N-formylmorpholine (NFM) is an important organic solvent and fine chemical raw material. It is a colorless and transparent liquid at room temperature. It has the chemical properties of amide. Its aqueous solution is easily hydrolyzed into morpholine and formic acid in the presence of acid or alkali, and the aqueous solution is weakly alkaline.

N-formylmorpholine is an excellent extraction solvent for the preparation of aromatics, and it is widely used in synthetic fibers and other fields.

N-formyl  Morpholine formylmorpholine CAS 4394-85-8

N-formylmorpholine formylmorpholine CAS 4394-85-8

Basic information:

Chinese name: N-formylmorpholine

Synonyms: 4-formylmorpholine;N-formylmorpholine;4-morpholinecarboxaldehyde;N-formylmorpholine;N-formylmorpholine Morpholine;N-formylmorpholine;N-formylmorpholine;4-formylmorpholine

Chinese name N-formylmorpholine
Foreign name N-Formylmorphol
Don’t First name 4-morpholinaldehyde
Molecular formula C5H9NO2
CAS: 4394-85-8
EINECS: 224-518-3
Molecular weight: 115.1305

Physical and chemical properties:

N-formylmorpholine Properties

Melting point: 20-23 °C(lit.)

Boiling point: 236-237 °C(lit.)

Density: 1.145 g/mL at 25 °C(lit.)

Vapor pressure: 0.03 hPa (20 °C)

Refractive index: n20/D 1.485(lit.)

Flash point: >230 °F

Storage conditions: 2-8°C

Solubility: SOLUBLE

Form: Liquid

Color: Clear yellow

PH value: 10 (250g/l, H2O, 20℃)

explosive limit 1.2-8.2%(V)

Water solubility: SOLUBLE

Sensitivity: Hygroscopic

BRN: 110293

CAS: Database 4394-85-8(CAS DataBase Reference)

NIST chemical substance information: N-Formylmorpholine(4394-85-8)

EPA chemical substance information 4-Morpholinecarboxaldehyde(4394-85-8)


It is used for the desulfurization of natural gas, syngas, flue gas, natural gas condensate and gasoline; it is the extraction solvent of petroleum aromatics unit and can be recovered by extractive distillation Aromatics, it has good selectivity, good thermal and chemical stability, non-toxic, non-corrosive. It is a widely used solvent for the recovery of aromatic hydrocarbons. It is an excellent aprotic solvent with high solubility and selectivity for aromatics. Its mixture has been successfully used in aromatics extraction process and butene concentration process.

Storage and transportation:

Should be sealed and stored in a dry, cool and ventilated warehouse


200KG/bucket Storage: It is recommended to store in a dry and cool area with proper ventilation. After the original packaging, please fasten the packaging cover as soon as possible to prevent the product performance from being mixed with other substances such as waterproof grade. Store in a cool, dry place, keep the container tightly closed, and avoid contact with oxides. Do not inhale dust and avoid contact with skin and mucous membranes. Smoking, eating and drinking are prohibited in the workplace. After work, take a shower and change clothes. Store contaminated clothes separately and use them after washing. Maintain good hygiene habits.