreases with increasing concentration and increases with increasing temperature. |
| (9) It is strongly corrosive to materials such as ferrous metals and copper. It is more serious in the presence of air. The non-condensable gas generated by corrosion has a great impact on the refrigeration capacity of the device. |
| Lithium bromide solution is used as a working medium to produce low-temperature refrigerant water. It is used as a cold source in air-conditioning systems and processes. It can be widely used in industrial and mining enterprises such as textiles, chemicals, electronics, food, and also in hotels, theaters, and hospitals. , Buildings, etc. |
| Product Name | CAS NO. |
| Lithium Oxalate | 533-91-3 |
| Lithium Oxalate | 533-91-3 |
| Lithium Benzoate | 553-54-8 |
| Lithium Acetate | 546-89-4 |
| Lithium Acetate | 6108-17-4 |
| Lithium Iodide | 10377-51-2 |
| Lithium Iodide Trihydrate | 7790-22-9 |
| Lithium Fluoride | 7789-24-4 |
| Lithium Fluoride | 7789-24-4 |
| Lithium Fluoride | 7789-24-4 |
| Lithium Metasilicate | 10102-24-6 |
| Lithium Chromate | 14307-35-8 |
| Lithium Chromate Dihydrate | 7789-01-7 |
| Lithium Perchlorate | 7791-03-9 |
| Anhydrous Lithium Perchlorate | 13453-78-6 |
| Lithium Formate | 556-63-8 |
| Lithium Methoxide | 865-34-9 |
| Lithium Tartrate | 30903-88-9 |
| Lithium Chloride | 7447-41-8 |
| Lithium Chloride | 7447-41-8 |
| Lithium Chloride | 7447-41-8 |
| Lithium Chloride | 7447-41-8 |
| Lithium chloride | 7447-41-8 |
| Lithium Tetrachloroaluminate | 14024-11-4 |
| Lithium Sulfide | 12136-58-2 |
| Lithium Sulfate Monohydrate | 10102-25-7 |
| Lithium Sulfate | 10377-48-7 |
| Lithium Hexafluorophosphate | 21324-40-3 |
| Lithium Molybdate | 13568-40-6 |
| Lithium Phosphate | 10377-52-3 |
| Lithium Dihydrogen Phosphate | 13483-80-0 |
| Trilithium Citrate | 919-16-4 |
| Lithium Borohydride | 16949-15-8 |
| Lithium Metaborate | 13453-69-5 |
| Lithium Metaphosphate | 13762-75-9 |
| Lithium Hydroxide | 1310-65-2 |
| Lithium Acetate | 16853-85-3 |
| Lithium Hydride | 7580-67-8 |
| Lithium Hydroxide | 1310-65-2 |
| Lithium Hydroxide Monohydrate | 1310-66-3 |
| Lithium Hydroxide Monohydrate | 1310-66-3 |
| Lithium Hydroxide Monohydrate | 1310-66-3 |
| Lithium Hydroxide Monohydrate | 1310-66-3 |
| Anhydrous Lithium Lactate | 867-55-0 |
| Lithium Tert-Butoxide | 1907-33-1 |
| Lithium Bisfluorosulfonimide | 171611-11-3 |
| Lithium Bistrifluoromethanesulfonimide | 90076-65-6 |
| Lithium Tetraborate | 12007-60-2 |
| Lithium Tetrafluoroborate | 14283-07-9 |
| Anhydrous Lithium Salicylate | 552-38-5 |
| Lithium Carbonate | 554-13-2 |
| Lithium Carbonate | 554-13-2 |
| Lithium Carbonate | 554-13-2 |
| Lithium Carbonate | 554-13-2 |
| Lithium Carbonate | 17341-24-1 |
| Lithium Nitrate | 7790-69-4 |
| Lithium Nitrate Monohydrate | 7790-69-4 |
| Lithium Bromide | 7550-35-8 |
| Lithium Bromide | 13453-70-8 |
| Lithium Oxide | 12057-24-8 |
| Acetylacetonatolithium | 18115-70-3 |
| Lithium Stearate | 4485-12-5 |
| Isopropanol Lithium Salt | 2388-10-5 |
| Lithium Laurate | 14622-13-0 |
| Lithium Trifluorosulfonate | / |
| Lithium Bromide | 7550-35-8 |
| Lithium Chloride | 7447-41-8 |
| Lithium Hydroxide | 1310-65-2 |
| High Purity Lithium Fluoride | 7789-24-4 |
| Battery Grade Lithium Perchlorate Anhydrous | 7791-03-9 |
| Lithium Hydroxide Dust Free | 1310-66-3 |
| Lithium Iron Phosphate | 15365-14-7 |
| Packing: | 50KGs Iron Drum or 1000KGs Jumb Bag or packing as per request. |
| Storare: | Storing in sealed, dry and cool condition, not exposing to air for long time, avoiding moisture. |
| Characteristics: | Pink powder, slightly soluble in inorganic acid, insoluble in water. |
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