Morpholine

Morpholine

CAS Number:110‑91‑8

Synonyms:Tetrahydro-1,4-oxazine; Diethylenimine oxide

Chemical Formula:C₄H₉NO

Product Introduction

Morpholine is a colorless, hygroscopic liquid with a faint fishy or ammonia-like odor. Featuring both secondary amine and ether functionalities, it serves as a versatile base, solvent, and chemical intermediate in a wide range of industrial and lab applications.

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Physical & Chemical Properties

Property Value
Appearance Colorless, hygroscopic liquid
Odor Weak ammonia/fishy
Density ~1.00 g/mL @ 20 °C
Melting Point ~–5 °C
Boiling Point ~129 °C
Vapor Pressure ~6–7 mmHg @ 20 °C
Flash Point (C.C.) ~31 °C
Auto‑ignition Temp ~275 °C
Vapor Density ~3 × air
pKa (conj. acid) ~8.3
Solubility Fully miscible in water & organics

Applications

  • pH adjustment and corrosion inhibition in steam systems
  • Solvent and intermediate in pharmaceuticals, agrochemicals, rubber accelerators, coatings, and dye manufacture
  • Used in wax emulsifiers and fruit coating formulation

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