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Cesium Product Information for Molecular Biology

CAT No C1217 Applicaton Molecular biology Grade BioUltra Storage Room Temperature CAS Number: 10294‐54‐9 Melting Point: 1019°C

Formula: Cs2O4S pKa: Formula Weight: 361.87 sulfate;Caesiumsulfate;Cesium sulfate, II;Cs SO ;Dicesium sulfate;dicesiumsulfate;Sulfuric acid, Synonym: 2 4 dicesium ;Sulfuricacid,dicesiumsalt.

Suitability: Density gradient centrifugation of proteoglycans; Preparative density gradient centrifugation of DNA and RNA in cesium sulfate‐urea Cesium salts are used as mediums of density gradient centrifugation for DNA recovery and purification (high purity of cesium chloride, cesium sulfate, cesium trifluoroacetate) and as metal oxide catalyst enhancer for heterogeneous processes due to their ability to lower down high oxidation states of transition metal oxo anions. Some salts ( cesium bromide, iodide and fluoride) are used in scintillation counters and infrared spectroscopies as they absorb x‐rays, gamma and particle radiation, and emit visible light. Industrial application of cesium salts includue manufacturing specialty glasses (Surface exchange with cesium salts improves corrosion or breakage resistances of glasses ) and in photoelectric cells, in optical instruments, for photosensitive deposit on cathodes and in filaments of electron tubes to increase sensitivity (cesium chlorite, carbonate, sulfate, nitrate, perchlorate). Cesium chloride is used in titanium dioxide manufacturing. They are used as components for propellants and drilling grouts. Cesium sulfate and fluoride are used for brewing and in mineral waters. Cesium Hydroxide is used as electrolyte in alkaline batteries at subzero temperatures, color photography and as a catalyst in organic synthesis. Specification product line BioUltra Cr: ≤5 assay ≥99.0% (T) Cu: ≤5 impurities insoluble matter, passes filter test Fe: ≤5 ≤0.001% total nitrogen (N) K: ≤50 loss ≤0.1% loss on drying, 110 °C Li: ≤5 pH 6.0‐7.5 (25 °C, 2 M in H2O) Mg: ≤5 mp 1019 °C(lit.) Mn: ≤5 H2O: soluble2 M at 20 °C, clear, colorless Mo: ≤5 density 4.243 g/mL at 25 °C(lit.) Na: ≤50 anion traces (ppm) chloride (Cl‐): ≤10 Ni: ≤5 cation traces (ppm) Al: ≤5 Pb: ≤5 As: ≤0.1 Sr: ≤5 Ba: ≤5 Zn: ≤5 Bi: ≤5 λ 2 M in H2O Ca: ≤10 UV λ: 260 nm Amax: ≤0.020 Cd: ≤5 λ: 280 nm Amax: ≤0.020 Co: ≤5

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