RUBIDIUM SULFATE REAGENT
Rubidium sulfate
CAS: 7488-54-2
Molecular Formula: O4Rb2S
RUBIDIUM SULFATE REAGENT - Names and Identifiers
| Name | Rubidium sulfate |
| Synonyms | Rubidium sulfate rubidium sulphate dirubidium sulfate RUBIDIUM SULFATE REAGENT Rubidium sulfate whitextl rubidium sulfate, puratronic sulfuric acid, monorubidium salt |
| CAS | 7488-54-2 |
| EINECS | 231-301-7 |
| InChI | InChI=1/H2O4S.Rb/c1-5(2,3)4;/h(H2,1,2,3,4) |
RUBIDIUM SULFATE REAGENT - Physico-chemical Properties
| Molecular Formula | O4Rb2S |
| Molar Mass | 267 |
| Density | 3.613 g/mL at 25 °C (lit.) |
| Melting Point | 1050 °C |
| Boling Point | 1700 °C |
| Water Solubility | soluble |
| Solubility | Soluble in water (424 mg/ml at 10 °C). |
| Appearance | crystal |
| Specific Gravity | 3.613 |
| Color | white |
| Storage Condition | Sealed storage |
| Sensitive | Easily absorbing moisture |
| Refractive Index | 1.513 |
| MDL | MFCD00011190 |
| Physical and Chemical Properties | Colorless orthogonal or hexagonal crystals. The specific gravity was 3.613. Melting point 1060 °c. Boiling point 1700 °c. Soluble in water, insoluble in acetone. Easily with aluminum, chromium, gallium, indium and ferric iron and other metal sulfate formation of alum. By the action of aluminum rubidium alum and barium hydroxide solution, the aluminum hydroxide and barium sulfate precipitates were removed by filtration, and then the solution was concentrated by evaporation. |
| Use | Raw materials for the preparation of metal rubidium and various rubidium salts, catalysts, miniature high-energy batteries and crystal scintillation counters. |
RUBIDIUM SULFATE REAGENT - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S37/39 - Wear suitable gloves and eye/face protection |
| WGK Germany | 2 |
| RTECS | WS8350000 |
| TSCA | Yes |
| HS Code | 28332980 |
RUBIDIUM SULFATE REAGENT - Reference Information
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Introduction | Rubidium sulfate (Rubidium sulfate) is a sulfate, chemical formula Rb2SO4. White crystalline powder, soluble in water. Because of its unique properties, rubidium plays an important role in many high-tech fields such as aerospace, atomic energy, biology and energy, the extraction, separation and industrial production of rubidium have also become a hot research topic. |
| Application example | CN201310585617 reports an organic electroluminescent device, including an anode, a hole injection layer, A hole transport layer, a light-emitting layer, an electron transport layer, an electron injection layer, and a cathode, wherein the electron injection layer is composed of a compound-doped layer of rubidium and an electron transport material-doped layer, the rubidium compound-doped layer comprises a rubidium compound material and a passivation material doped in the rubidium compound material, the rubidium compound material being selected from the group consisting of Rubidium carbonate, rubidium chloride, at least one of Rubidium nitrate and rubidium sulfate, wherein the passivation material layer is at least one selected from the group consisting of silicon dioxide, aluminum oxide, nickel oxide and copper oxide, the electron transport material doping layer comprises an electron transport material and a compound of copper doped in the electron transport material, wherein the compound material of copper is selected from the group consisting of cuprous iodide, cuprous oxide, at least one of copper phthalocyanine and copper oxide. |
| preparation | A preparation method of rubidium sulfate, the steps are as follows: grinding activation: weigh 200g of coarse crushed Lepidolite (the particle size is controlled to be less than 80 mesh), add 2 times the mass of lepidolite in water for pulping, and add 2.5% polyethylene glycol of the weight of the above slurry to the slurries after pulping, then, the above materials are subjected to wet ultra-fine grinding in a ball mill for 8 hours to obtain a fine abrasive a; Ultrasonic acidification leaching: a sulfuric acid solution with a concentration of 35wt% is added to the fine abrasive a, the fine abrasive and sulfuric acid solution are mixed evenly according to the mass ratio of 1:5, and the leaching is carried out under the condition of ultrasonic wave. The ultrasonic power is set to 100W ~ 150W, and the ultrasonic frequency is 20kHz ~ 28kHz, the temperature is 70 ℃, the leaching time is 10min, and the residue and filtrate are obtained by filtration after the leaching is completed. The residue is washed twice with a small amount of water and then discarded, combine the water wash to the filtrate to obtain leaching solution B; Alkaline removal: add 15wt% NaOH solution to the leaching solution B, adjust the pH of the solution to 10~12, Then add 0.2‰ activated carbon of the mass of the solution to the solution, stir the reaction for 10~30min to remove impurity, and filter to obtain impurity removal liquid c after the reaction is completed; Neutralization and concentration: add 98WT% H2SO4 to the impurity removal solution c, adjust the pH of the solution to 6~7, and then concentrate the solution by evaporation to 45% ~ 55% of the original solution volume, natural cooling to room temperature to obtain concentrated liquid d; Secondary impurity removal: the concentrated liquid d is frozen to -10 ℃ to precipitate sodium, potassium, rubidium and cesium alum, and the mother Liquid e and lithium slag f are obtained by filtration and separation; pretreatment: take lithium sediment waste residue f and add 3 times the mass of water at 70 ℃ to be completely dissolved, cool to room temperature and filter, the filtrate is adjusted by 1mol/L NaOH pH 11 to obtain mixed liquid g; cesium rubidium separation: t-BAMBP as extractant, with 260# solvent naphtha as diluent to extract cesium in mixture g, t-BAMBP and 260# volume ratio of 1:5, the organic phase and aqueous phase flow ratio is 6:1, the contact time is 10min, the extraction stage is 10; The washing liquid is deionized water, the organic phase and the aqueous phase flow ratio is 7:3, The washing stage is 10; The reverse extraction is carried out by using 25wt% sulfuric acid, the flow ratio of organic phase to aqueous phase is 1:6, the contact time is 10min, the reverse extraction stage is 4, in the reverse extraction solution, Cs is 62.4g/L,Rb is 0.03g/L,K is 0.006g/L. After evaporation and crystallization, the reverse extraction solution is calcined at 500 ℃ for 2.5h, A Cs2SO4 product was obtained with a product purity of 99.93%. Separation of rubidium and potassium: the remaining phase after cesium extraction is the raw material liquid for rubidium extraction, with t-BAMBP as extractant and n-hexane as diluent, and the volume ratio of t-BAMBP to n-hexane is 1:6, the extraction flow ratio is 1:4, the contact time is 10min, the extraction stage is 8; The washing liquid is deionized water, the organic phase and the aqueous phase flow ratio is 3:1, the series is 7; The rubidium is back-extracted with 25wt% sulfuric acid, the flow ratio of organic phase to aqueous phase is 12:1, the contact time is 10min, The reverse extraction stage is 3, Rb81g/L,Cs 0.010g/L,K0.45g/L in reverse extraction solution, after evaporation, crystallization, calcination at 500 ℃ for 2.5h, the product Rb2SO4 was obtained with a purity of 99.95%. |
| solubility in water (g/100ml) | grams dissolved per 100ml of water at different temperatures (℃): 37.5g/0 ℃;42.6g/10 ℃;48.1g/20 ℃;53.6g/30 ℃;58.5g/40 ℃; 67.5g/60 ℃;75.1g/80 ℃;78.6g/90 ℃;81.8g/100 ℃ |
Last Update：2024-04-10 22:29:15
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