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RUBIDIUM

RUBIDIUM Suppliers list
Company Name: Mainchem Co., Ltd.
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Products Intro: Product Name:RUBIDIUM
CAS:7440-17-7
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Products Intro: Product Name:Rubidium (99+%) (prescored ampoule)
CAS:7440-17-7
Purity:(99+%) Package:1g;5g
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Products Intro: Product Name:RubidiuM
CAS:7440-17-7
Purity:99.9% Remarks:AAM126875
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Products Intro: Product Name:RubidiuM, 99.75% (Metals basis)
CAS:7440-17-7
Package:1g Remarks:044214
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Products Intro: Product Name:RubidiuM, 99.75% (Metals basis)
CAS:7440-17-7
Purity:99.75%(Metalsbasis) Package:1g,25g,5g
RUBIDIUM Basic information
Physical Properties History and Occurrence Uses Reactions Hazard
Product Name:RUBIDIUM
Synonyms:Rubidium,99.75%(metalsbasis);RUBIDIUM: 99.9%;Rubidium, Breakseal Ampoule 99.8%;Rubidium, AAS standard solution, Specpure(R), Rb 1000μg/ml;Rubidium, plasma standard solution, Specpure(R), Rb 1000μg/ml;Rubidium, plasma standard solution, Specpure(R), Rb 10,000μg/ml;MUELLER HINTON;Rubidium, breakseal ampoule
CAS:7440-17-7
MF:Rb
MW:85.47
EINECS:231-126-6
Product Categories:NitrateAnalytical Standards;Alphabetic;Application CRMs;ICP CRMsSpectroscopy;ICP-OES/-MS;ICPSpectroscopy;Matrix Selection;R;Spectroscopy;Alkali MetalsMetal and Ceramic Science;Metals;Reduction;Rubidium;Synthetic Reagents;metal or element
Mol File:7440-17-7.mol
RUBIDIUM Structure
RUBIDIUM Chemical Properties
Melting point 38-39 °C(lit.)
Boiling point 686 °C(lit.)
density 1.53 g/mL at 25 °C(lit.)
form ingot
color Silver
resistivity11.0 μΩ-cm, 20°C
Water Solubility soluble in acids and alcohol [HAW93]
Sensitive moisture sensitive
Merck 13,8363
CAS DataBase Reference7440-17-7(CAS DataBase Reference)
Safety Information
Hazard Codes Xi,C,F
Risk Statements 36/37/38-36/38-34-14/15
Safety Statements 26-36/37/39-43-45-36
RIDADR UN 2031 8/PG 2
WGK Germany 3
RTECS VL8500000
TSCA Yes
HazardClass 8
PackingGroup III
MSDS Information
ProviderLanguage
SigmaAldrich English
ALFA English
RUBIDIUM Usage And Synthesis
Physical PropertiesSilvery-white metal; body-centered cubic crystals; ductile; soft and very light (the fourth lightest metallic element); Mohs hardness 0.3; density 1.522 g/cm3 at 18°C; melts at 39.3°C; density of the liquid metal 1.472 g/mL at 39°C; vaporizes at 689°C producing a blue vapor; vapor pressure 1 torr at 294°C and 10 torr at 387°C; electrical resistivity 11.6 microhm-cm at 0°C and 13.1 mirohm-cm at 25°C; viscosity 0.484 centipoise at 100°C; magnetic susceptibility 0.09×10–6 cgs units at 18°C; thermal neutron absorption cross section 0.73 barns; reacts violently with water.
History and OccurrenceRubidium was discovered in 1861 by Kirchoff and Bunsen. They observed new lines in the dark red spectral region of a sample extract of mineral lepidolite. The element got its name from the Latin word rubidus, which means dark red. Bunsen later succeeded in preparing metallic rubidium in low yield by heating rubidium hydrogen tartrate with carbon. The metal was obtained in higher yield by Hevesy and later by Beketov, Hevesy electrolyzing a melt of rubidium hydroxide and Beketov reducing the hydroxide with aluminum at red heat.
Rubidium is widely distributed in nature. Its abundance in the earth’s crust is estimated to be 90 mg/kg. Rubidium occurs at trace levels in many potassium minerals. Often it is associated with cesium. Some rubidium-containing minerals are lepidolite, leucite, petalite, feldspars, pollucite, beryl, and amazonite. The metal is never found as a major constituent in any mineral. Rubidium also occurs in many rocks such as basalts, granites and clay shales. Rubidium is found in seawater at an average concentration of 0.12 mg/L.
UsesRubidium metal and its salts have very few commercial applications. They are used in research involving magnetohydrodynamics and thermoionic experiments. Rubidium is used in photocells. The metal also is a getter of oxygen in vacuum tubes. The beta-emitter rubidium –87 is used to determine age of some rocks and minerals. Radioisotopes of rubidium have been used as radioactive tracers to trace the flow of blood in the body. The iodide salt treats goiters. Rubidium salts are in pharmaceuticals as soporifics, sedatives, and for treating epilepsy.
ReactionsRubidium is a highly reactive metal, more reactive than sodium or potassium. Most reactions are similar to sodium or potassium (see Potassium). The metal ignites spontaneously in air forming oxides. It is coated rapidly with a gray-blue oxide film. It forms four oxides, Rb2O, Rb2O2, Rb2O3, and Rb2O4. It reacts violently with water to form rubidium hydroxide, RbOH:
2Rb + 2H2O → 2RbOH + H2
Reaction with dilute mineral acids can proceed with explosive violence, releasing hydrogen.
Rubidium combines with hydrogen and nitrogen forming hydride, RbH and nitride, Rb3N, respectively.
HazardAs a highly reactive metal, its contact with water or acids can produce violent reactions. Skin contact can cause serious burns.
Chemical PropertiesSoft, silvery-white solid. Easily oxidized in air.High heat capacity and heat transfer coefficient. Soluble in acids and alcohol.
HistoryRubidium was discovered in 1861 by Bunsen and Kirchhoff in the mineral lepidolite by use of the spectroscope. The element is much more abundant than was thought several years ago. It is now considered to be the 16th most abundant element in the Earth’s crust. Rubidium occurs in pollucite, carnallite, leucite, and zinnwaldite, which contains traces up to 1%, in the form of the oxide. It is found in lepidolite to the extent of about 1.5%, and is recovered commercially from this source. Potassium minerals, such as those found at Searles Lake, California, and potassium chloride recovered from brines in Michigan also contain the element and are commercial sources. It is also found along with cesium in the extensive deposits of pollucite at Bernic Lake, Manitoba. Rubidium can be liquid at room temperature. It is a soft, silvery-white metallic element of the alkali group and is the second most electropositive and alkaline element. It ignites spontaneously in air and reacts violently in water, setting fire to the liberated hydrogen. As with other alkali metals, it forms amalgams with mercury and it alloys with gold, cesium, sodium, and potassium. It colors a flame yellowish violet. Rubidium metal can be prepared by reducing rubidium chloride with calcium, and by a number of other methods. It must be kept under a dry mineral oil or in a vacuum or inert atmosphere. Thirty-five isotopes and isomers of rubidium are known. Naturally occurring rubidium is made of two isotopes, 85Rb and 87Rb. Rubidium-87 is present to the extent of 27.83% in natural rubidium and is a beta emitter with a half-life of 4.9 × 1010 years. Ordinary rubidium is sufficiently radioactive to expose a photographic film in about 30 to 60 days. Rubidium forms four oxides: Rb2O, Rb2O2, Rb2O3, Rb2O4. Because rubidium can be easily ionized, it has been considered for use in “ion engines” for space vehicles; however, cesium is somewhat more efficient for this purpose. It is also proposed for use as a working fluid for vapor turbines and for use in a thermoelectric generator using the magnetohydrodynamic principle where rubidium ions are formed by heat at high temperature and passed through a magnetic field. These conduct electricity and act like an armature of a generator thereby generating an electric current. Rubidium is used as a getter in vacuum tubes and as a photocell component. It has been used in making special glasses. RbAg4I5 is important, as it has the highest room-temperature conductivity of any known ionic crystal. At 20°C its conductivity is about the same as dilute sulfuric acid. This suggests use in thin film batteries and other applications. The present cost in small quantities is about $50/g (99.8% pure).
UsesIn making rubidium salts; as a reagent in making zeolite catalysts; in photoelectric cells.
DefinitionMetallic element of atomic num- ber 37, group IA of the periodic table, aw 85.4678, valence = 1. One stable form, principal natural radioactive isotope is rubidium-87. It is the sec- ond most electropositive and the second most alka- line element, has low
General DescriptionA soft silvery metal. Shipped in very limited quantities sealed in a copper tube and over packed in a wooden box. Used in electronics.
Air & Water ReactionsTarnishes rapidly upon exposure to air. Reacts violently with water to form corrosive RUBIDIUM hydroxide and hydrogen, a flammable gas. The heat of the reaction usually ignites the hydrogen.
Reactivity ProfileRUBIDIUM METAL is a strong reducing agent. Burns spontaneously in dry oxygen [Mellor 2:468 1946-47]. Readily catches fire in air when molten or with a sulfur vapor [Mellor 2: 469 1946-47]. Causes explosive decomposition of maleic anhydride. [Chem Safety Data Sheet SD-88 1962; Chem. Haz. Info. Series C-71 1960] Burns in chlorine [Mellor 2, Supp. 1:380 1956]. Interaction with mercury is exothermic and may be violent, [Mellor, 1941, Vol. 2, 469].
HazardReacts vigorously with air and water, must be stored under kerosene or similar liquid, danger- ous fire and explosion risk. Metal causes serious skin burns.
Health HazardInhalation or contact with vapors, substance or decomposition products may cause severe injury or death. May produce corrosive solutions on contact with water. Fire will produce irritating, corrosive and/or toxic gases. Runoff from fire control may cause pollution.
Fire HazardProduce flammable gases on contact with water. May ignite on contact with water or moist air. Some react vigorously or explosively on contact with water. May be ignited by heat, sparks or flames. May re-ignite after fire is extinguished. Some are transported in highly flammable liquids. Runoff may create fire or explosion hazard.
Safety ProfileModerately toxic by intraperitoneal route. A very reactive alkali metal (more reactive than potassium or cesium). In the body, rubidlum substitutes for potassium as an intracellular ion. The ratio of Rb/K intake is important in the toxicology of rubidium. A ratio above 40% is dangerous. In rats, a failure to gain weight is the first symptom, followed by ataxia and hyperirritabhty. Symptoms include: skin ulcers, poor hair coat, sensitivity, and extreme nervousness leading to convulsions and death. hazard when exposed to heat or flame or by chemical reaction with oxidlzers. Igmtes on contact with air, oxygen, and halogens. A very dangerous fire and explosion RUBIDIUM HYDROXIDE RPZOOO 121 5 Ignites spontaneously on contact with water. Reaction with water, moisture, or steam forms explosive hydrogen gas, whch then ignites. Explodes in contact with liquid bromine. Can react explosively with air, halogens, mercury, nonmetals, vanadium chloride oxide, moisture, acids, oxidizers. Violent reaction with vanadium trichloride oxide (at 60℃C), Cl202, P. Molten rubidium ignites in sulfur vapor and reacts vigorously with carbon. RbOH is more basic than KOH. Storage and handling: Keep under benzene, petroleum, or other liquids not containing gaseous O2. When heated to decomposition it emits toxic fumes of RbzO. See also SODIUM and SODIUM POTASSIUM ALLOY.
RUBIDIUM Preparation Products And Raw materials
Tag:RUBIDIUM(7440-17-7) Related Product Information
aluminium rubidium bis(sulphate) RUBIDIUM METAL IN BREAKSEAL AMPOULE 99.5+% rubidium tri-mu-iododiiodotetraargentate RUBIDIUM-87 CHLORIDE (87RB, 98%) rubidium 5-oxo-DL-prolinate 2,4-PENTANEDIONE, RUBIDIUM DERIVATIVE,(pentane-2,4-dionato-O,O')rubidium RUBIDIUM BROMIDE, 99.7%,RUBIDIUM BROMIDE (99%-RB) RUBIDIUM SELENITE RUBIDIUM SULFATE, 99.8%,RUBIDIUM SULFATE, 99.99+% RUBIDIUM NITRATE, 99.99%,RUBIDIUM NITRATE, 99.7%,RUBIDIUM ATOMIC SPECTROSCOPY STAND. SOL. FLUKA, IN NITRIC AC,RUBIDIUM NITRATE, PURATRONIC, 99.975% (METALS BASIS) RUBIDIUM HYDROXIDE, 99.9%, CA. 50 WT. % SOLUTION IN WATER,RUBIDIUM HYDROXIDE, 99%, 50 WT. % SOLUTI ON IN WATER RUBIDIUM ACETATE, 99.8% (METALS BASIS),RUBIDIUM ACETATE, 99.8+%,RUBIDIUM ACETATE 98% RUBIDIUM SELENATE RUBIDIUM DICHROMATE Rubidium carbonate, 99.8% metals basis RUBIDIUM FLUORIDE, 99.8%,RUBIDIUM FLUORIDE ANHYDROUS (99.8%-RB) RUBIDIUM CHLORATE RUBIDIUM IODIDE, 99.9%