Morpholine

C4H9NOCAS 110-91-887.12 g/mol

OHN
EtherSecondary amine

Properties

Molecular formula
C4H9NO
Molar mass
87.12 g/mol
Exact mass
87.0684 Da
Density
1.0007 g/mL (at 20 °C)
Melting point
−4.9 °C
Boiling point
128.9 °C
pKa
8.49 (conjugate acid)
Flash point
35 °C (closed cup)
Water solubility
miscible
logP
-0.39Crippen estimate
Polar surface area
21.3 Ų
H-bond donors / acceptors
1 / 2
Rotatable bonds
0

Hazards

Danger
Flammable (GHS02)Corrosive (GHS05)Irritant (GHS07)

Harmonised EU classification (CLP Annex VI, index 613-028-00-9), via PubChem.

Precautionary statements

P210, P233, P240, P241, P242, P243, P260, P261, P264, P270, P271, P280, P301+P317, P301+P330+P331, P302+P352, P302+P361+P354, P303+P361+P353, P304+P340, P305+P354+P338, P316, P317, P321, P330, P362+P364, P363, P370+P378, P403+P235, P405, P501

Identifiers

CAS number
110-91-8
SMILES
C1COCCN1
InChIKey
YNAVUWVOSKDBBP-UHFFFAOYSA-N
InChI
InChI=1S/C4H9NO/c1-3-6-4-2-5-1/h5H,1-4H2

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Names and synonyms

13 names · show all
  • Diethylene imidoxide
  • Diethylene oximide
  • Diethylenimide oxide
  • p-Isoxazine, tetrahydro-
  • 1-Oxa-4-azacyclohexane
  • 2H-1,4-Oxazine, tetrahydro-
  • 4H-1,4-Oxazine, tetrahydro-
  • Tetrahydro-p-oxazine
  • Tetrahydro-1,4-oxazine
  • Tetrahydro-2H-1,4-oxazine
  • BASF 238
  • Drewamine
  • NSC 9376

Safety data sheets

One stored sheet lists this compound in section 3, matched by the CAS number 110-91-8. Each row opens the sheet with its composition and PDF.

Work with Morpholine

Stereoisomers, salts and isotopologues

The same compound in another form: other stereochemistry, a salt or hydrate, the free acid or base, or an isotope-labelled version.

Similar compounds

Tanimoto similarity of circular fingerprints over the whole catalogue.

Same formula

Elsewhere