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4,4'-Bipyridine

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4,4'-Bipyridine Basic information
4,4'-Bipyridine Chemical Properties
  • Melting point:109-112 °C(lit.)
  • Boiling point:305 °C(lit.)
  • Density 1.2814 (rough estimate)
  • refractive index 1.6057 (estimate)
  • Flash point:304-305°C
  • storage temp. Store below +30°C.
  • solubility 4.5g/l
  • pkapK1:3.17(+2);pK2:4.82(+1) (25°C)
  • form Powder
  • color Off-white to beige
  • Water Solubility slightly soluble
  • Sensitive Hygroscopic
  • λmax300nm(CH3CN)(lit.)
  • Merck 14,3348
  • BRN 113176
  • Stability:Stable. Incompatible with strong oxidizing agents, strong acids.
  • InChIKeyMWVTWFVJZLCBMC-UHFFFAOYSA-N
  • CAS DataBase Reference553-26-4(CAS DataBase Reference)
  • NIST Chemistry Reference4,4'-Bipyridine(553-26-4)
  • EPA Substance Registry System4,4'-Bipyridine (553-26-4)
Safety Information
  • Hazard Codes T,Xi
  • Risk Statements 25-36/37/38-20/21-23/24/25
  • Safety Statements 26-36/37/39-45
  • RIDADR UN 2811 6.1/PG 3
  • WGK Germany 3
  • RTECS DW1760000
  • Hazard Note Irritant
  • TSCA Yes
  • HazardClass 6.1
  • PackingGroup III
  • HS Code 29333999
  • ToxicityLD50 orally in Rabbit: 172 mg/kg
MSDS
4,4'-Bipyridine Usage And Synthesis
  • Chemical Propertiesoff-white to tan powder
  • DefinitionChEBI: A bipyridine in which the two pyridine moieties are linked by a bond between positions C-4 and C-4'.
  • Synthesis Reference(s)Tetrahedron Letters, 26, p. 1655, 1985 DOI: 10.1016/S0040-4039(00)98576-9
  • Safety ProfilePoison by ingestion. When heatedto decomposition it emits toxic vapors of NOx.
  • Purification MethodsIt crystallises from water, *benzene/pet ether, ethyl acetate and sublimes in vacuo at 70o. Also purify it by dissolving in 0.1M H2SO4 and twice precipitating by addition of 1M NaOH to pH 8. Then recrystallise it from EtOH. For the dihydrochloride see Viologen below. [Collman et al. J Am Chem Soc 109 4606 1987, Beilstein 23 H 800, 23 III/IV 1371, 23/8 V 28.]
4,4'-Bipyridine Preparation Products And Raw materials
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