N-Ethylmorpholine

  • 4-Ethylmorpholine
Formula C6H13NO
Structure
Description A colorless liquid with a strong ammonia-like odor.
Uses Urethane foam catalyst.

Registry Numbers and Inventories.
CAS 100-74-3
EC (EINECS/ELINCS) 202-885-0
EC Class flammable, harmful
EC Risk Phrase R 10 21/22 34
EC Safety Phrase S 16 26 36/37/39 45
RTECS QE4025000
RTECS class Mutagen; Primary Irritant
UN (DOT) 1993
Beilstein/Gmelin 102969
Beilstein Reference 4-27-00-00023
Swiss Giftliste 1 G-1820
Canada DSL/NDSL DSL
US TSCA Listed
Austrailia AICS Listed
New Zealand Listed
Japan ENCS (MITI) Listed
Korea ECL Listed

Odor Threshold Odor threshold 25 ppm
Properties.
Formula C6H13NO
Formula mass 115.18
Melting point, °C -63
Boiling point, °C 138
Vapor pressure, mmHg 6
Vapor density (air=1) 4
Critical temperature 353
Critical pressure 39.0
Density 0.9166 g/cm3 (15 C)
Solubility in water Miscible
Viscosity 1.08 MPa s (20 C)
Refractive index 1.4388 (20 C)
pKa/pKb 6.33 (pKb)
Partition coefficient, pKow 0.18
Heat of vaporization 42.33 kJ/mol
Heat of combustion -3993 kJ/mol

Hazards and Protection.
Storage Keep away from heat, sparks, and flame. Keep away from sources of ignition. Flammables-area.
Handling Ground and bond containers when transferring material. Use spark-proof tools and explosion proof equipment. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Avoid contact with heat, sparks and flame. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
Protection Eyes: Wear chemical goggles. Wear safety glasses and chemical goggles if splashing is possible. Skin: Wear appropriate protective gloves and clothing to prevent skin exposure. Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to minimize contact with skin.
Respirators A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use. Wear a NIOSH/MSHA or European Standard EN 149 approved full-facepiece airline respirator in the positive pressure mode with emergency escape provisions.
Small spills/leaks Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, using the appropriate protective equipment. Remove all sources of ignition. Use a spark-proof tool. A vapor suppressing foam may be used to reduce vapors.
Disposal code 5
Stability Stable under normal temperatures and pressures.
Incompatibilities Strong oxidizing agents.
Decomposition Nitrogen oxides, carbon monoxide, irritating and toxic fumes and gases, carbon dioxide, nitrogen.

Fire.
Flash Point,°C 31
Fire fighting Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Will burn if involved in a fire. Use water spray to keep fire-exposed containers cool. Containers may explode in the heat of a fire. Extinguishing media: For small fires, use dry chemical, carbon dioxide, water spray or alcohol-resistant foam. For large fires, use water spray, fog, or alcohol-resistant foam. Use water spray to cool fire-exposed containers. Water may be ineffective. Use agent most appropriate to extinguish fire. Do NOT use straight streams of water.
Fire potential Fire potential:a dangerous fire hazard.
Hazards Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers.
Combustion products Irritating vapors and toxic gases, such as ammonia, nitrogen oxides, and carbon monoxide, may be formed when involved in fire.
NFPA Health 2
  Flammability 3  
  Reactivity 0  

Health.
Exposure limit(s) NIOSH REL: TWA 5 ppm (23 mg/m3) [skin] OSHA PEL: TWA 20 ppm (94 mg/m3) [skin] IDLH 100 ppm
Poison_Class 4
Exposure effects Effects may be delayed.
   Ingestion May cause gastrointestinal irritation with nausea, vomiting and diarrhea. Ingestion of large amounts may cause CNS depression.
   Inhalation Aspiration may lead to pulmonary edema. Vapors may cause dizziness or suffocation. May cause burning sensation in the chest.
   Skin May cause irritation and dermatitis. May cause cyanosis of the extremities.
   Eyes May cause chemical conjunctivitis and corneal damage.

First aid
 
   Ingestion Do NOT induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Get medical aid immediately. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
   Inhalation Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. DO NOT use mouth-to-mouth respiration.
   Skin Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Remove contaminated clothing and shoes.
   Eyes Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Transport.
UN number 1993
Response guide 128
Hazard class 3
Packing Group I; II; III  
USCG CHRIS Code EMN  
HS Code 2934 99 90  
Std. Transport # 4936579