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7529-22-8 - 4-Methylmorpholine N-oxide, 50% w/w aq. soln. - A19802 - Alfa Aesar

A19802 4-Methylmorpholine N-oxide, 50% w/w aq. soln.

CAS Number

Size Price ($) Quantity Availability
100g 26.06
250g 35.72
1000g 97.03
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4-Methylmorpholine N-oxide, 50% w/w aq. soln.


Chemical Properties

Formula Weight
Melting point
Boiling Point
Refractive Index
Soluble in water, methanol, ethanol, acetone, ethers and dimethylsulfoxide.


4-Methylmorpholine N-oxide acts as a non-metallic catalyst for the cyanosilylation of ketones. It is also employed as a co-oxidant for Sharpless asymmetric dihydroxylation in ionic liquids. It serves as a solvent in the Lyocell process to produce tencel fiber. Further, it is used in the preparation of aldehydes from primary alcohols in the presence of tetrapropylammonium perruthenate.


Hygroscopic. Store in a cool place. Incompatible with strong oxidizing agents, acid chlorides, acid anhydrides and chloroformates.

Literature References

Li, J.; Liu, Y.; Xu, X. S.; Li, Y. L.; Zhang, S. G.; Yoon, I.; Shim, Y. K.; Wang, J. J.; Yin, J. G. Highly efficient synthesis of novel methyl 132-methylene mesopyropheophorbide a and its stereoselective Michael addition reaction. Org. Biomol. Chem. 2015, 13 (7), 1992-1995.

Huang, J.; Cui, J.; Li, X.; Jia, W.; Gu, C.; Shim, J. J. Selective Detection of TNT in Water Based on Functionalized Reduced Graphene Oxide Sensor Device. Sensor Lett. 2015, 13 (5), 357-364.

GHS Hazard and Precautionary Statements

Hazard Statements: H315-H319-H335

Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.

Precautionary Statements: P261-P280-P305+P351+P338-P304+P340-P362-P312-P321-P405-P403+P233-P501a

Avoid breathing dust/fume/gas/mist/vapours/spray. Wear protective gloves/protective clothing/eye protection/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Take off contaminated clothing and wash before reuse. Call a POISON CENTER or doctor/physician if you feel unwell. Specific treatment (see label). Store locked up. Store in a well-ventilated place. Keep container tightly closed. Dispose of contents/container in accordance with local/regional/national/international regulations.

Other References

Harmonized Tariff Code


  • A14916

    Trimethylamine N-oxide dihydrate, 98+%
  • A15708

    Pyridinium p-toluenesulfonate, 98+%
  • 12103

    Osmium(VIII) oxide, 99.8% (metals basis), Os 74.4% min
  • 13798

    Sodium metaperiodate, 98%
  • 45385

    Osmium(VIII) oxide, 4% aq. soln.

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