Amines REACH

N-methylmorpholine

CAS Number
109-02-4
EC Number
203-640-0
Abbreviation
NMM

What is N-methylmorpholine?

N-methylmorpholine (CAS 109-02-4), commonly abbreviated as NMM, is a tertiary amine solvent and catalyst.

Where is N-methylmorpholine used?

  • Pharmaceutical manufacturing: non-nucleophilic base in peptide coupling reactions for cleaner synthesis of active pharmaceutical ingredients
  • Polyurethane foam and elastomer production: catalyst controlling gel and blow reaction timing, affecting density and mechanical performance
  • Coatings and adhesives: promotes crosslinking and improves adhesion to difficult substrates
  • Printing inks: co-solvent improving pigment dispersion and resin compatibility
  • It also serves as a base catalyst and reaction solvent where controlled basicity and miscibility with water and organic media are required.

Good to know: Technical grade is the most common commercial specification; high-purity grades meet pharmaceutical manufacturing requirements.

Commercial specifications

  • Bulk quantities including drums and IBC containers
  • Smaller packaging for laboratory and specialty use

Other Names (Synonyms)

4-Methylmorpholine|Morpholine, 4-methyl-|1-Methylmorpholine|11P91ANU5X|RefChem:99901|NMM

Contact us for supply of N-methylmorpholine

Request Quote

What are the physical properties of N-methylmorpholine?

Melting Point −66 °C(lit.)
Boiling Point 115 °C
Density 0.91406 g/cm³ @ Temp: 25.00 °C
Flash Point 75 °F
Appearance clear liquid
Color Clear
Form Liquid
Water Solubility >500 g/L (20 ºC)
Vapor Pressure 18 mm Hg ( 20 °C)
Refractive Index n 20/D 1.435(lit.)
pH 10.6 (50g/l, H2O, 20℃)
Log P -0.32 at 25℃

How is N-methylmorpholine classified and handled safely? Learn More

Danger
GHS02· Flammable GHS05· Corrosive GHS07· Irritant

Hazard Statements

H225 Highly Flammable liquid and vapor
H302 Harmful if swallowed
H312 Harmful in contact with skin
H314 Causes severe skin burns and eye damage
H318 Causes serious eye damage
H332 Harmful if inhaled

Precautionary Statements

P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P233 Keep container tightly closed.
P240 Ground and bond container and receiving equipment.
P241 Use explosion-proof [electrical/ventilating/lighting/…] equipment.

Which trade and regulatory codes apply to N-methylmorpholine?

HS Code 29349990
UN Number 2535
ADR Class 3
Packing Group II
WGK (Germany) 1
Call Request Quote