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N-Ethylmorpholine structure
Chemical Name:
HEM;Texacat NEM;Toyocat -NEM;Ethylmorpholine;N-Ethylmorfolin;4-ETHYLMORPHOLINE;LUPRAGEN(R) N 104;N-ETHYLMORPHOLINE;4-ethyl-morpholin;4-Ethylmorhpoline
Molecular Formula:
Formula Weight:
MOL File:

N-Ethylmorpholine Properties

Melting point:
−63 °C(lit.)
Boiling point:
139 °C(lit.)
0.91 g/mL at 20 °C(lit.)
vapor pressure 
8.1 hPa (20 °C)
refractive index 
n20/D 1.441(lit.)
Flash point:
82 °F
storage temp. 
Flammables area
7.67(at 25℃)
Cream to beige to brown-grey
11.8 (100g/l, H2O, 20℃)
explosive limit
Water Solubility 
Air Sensitive
Exposure limits
NIOSH REL: TWA 5 ppm (23 mg/m3), IDLH 100 ppm; OSHA PEL: TWA 20 ppm (94 mg/m3); ACGIH TLV: TWA 5 ppm (adopted).
Stable. Flammable. Incompatible with strong oxidizing agents. Slightly air sensitive.
CAS DataBase Reference
100-74-3(CAS DataBase Reference)
NIST Chemistry Reference
Morpholine, 4-ethyl-(100-74-3)
EPA Substance Registry System
Morpholine, 4-ethyl-(100-74-3)
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
  • NFPA
Hazard Codes  C
Risk Statements  10-21/22-34
Safety Statements  26-36/37/39-45-16
RIDADR  UN 2920 8/PG 2
WGK Germany  1
RTECS  QE4025000
Autoignition Temperature 160 °C
HazardClass  8
PackingGroup  II
HS Code  29349990
Hazardous Substances Data 100-74-3(Hazardous Substances Data)
Toxicity LD50 orally in Rabbit: 1640 mg/kg LD50 dermal Rabbit 900 mg/kg
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H226 Flammable liquid and vapour Flammable liquids Category 3 Warning
H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, P501
H311 Toxic in contact with skin Acute toxicity,dermal Category 3 Danger P280, P302+P352, P312, P322, P361,P363, P405, P501
H314 Causes severe skin burns and eye damage Skin corrosion/irritation Category 1A, B, C Danger P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501
H318 Causes serious eye damage Serious eye damage/eye irritation Category 1 Danger P280, P305+P351+P338, P310
H332 Harmful if inhaled Acute toxicity,inhalation Category 4 Warning P261, P271, P304+P340, P312
H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
H371 May cause damage to organs Specific target organ toxicity, single exposure Category 2 Warning P260, P264, P270, P309+P311, P405,P501
H373 May cause damage to organs through prolonged or repeated exposure Specific target organ toxicity, repeated exposure Category 2 Warning P260, P314, P501
Precautionary statements:
P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P233 Keep container tightly closed.
P240 Ground/bond container and receiving equipment.
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash hands thoroughly after handling.
P264 Wash skin thouroughly after handling.
P270 Do not eat, drink or smoke when using this product.
P271 Use only outdoors or in a well-ventilated area.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P310 Immediately call a POISON CENTER or doctor/physician.
P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P405 Store locked up.
P403+P233 Store in a well-ventilated place. Keep container tightly closed.
P501 Dispose of contents/container to..…

NFPA 704

Diamond Hazard Value Description
2 0
Health   2 Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury (e.g. diethyl ether, ammonium phosphate, iodine)
Flammability   3 Liquids and solids (including finely divided suspended solids) that can be ignited under almost all ambient temperature conditions . Liquids having a flash point below 22.8 °C (73 °F) and having a boiling point at or above 37.8 °C (100 °F) or having a flash point between 22.8 and 37.8 °C (73 and 100 °F). (e.g. gasoline, acetone)
Instability   0 Normally stable, even under fire exposure conditions, and is not reactive with water (e.g. helium,N2)

(NFPA, 2010)

N-Ethylmorpholine price More Price(10)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 04499 4-Ethylmorpholine BioXtra, suitable for protein sequencing, ≥99.5% (GC) 100-74-3 25ml $69.5 2018-11-13 Buy
Sigma-Aldrich 04499 4-Ethylmorpholine BioXtra, suitable for protein sequencing, ≥99.5% (GC) 100-74-3 100ml $195 2018-11-13 Buy
TCI Chemical E0145 4-Ethylmorpholine >99.0%(GC)(T) 100-74-3 25mL $15 2018-11-22 Buy
TCI Chemical E0145 4-Ethylmorpholine >99.0%(GC)(T) 100-74-3 500mL $36 2018-11-22 Buy
Alfa Aesar A11905 4-Ethylmorpholine, 98% 100-74-3 500ml $38.2 2018-11-13 Buy

N-Ethylmorpholine Chemical Properties,Uses,Production

Chemical Properties

colourless liquid

Chemical Properties

4-Ethylmorpholine is a colorless liquid with an ammonia-like odor.

Physical properties

Colorless, flammable liquid with an ammonia-like odor. Experimentally determined detection and recognition odor threshold concentrations were 400 μg/m3 (85 ppbv) and 1.2 mg/m3 (250 ppbv), respectively (Hellman and Small, 1974).


Intermediate for dyestuffs, pharmaceuticals; rubber accelerators and emulsifying agents; solvent for dyes, resins, oils; catalyst in making polyurethane foams.

General Description

A colorless liquid with a strong ammonia-like odor. Severely irritates skin, eyes, and mucous membranes. Moderately soluble in water and less dense than water. Flash point 83°F .

Air & Water Reactions

Highly flammable. Moderately soluble in water .

Reactivity Profile

N-Ethylmorpholine can react vigorously with oxidizing materials. N-Ethylmorpholine dissolves LiAlH4.


Irritant to skin and eyes, absorbed by skin. Flammable, moderate fire risk. Toxic by skin absorption.

Health Hazard

Exposure can cause irritation of eyes, nose and throat. Contact with eyes may result in foggy vision and seeing halos around lights.

Safety Profile

oison by intravenous route. Moderately toxic by ingestion. Mildly toxic by inhalation. A skin and severe eye irritant. A very dangerous fire hazard when exposed to heat or flame; can react vigorously with oxidzing materials. To fight fire, use alcohol foam, foam, CO2, dry chemical. When heated to decomposition it emits toxic fumes of NOx.

Potential Exposure

Primary irritant (without allergic reaction). This material is used as a catalyst in polyurethane foam production. It is a solvent for dyes and resins. It is used as an intermediate in surfactant, dye, pharmaceutical, and rubber chemical manufacture

Environmental Fate

Chemical/Physical. Releases toxic nitrogen oxides when heated to decomposition (Sax and Lewis, 1987).
At an influent concentration of 1,000 mg/L, treatment with GAC resulted in an effluent concentration of 467 mg/L. The adsorbability of the carbon used was 107 mg/g carbon (Guisti et al., 1974).


UN2920 Corrosive liquids, flammable, n.o.s., Hazard class: 8; Labels: 8-Corrosive material, 3-Flammable liquid. UN1993 Flammable liquids, n.o.s., Hazard Class: 3; Labels: 3-Flammable liquid, Technical Name Required


May form explosive mixture with air. Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine,etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, and epoxides. Corrodes some metals. Unless inhibited, violent polymerization can occur from heat, sunlight, and contact with strong oxidizers permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, and epoxides. Attacks some plastics, rubber and coatings

Waste Disposal

Controlled incineration (oxides of nitrogen are removed from the effluent gas by scrubbers and/or thermal devices).

N-Ethylmorpholine Preparation Products And Raw materials

Raw materials

Preparation Products

N-Ethylmorpholine Suppliers

Global( 168)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Mainchem Co., Ltd.
+86-0592-6210733 CHINA 32452 55
Hefei TNJ Chemical Industry Co.,Ltd.
86-0551-65418684 18949823763
86-0551-65418684 China 1772 55
Tianjin Zhongxin Chemtech Co., Ltd.
022-66880086 CHINA 575 58
Xiamen AmoyChem Co., Ltd
+86 (0)592-605 1114 CHINA 6374 58
career henan chemical co
+86-371-86658258 CHINA 25796 58
Chemwill Asia Co.,Ltd.
86-21-51861608;;; CHINA 23957 58
Haihang Industry Co.,Ltd
+86 531 8582 1093 CHINA 8267 58
Hubei xin bonus chemical co. LTD
13657299721 CHINA 17424 58
Tianjin Zhongxin Chemtech Co., Ltd. 86(0)22-66880623
86(0)22-66880086 China 569 60
J & K SCIENTIFIC LTD. 400-666-7788 +86-10-82848833
+86-10-82849933; China 96815 76

View Lastest Price from N-Ethylmorpholine manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2018-12-20 N-Ethylmorpholine
US $1.00 / kg 1kg As required 1000kg career henan chemical co

N-Ethylmorpholine Spectrum

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