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Nickel(II) acetate tetrahydrate

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Nickel(II) acetate tetrahydrate Basic information
Nickel(II) acetate tetrahydrate Chemical Properties
  • Melting point:°Cd ec.)
  • Boiling point:16℃
  • Density 1.798 g/mL at 25 °C(lit.)
  • storage temp. Inert atmosphere,Room Temperature
  • form Solid
  • Specific Gravity1.798
  • color White to off-white
  • Water Solubility 182 g/L (20 ºC)
  • Sensitive Hygroscopic
  • Hydrolytic Sensitivity0: forms stable aqueous solutions
  • Merck 14,6499
  • BRN 3730764
  • Stability:Stable.
  • CAS DataBase Reference6018-89-9(CAS DataBase Reference)
  • EPA Substance Registry SystemNickel diacetate tetrahydrate (6018-89-9)
Safety Information
MSDS
Nickel(II) acetate tetrahydrate Usage And Synthesis
  • Physical PropertiesThe tetrahydrate is a green crystalline solid; sweet taste; odor of acetic acid; density 1.744 g/cm3; loses water on heating to form a yellow-green powder of anhydrous nickel acetate; decomposes above 250°C; soluble in water, 17g/100mL at 20°C; sparingly soluble in alcohol.
  • UsesNickel acetate is used as a catalyst. It also is used as a dye mordant in textiles. Other applications are in electroplating nickel and as a sealer for anodizing aluminum.
  • PreparationNickel acetate is prepared by reacting nickel hydroxide or nickel carbonate with dilute acetic acid. The tetrahydrate is crystallized from solution.
    Ni(OH)2 + 2CH3COOH → (CH3COO)2Ni + 2H2O
    NiCO3 + 2CH3COOH → (CH3COO)2Ni + CO2 + 2H2O
    On heating, the solution hydrolyzes depositing nickel hydroxide.
  • Chemical Propertiesgreen monoclinic crystal(s); hygroscopic; used in textiles as a mordant [HAW93]
  • UsesNickel(II) acetate tetrahydrate can be used in synthesis of polynuclear-nickel polyoxotungstate cluster compounds that are ideal for the design of molecular magnets.
  • UsesNickel(II) Acetate Tetrahydrate is a reactant in the synthesis of metalloprophyrazines as active components of membranes of anion-selective electrodes.
  • Safety ProfileConfirmed human carcinogen. Poison by ingestion and intraperitoneal routes. Mutation data reported. When heated to decomposition it emits acrid smoke and irritating fumes. See also NICKEL(II) ACETATE and NICKEL COMPOUNDS.
  • Purification MethodsThe acetate crystallises from aqueous AcOH as the green tetrahydrate salt. It is soluble in 6 parts of H2O. It forms lower hydrates and should be kept in a well-sealed container. [Hardt & Pohlmann Z Anorg Allgem Chem 343 92 1966, Beilstein 2 IV 120.]
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