Basic information Physical Properties Uses Preparation Safety Related Supplier
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Rubidium carbonate

Basic information Physical Properties Uses Preparation Safety Related Supplier
Rubidium carbonate Basic information
Rubidium carbonate Chemical Properties
  • Melting point:837 °C
  • Boiling point:decomposes at 740℃ [KIR82]
  • storage temp. Store below +30°C.
  • solubility 4500g/l
  • form Powder
  • color White
  • PH11.7 (50g/l, H2O, 20℃)
  • Water Solubility soluble
  • Sensitive Hygroscopic
  • CAS DataBase Reference584-09-8(CAS DataBase Reference)
  • EPA Substance Registry SystemCarbonic acid, dirubidium salt (584-09-8)
Safety Information
  • Hazard Codes Xi
  • Risk Statements 36/37/38
  • Safety Statements 26-36/37/39-37/39
  • WGK Germany 2
  • RTECS FG0650000
  • 3-10
  • TSCA Yes
  • HS Code 2836 99 17
  • ToxicityLD50 orally in Rabbit: 2625 mg/kg
Rubidium carbonate Usage And Synthesis
  • Physical PropertiesColorless crystals or white powder; monoclinic structure; very hygroscopic; melts at 837°C; decomposes above 900°C; very soluble in water.
  • UsesRubidium carbonate is used in special glass and in fiber optics. It enhances stability and durability of glass, reducing its conductivity. It also is used in the preparation of Rb metal and other rubidium salts.
  • PreparationRubidium carbonate is an intermediate in recovery of rubidium from lepidolite. The mineral, on prolonged heating with concentrated sulfuric acid, converts to alums.
    The mixed alum solution, on treatment with ammonia or potassium carbonate, forms carbonates of potassium, rubidium and cesium. Rubidium carbonate is separated from other alkali metal carbonates by fractional crystallization (see Rubidium)
    The carbonate salt also may be obtained by passing carbon dioxide through a solution of rubidium hydroxide in a fluorocarbon or nickel container. The solution is evaporated to yield the product carbonate.
    Also, the salt may be prepared by adding ammonium carbonate to a solution of rubidium hydroxide. The solution is evaporated to dryness to expel ammonia.
  • Chemical PropertiesWhite powder.Extremely hygroscopic; soluble in water. Dissociates above 900C.
  • UsesSpecial glass formulations.
  • UsesRubidium carbonate (Rb2O3) is used to make special types of glass.
  • HazardStrong irritant to tissue.
Rubidium carbonate(584-09-8)Related Product Information
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