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CADMIUM CARBONATE

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CADMIUM CARBONATE Basic information
CADMIUM CARBONATE Chemical Properties
  • Melting point:357 °C
  • Density 4.258 g/mL at 25 °C(lit.)
  • solubility H2O: insoluble(lit.)
  • form powder
  • Specific Gravity4.258
  • color White to off-white
  • OdorOdorless
  • Water Solubility Very slightly soluble in water. Soluble in dilute acids, concentrated solutions of ammonium salts.
  • Merck 14,1616
  • Solubility Product Constant (Ksp)pKsp: 12
  • Stability:Stable. Incompatible with strong acids.
  • CAS DataBase Reference513-78-0(CAS DataBase Reference)
  • EPA Substance Registry SystemCadmium carbonate (513-78-0)
Safety Information
MSDS
CADMIUM CARBONATE Usage And Synthesis
  • PreparationCadmium carbonate is precipitated by adding excess ammonium carbonate to a solution of cadmium chloride:
    CdCl2 + (NH4)2CO3 → CdCO3 + 2NH4Cl
    The precipitate is filtered and dried at 100°C. If an alkali metal carbonate is used instead of ammonium carbonate, a hydrated basic carbonate is obtained which upon heating with ammonium chloride at 150°C in the absence of air produces anhydrous carbonate.
    Cadmium carbonate also may be obtained by slow absorption of cadmium oxide with carbon dioxide.
  • Chemical PropertiesWhite powdery solid; density 4.258 g/cm3; decomposes on heating below 500°C; insoluble in water and liquid ammonia; soluble in acid (with reaction).
  • Physical propertiesWhite powdery solid; density 4.258 g/cm3; decomposes on heating below 500°C; insoluble in water and liquid ammonia; soluble in acid (with reaction).
  • UsesCadmium carbonate occurs in nature as the mineral otavite. The commer_x0002_cial applications of this compound are limited. It is used as a catalyst in organic synthesis and as a starting material to prepare other cadmium salts.
  • Safety ProfileConfirmed human carcinogen. Poison by ingestion. Mutation data reported. When heated to decomposition it emits toxic fumes of cadmium.
CADMIUM CARBONATE Preparation Products And Raw materials
CADMIUM CARBONATE(513-78-0)Related Product Information
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