N-METHYLMORPHOLINE N-OXIDE MONOHYDRATE

PRODUCT IDENTIFICATION

CAS NO. 7529-22-8, 70187-32-5

N-METHYLMORPHOLINE N-OXIDE

EINECS NO. 231-391-8
FORMULA C5H11NO2·H2O
MOL WT. 135.16
H.S. CODE  
TOXICITY  
SYNONYMS 4-Methylmorpholine 4-oxide monohydrate;
4-Methylmorpholine-N-oxide; 4-Methylmorpholine N-oxide monohydrate; NMO monohydrate; 4-Methylmorpholin-4-oxidmonohydrat (German); 4-Oxido de 4-metilmorfolina, monohidrato (Spanish); 4-Oxyde de 4-méthylmorpholine, monohydrate (French);
SMILES  

CLASSIFICATION

 

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE

white to light beige powder

MELTING POINT 69 - 74 C
BOILING POINT  
SPECIFIC GRAVITY 1.13
SOLUBILITY IN WATER  
AUTOIGNITION

 

pH  
VAPOR DENSITY  
NFPA RATINGS Health: 1; Flammability: 0; Reactivity: 0

REFRACTIVE INDEX

 
FLASH POINT

 

STABILITY Stable under ordinary conditions

APPLICATIONS

Improver of transition-metal complex catalytic oxygenation of both alkenes (or alkanes) and oxidation of alcohols to aldehydes and ketones.
SALES SPECIFICATION

APPEARANCE

white to light beige powder

ASSAY

97.0% min

ASH 0.1% max
TRANSPORTATION
PACKING 25kg in fiber drum
HAZARD CLASS  
UN NO.

 

OTHER INFORMATION
Hazard Symbols: XI, Risk Phrases: 36/37/38, Safety Phrases: 26-37/39
GENERAL DESCRIPTION OF MORPHOLINE
Morpholine is a hygroscopic, weak basic, oily and  volatile liquid; with a characteristic amine odor; melting point -5 C,  boiling point at 129 C; miscible with water and with many alcohol organic solvents such methanol, ethanol, acetone, ethers, BTX (it is used as a solvent itself), but has limited solubility in alkaline solutions. It decomposes on heating resulting toxic nitrogen oxides and violently reacts with strong oxidants resulting fire hazard and attacking copper and its compounds. It can be prepared by the reductive ammonation of diethylene glycol with hydrogen, by the dehydration of diethanolamine with a strong acid (oleum) and by heating bis(chloroethyl)ether with excess ammonia. It is a cyclic amino ether as well as a secondary amine. 1,4-Dioxane is the form which nitrogen atom is replaced by oxygen. The ether property of morpholine is typically inert. The secondary amine property involves in the most chemical reactions. Morpholine is a versatile chemical. It is used as a solvent itself for resins, dyes, and waxes. Its alkyl derivatives (e.g. N-methylmorpholine, N-ethylmorpholine) are used as a catalyst for the production of polyurethane foams. Nitrogen in ring system involves in the introduction of sterically demanding asymmetric center to achieve effective stereocontrol. Morpholine has a similar volatility with water. It is used as a pH adjustment additive in fossil fuel and steam systems as a corrosion inhibitor. The most important use is as a chemical intermediate to prepare below compounds:
  • Rubber chemicals for vulcanization and stabilization
  • Corrosion inhibitors in boiler water treatment system and in aqueous hydraulic liquids to protect metals against corrosion and tarnish by acid fumes.
  • Optical brighteners which are stable to chlorine bleaches for the use in detergent formulations
  • Fatty acid salts for the formulation of water-resistant emulsifier or plasticizer in toiletry and cosmetic products.
  • Sulfonamide bactericides or disinfectants
  • Quaternary morpholinium salts for hair conditioners and deodorant products
  • Colourants for hair dyes and blueprints
  • Pharmaceuticals (analgesics, local anaesthetics, antibiotics, antimycotics and for anti-plaques)