Propionaldehyde

Propionaldehyde Solvent Suppliers & Exporters

Propionaldehyde

CAS Number: 123‑38‑6

Chemical Formula:C₃H₆O

Product Introduction

A volatile, colorless liquid with a pungent–fruity odor. Produced industrially via hydroformylation of ethylene, propionaldehyde is a versatile building block in organic synthesis—used for alkyd resin production, fragrance compounds, and as a precursor to propanol and other chemicals

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Physical & Chemical Properties

  • Melting Point: 81 °C
  • Boiling Point:46–50 °C
  • Density @ 25 °C:~0.805–0.81 g/mL
  • Vapor Pressure: ~18.8 psi @55 °C or ~343 hPa @20 °C
  • Refractive Index:~1.362–1.375 n₂₀/D
  • Flash Point:−26 °C CC
  • Vapor Density:~2 × air
  • Solubility: ~540 g/L in water @20 °C; miscible with alcohols, ethers, chloroform

Applications

  • Precursor to trimethylolethane for alkyd resins
  • Intermediate in fragrances, pharmaceuticals, heterocycles, propanol manufacturing

Safety & Handling

  • Highly flammable liquid & vapor (H225) :explosive vapor-air range 2.3–21%
  • Irritant/corrosive :(eyes, respiratory); NFPA (2/3/2)
  • TLV–TWA 20 ppm; IDLH 8000 ppm
  • Store ≤ 20 °C, under inert atmosphere to prevent oxidation and polymerization; use PPE, grounding, explosion-proof ventilation

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