Cesium chloride, Molecular Biology Grade
Cesium chloride
CAS: 7647-17-8
Molecular Formula: ClCs
Cesium chloride, Molecular Biology Grade - Names and Identifiers
| Name | Cesium chloride |
| Synonyms | Cesiumchlorid Cesium chloride caesium chloride Cesiumchloridewhitextl I-INOSITOL HIGH PURITY GRADE Cesium Chloride, ULTROL Grade CsiumchloridultrareinnachTrocknung Cesium Chloride, MB Grade (1.01548) LETHEEN MODIFIED BROTH BOTTLE 90 ML Cesium chloride, Molecular Biology Grade Cesium ion chromatography standard solution Fluka |
| CAS | 7647-17-8 |
| EINECS | 231-600-2 |
| InChI | InChI=1/ClH.Cs/h1H;/q;+1/p-1 |
| InChIKey | AIYUHDOJVYHVIT-UHFFFAOYSA-M |
Cesium chloride, Molecular Biology Grade - Physico-chemical Properties
| Molecular Formula | ClCs |
| Molar Mass | 168.36 |
| Density | 3.988 g/cm3 |
| Melting Point | 645 °C (lit.) |
| Boling Point | 1290 °C |
| Flash Point | 1303°C |
| Water Solubility | 1860 g/L (20 ºC) |
| Solubility | H2O: 3M at20°C, clear, colorless |
| Vapor Presure | 33900mmHg at 25°C |
| Vapor Density | 5.8 (vs air) |
| Appearance | White to transparent crystalline powder |
| Specific Gravity | 3.988 |
| Color | White |
| Odor | Odorless |
| Maximum wavelength(λmax) | ['λ: 260 nm Amax: 0.02', , 'λ: 280 nm Amax: 0.02'] |
| Merck | 14,2011 |
| PH | 5.0-7.5 (25℃, 3M in H2O) |
| Storage Condition | Store at +5°C to +30°C. |
| Stability | Stable. Deliquescent. Incompatible with strong oxidizing agents, strong acids. Protect from moisture. |
| Sensitive | Hygroscopic |
| Refractive Index | 1.6418 |
| MDL | MFCD00134037 |
| Physical and Chemical Properties | Density 3.983 melting point 646°C boiling point 1290°C water-soluble 1860g/L (20°C) |
| Use | Used as an analytical reagent |
Cesium chloride, Molecular Biology Grade - Risk and Safety
| Risk Codes | R68 - Possible risk of irreversible effects R36/38 - Irritating to eyes and skin. |
| Safety Description | S36/37 - Wear suitable protective clothing and gloves. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S24/25 - Avoid contact with skin and eyes. |
| UN IDs | 2923 |
| WGK Germany | 2 |
| RTECS | FK9625000 |
| FLUKA BRAND F CODES | 3 |
| TSCA | Yes |
| HS Code | 28273980 |
| Toxicity | LD50 i.p. in rats: 1.5 g/kg (Cochran) |
Cesium chloride, Molecular Biology Grade - Nature
Open Data Verified Data
colorless cubic crystal or white crystalline powder. Deliquescence. Melting point 646 °c; Boiling point 1303 °c; d 3.99. Soluble in water, its solubility (g/loohh2o):162g(O deg C), 259g (90 deg C). Soluble in ethanol, methanol, insoluble in acetone. Hygroscopic deliquescence in air.
Last Update：2024-01-02 23:10:35
Cesium chloride, Molecular Biology Grade - Preparation Method
Open Data Verified Data
hydrochloric acid was added to an aqueous solution of cesium carbonate, heated to boiling, the pH of the solution was adjusted to neutral, filtered, concentrated and dried to obtain cesium chloride.
Last Update：2022-01-01 09:01:31
Cesium chloride, Molecular Biology Grade - Use
Open Data Verified Data
analysis reagent, gas chromatography stationary liquid, for the drop analysis of trivalent chromium and gallium, high temperature chromatography analysis of diphenyl and Terphenyl. For the preparation of metal cesium, cesium salt and as a raw material of cesium single crystal.
Last Update：2022-01-01 09:01:32
Cesium chloride, Molecular Biology Grade - Safety
Open Data Verified Data
rats were intraperitoneally injected with LDso:1.5g/kg. May be due to inhalation, swallow or skin absorption and health hazards. Staff should be protected.
Last Update：2022-01-01 09:01:32
Cesium chloride, Molecular Biology Grade - Reference Information
| pH range of acid-base indicator discoloration | 6.0 - 7.5 |
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| crystal structure | The cesium chloride crystal is a simple cubic crystal. Compounds that adopt this crystal structure include CsCl,CsBr,CsI,TlCl,TlBr, NH4Cl, and the like. |
| solubility in water (g/100ml) | grams dissolved per 100ml of water at different temperatures (℃): 146g/0 ℃;175g/10 ℃;187g/20 ℃;197g/30 ℃;208g/40 ℃; 230g/60 ℃;250g/80 ℃;260g/90 ℃;271g/100 ℃ |
| biological activity | cecum chloride (CsCl) is an inorganic compound, which is widely used in isodense centrifugation to separate various types of DNA, it is also an analytical chemical reagent. |
| Use | used as an analytical reagent cesium chloride is mainly used for the preparation of metal cesium and raw materials containing cesium single crystals, in addition, it is also used for the preparation of conductive glass and analysis reagent, etc. for the preparation of metal cesium and cesium single crystal raw materials; Analysis reagent; For the preparation of conductive glass; solution for the preparation of RNA from DNA by density gradient centrifugation |
| production method | 1. Cesium carbonate was dissolved in a small amount of water. Under constant stirring, hydrochloric acid with a relative density of 1.18 was slowly added, and the reaction was heated. When pH = 3, the solution was boiled for half an hour and Cesium hydroxide was added to bring the pH value of the solution to neutral. Filtration, filtrate evaporation and concentration to a large number of crystallization precipitation, cold to room temperature, separation of mother liquor, clean and 100oC drying, that is the finished product. 2. Cesium chloride was prepared by dissolving cesium carbonate in hydrochloric acid and concentrating the solution. Cesium chloride is usually obtained in a purity of 99.5% and can be used directly. For insufficient purity of cesium chloride, the following methods can be used for purification. 15g of cesium chloride was dissolved in 100ml of water by heating. The stoichiometric amount of 24.2g of mercuric chloride was dissolved in 25mL 4mol of hydrochloric acid. The hgcl_2 HCl solution was added to the above solution while hot, mixed with stirring, and cooled to precipitate CsHgCl3 crystals. The crystals were collected by Suction filtration and the mother liquor was discarded. The crystals were dissolved in 120ml of hot water, and after cooling, crystals were precipitated again. For this reason, recrystallization is repeated for 2 to 3 times, and the alkali metal can be reduced to less than 0.01%. Finally, the crystal is dissolved in hot water, and H2S gas is introduced to saturate the solution, and HgS precipitates and filters out HgS, the filtrate was collected and evaporated to dryness to give pure cesium chloride. 3. Usually can be obtained with a purity of 99% 5% of cesium chloride, can be used directly. For insufficient purity of cesium chloride, the following methods can be used for purification. Purification method 1[166] 15g of cesium chloride was dissolved in of water by heating. The stoichiometric amount of 24.2g of mercuric chloride was dissolved in 25mL 4mol of hydrochloric acid. This HgCl2 and HCl solution was added to the above solution while hot, stirred and mixed, and cooled to precipitate CsHgCl3 crystals. The crystals were collected by Suction filtration and the mother liquor was discarded. The crystals were dissolved in 120ml of hot water, and after cooling, crystals were precipitated again. For this reason, recrystallization is repeated for 2 to 3 times, and the alkali metal can be reduced to less than 0.01%. Finally, the crystal is dissolved in hot water, and H2S gas is introduced to saturate the solution, and HgS precipitates and filters out HgS, the filtrate was collected and evaporated to dryness to give pure cesium chloride. |
| category | toxic substances |
| toxicity grade | poisoning |
| Acute toxicity | oral-rat LD50: 2590 mg/kg; Oral-mouse LD50: 2306 mg/kg |
| explosive hazard characteristics | reaction with BF3 |
| flammability hazard characteristics | toxic chloride fumes from thermal decomposition |
| storage and transportation characteristics | low temperature ventilation and drying |
| extinguishing agent | Water |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 21:54:55
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