Propylene Oxide

Propylene Oxide Exporters & Distributors in India

Propylene Oxide

CAS Number: 75‑56‑9

Synonyms: Propylene oxide; 1,2‑epoxypropane; Methyloxirane; 2‑Methyloxirane

Chemical Formula: C₃H₆O

Molecular Weight: 58.08 g/mol

Product Introduction

A colorless, volatile, ethereal-odored liquid used industrially to produce propylene glycol, polyether polyols, glycerol, and as a solvent and reagent in organic synthesis. USP-grade available as reference standard.

Physical & Chemical Properties

Property Value
Appearance Colorless liquid
Odor Benzene-like, sweet, ethereal
Density @ 25 °C ~0.83 g/cm³
Melting Point −112 °C
Boiling Point ~34–35 °C
Flash Point −37 °C
Vapor Pressure @20 °C ~445 mm Hg
Solubility in Water ~40–41 %
Vapor Density ~2 × air
Explosion Limits ~2.3–36%

Applications

  • Intermediate for propylene glycol and polyether polyols (e.g., for polyurethane)
  • Organic synthesis: epoxide opening, polymerization, specialized reagents
  • USP Reference Standard for analytical calibration

Safety & Handling

Extremely flammable, pressurized, and explosive. Toxic, mutagenic, respiratory irritant; IARC 2B carcinogen. TLV‑TWA ~20 ppm. GHS H224/H302/H311/H319/H335/H340/H350. Handle with PPE under inert conditions, store cool sealed away from ignition and organic materials.

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