N-Formylmorpholine is a colorless to slightly yellowish liquid with a mint-like odour. It is a strong base used as a chemical intermediate in the production of pharmaceuticals, pesticides and other chemicals. N-formylmorpholine is also used as a corrosion inhibitor and stabilizer for polymers.

The chemical formula of N-formylmorpholine is C5H9NO. It has a molar mass of 115.13 g/mol. N-formylmorpholine has a melting point of 20-23°C and a boiling point of 236-237°C. N-formylmorpholine has a density of 1.145 g/mL. The refractive index of N-formylmorpholine is 1.485.

N-Formylmorpholine is a flammable liquid. Flash point is 113 °C. The autoignition temperature is 480 °C. The vapor pressure of N-formylmorpholine is 0.03 hPa at 20 °C.

N-formylmorpholine is a strong base. N-Formylmorpholine has a pKa of 10.2. N-Formylmorpholine has a pKb of 2.8.

N-formylmorpholine is a water-soluble compound. The solubility of N-formylmorpholine in water is 100 g/L at 25 °C.

N-formylmorpholine is a relatively stable compound. It is not easily oxidized or reduced. However, it can react with acids to form salts.

N-formylmorpholine is a harmful substance. It is a skin and eye irritant. It is also a respiratory irritant. N-formylmorpholine is a suspected carcinogen.

N-formylmorpholine should be handled with care. It should be stored in a cool and dry place, away from heat and ignition sources. It should be kept in an airtight container and should not be mixed with other chemicals without consulting the safety data sheet.

N-formylmorpholine is a kind of amide, which has the general chemical properties. It has a melting point of 20-23°C, a boiling point of 236-237°C, and a density of 1.145 g/mL at 25°C. As an organic chemical intermediate, n-formylmorpholine has dual properties of tertiary amine and ether. It can be used as surfactant, extractant, corrosion inhibitor, and is also widely used in the fields of pesticides and pharmaceuticals.