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O-TERPHENYL

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O-TERPHENYL Basic information
O-TERPHENYL Chemical Properties
  • Melting point:56-59 °C(lit.)
  • Boiling point:337 °C(lit.)
  • Density 1,1 g/cm3
  • vapor pressure <1 Pa (25 °C)
  • refractive index 1.5500 (estimate)
  • Flash point:>230 °F
  • storage temp. Store below +30°C.
  • solubility 1.24mg/l
  • form Fluid
  • Water Solubility Insoluble in water. Solubility in toluene is almost transparent. Sparingly soluble in lower alcohols and glycols; very soluble in common aromatic solvents.
  • λmax233nm(Cyclohexane)(lit.)
  • BRN 1908446
  • CAS DataBase Reference84-15-1(CAS DataBase Reference)
  • EPA Substance Registry Systemo-Terphenyl (84-15-1)
Safety Information
MSDS
O-TERPHENYL Usage And Synthesis
  • Chemical PropertiesWhite crystalline
  • General DescriptionColorless or light-yellow solid. Mp 58-59°C; bp: 337°C. Density: 1.16 g cm-3. Insoluble in water. Usually shipped as a solid mixture with its isomers m-terphenyl and p-terphenyl that is used as a heat-transfer fluid.
  • Reactivity ProfileO-TERPHENYL is non-flammable but combustible (flash point 339°F). Extremely stable thermally. Incompatible with strong oxidizing agents but not very reactive at room conditions.
  • HazardCombustible. Eye and upper respiratory tract irritant.
  • Safety ProfileModerately toxic by ingestion. Combustible when exposed to heat or flame. To fight fire, use water, CO2, dry chemical. When heated to decomposition it emits acrid smoke and irritating fumes.
  • Purification MethodsCrystallise o-terphenyl from EtOH. Also purify it by chromatography of CCl4 solution on alumina, with pet ether as eluent, followed by crystallisation from pet ether (b 40-60o) or pet ether/*C6H6. It also distils under vacuum. [Beilstein 5 III 2292, 5 IV 2478.]
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