‌N-Methylmorpholine‌ is a multifunctional organic compound with a wide range of uses, including:

‌Solvent and extractant‌: N-methylmorpholine is an excellent solvent, suitable for dyes, waxes, shellac, etc. It is also used as an extractant to effectively extract the desired components from a mixture.
‌Catalyst‌: In the polyurethane industry, N-methylmorpholine is used as a catalyst for polyester-type polyurethane soft block foam to promote the polymerization reaction. In addition, it is also used in the synthesis of rubber accelerators and other fine chemicals, and as a catalyst for the synthesis of ampicillin and hydroxybenzylpenicillin.
‌Corrosion Inhibitor‌: N-methylmorpholine acts as a corrosion inhibitor and can protect metal surfaces from corrosion.
‌Analytical reagent‌: In the laboratory, N-methylmorpholine can be used as an analytical reagent for various chemical analyses.

Gas Chromatography Stationary Solution: N-methylmorpholine is also used in gas chromatography analysis as a stationary solution.
‌Intermediates of plant growth regulators‌: N-methylmorpholine is an intermediate of plant growth regulators and participates in the synthesis of plant growth regulators.
‌Stabilizer for chlorinated hydrocarbons‌: In chlorinated hydrocarbons, N-methylmorpholine is used as a stabilizer to increase its chemical stability.
‌Spinning solvent for green fibers‌: By oxidizing N-methylmorpholine with hydrogen peroxide, N-methylmorpholine oxide can be obtained, which is used for spinning of Lyocell (commonly known as Tencel) and Newcell man-made fiber filaments. Solvent, environmentally friendly.
In summary, N-methylmorpholine plays an important role in multiple fields due to its unique chemical properties and versatility‌

4-Methylmorpholine Chemical Properties
Melting point −66 °C(lit.)
Boiling point 115-116 °C750 mm Hg(lit.)
density 0.92 g/mL at 25 °C(lit.)
vapor density >1 (vs air)
vapor pressure 18 mm Hg ( 20 °C)
refractive index n20/D 1.435(lit.)
Fp 75 °F
storage temp. Store below +30°C.
solubility Chloroform (Soluble), Ethyl Acetate, Methanol (Slightly)
form Liquid
pka 7.38(at 25℃)
color Clear
Specific Gravity 0.920 (20/4℃)
PH 10.6 (50g/l, H2O, 20℃)
explosive limit 2.1%(V)
Water Solubility >500 g/L (20 ºC)
Merck 14,6277
BRN 102719
Stability: Volatile
InChIKey SJRJJKPEHAURKC-UHFFFAOYSA-N

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