Morpholine
CAS 110-91-8
EC 203-815-1
Formula C4H9NO
MW 87.12 g/mol
Heterocyclic Compounds Plastics & PolymersLubricants & MetalworkingPharmaceuticals & HealthcareWater Treatment CatalysisCross-linking & CuringPreservation & BiocideCorrosion Inhibition
Description
Morpholine (CAS 110-91-8, EC 203-815-1, formula C4H9NO) is a cyclic secondary amine, also referenced under the names Diethylene Oximide and MORPHOLIN. It carries no assigned E-code and is classified within the broader amines category for industrial and specialty chemical applications.
In water treatment, morpholine functions as a corrosion inhibitor by neutralizing acidic condensate in steam systems, raising pH without introducing solids. In rubber and polymer manufacturing, it acts as a crosslinker and cure accelerator, forming stable covalent bonds within polymer networks. Pharmaceutical formulators also use it as a catalyst and pH-adjusting agent in active ingredient synthesis.
Morpholine is available in technical and pharmaceutical-grade forms, with Ph.Eur.-compliant material suitable for regulated applications. It falls under REACH registration requirements for EU supply. Standard packaging includes drums and IBC containers, with HS code 29349900 applicable for import and export documentation purposes.
In water treatment, morpholine functions as a corrosion inhibitor by neutralizing acidic condensate in steam systems, raising pH without introducing solids. In rubber and polymer manufacturing, it acts as a crosslinker and cure accelerator, forming stable covalent bonds within polymer networks. Pharmaceutical formulators also use it as a catalyst and pH-adjusting agent in active ingredient synthesis.
Morpholine is available in technical and pharmaceutical-grade forms, with Ph.Eur.-compliant material suitable for regulated applications. It falls under REACH registration requirements for EU supply. Standard packaging includes drums and IBC containers, with HS code 29349900 applicable for import and export documentation purposes.
Physical Properties
| Melting Point | -4.9 °C |
| Boiling Point | 128.9 °C @ Press: 760 Torr |
| Density | 1.0007 g/cm³ @ Temp: 20 °C |
| Flash Point | 96 °F |
| Appearance | Morpholine is a colorless liquid with a weak ammonia or fish-like odor. The odor threshold is 0.01 ppm. |
| Color | APHA: ≤15 |
| Odor | Characteristic amine-like odor |
| Form | Liquid |
| Water Solubility | MISCIBLE |
| Vapor Pressure | 31 mm Hg ( 38 °C) |
| Refractive Index | n 20/D 1.454(lit.) |
| pH | 11.2 (H2O)(undiluted) |
| Log P | -0.860 |
Safety & Handling (Learn More)
Danger GHS02 GHS05 GHS07 GHS09 GHS06 GHS08
H
H226H290H302H311H312H314H318H319H331H332H341H370H372H402H411H302+H312+H332
P
P203P210P233P234P240P241P242P243P260P261P262P264P270P271P273P280P316P317P318P319P321P330P363P390P391P405P406P501P264+P265P301+P317P302+P352P304+P340P308+P316P337+P317P361+P364P362+P364P370+P378P403+P233P403+P235P301+P330+P331P302+P361+P354P303+P361+P353P305+P351+P338P305+P354+P338
Trade & Regulatory
| HS Code | 29349900 |
| UN Number | 2054 |
| ADR Class | 8 |
| Packing Group | I |
| Storage Class | 3 - Flammable liquids |
| WGK (Germany) | 3 |
Other Names
diethylene oximidediethylene imidoxidetetrahydro-p-oxazineMORPHOLIN
Related Products
Raw Materials
Derivatives
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