Diethylamine

  • N-Ethylethanamine
  • Diethamine
  • N,N-Diethylamine
Formula (C2H5)2NH
Structure
Description Water-white or colorless liquid with an ammonia-like odor.
Uses In petroleum industry, in flotation agents, dyes, pharmaceuticals.

Registry Numbers and Inventories.
CAS 109-89-7
EC (EINECS/ELINCS) 203-716-3
EC Index Number 612-003-00-X
EC Class Highly flammable; Harmful; Corrosive
EC Risk Phrase R 11 20/21/22 35
EC Safety Phrase S 3 16 26 29 36/37/39 45
RTECS HZ8750000
RTECS class Tumorigen; Mutagen; Primary Irritant
UN (DOT) 1154
Merck 13,3138
Beilstein/Gmelin 605268
Beilstein Reference 4-11-00-00122
Swiss Giftliste 1 G-1492
Canada DSL/NDSL DSL
US TSCA Listed
Austrailia AICS Listed
New Zealand Listed
Japan ENCS (MITI) Listed
Korea ECL Listed

Odor Threshold Odor threshold 20 ppb
Properties.
Formula C4H11N
Formula mass 73.14
Melting point, °C -50
Boiling point, °C 55.5
Vapor pressure, mmHg 194 (21 C)
Vapor density (air=1) 2.5
Evaporization number 16.9 (butyl acetate = 1)
Critical temperature 224
Critical pressure 36.6
Density 0.7048 g/cm3 (20 C)
Solubility in water Miscible
Viscosity 0.319 cp at 25C
Surface tension 20.19 g/s2 (20 C)
Refractive index 1.3864 (20 C)
pKa/pKb 2.91 (pKb)
Partition coefficient, pKow 0.58
Heat of fusion 6.2 kJ/mol
Heat of vaporization 32.0 kJ/mol
Heat of combustion -3038 kJ/mol

Hazards and Protection.
Storage Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a tightly closed container. Keep from contact with oxidizing materials. Store in a cool, dry, well-ventilated area away from incompatible substances. Keep away from organic halogens. Keep away from acids.
WHMIS B2 D1B E
Handling Use with adequate ventilation. Use spark-proof tools and explosion proof equipment. Avoid contact with eyes, skin, and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Avoid ingestion and inhalation. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
Protection Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators a full facepiece respirator with an ammonia/methylamine cartridge may be worn up to 50 times the exposure limit or the maximum use concentration specified by the appropriate regulatory agency or respirator supplier, whichever is lowest. For emergencies or instances where the exposure levels are not known, use a full-facepiece positive-pressure, air-supplied respirator. A recommended cartridge is not specifically approved for this substance. Organic vapor cartridges are also approved for this material, but they have a short service life (i.e., less than 30 minutes at concentrations ten times the exposure limits).
Small spills/leaks Vacuum or sweep up material and place into a suitable disposal container. Use water spray to dilute spill to a non-flammable mixture. Use water spray to disperse the gas/vapor. Remove all sources of ignition. Absorb spill using an absorbent, non-combustible material such as earth, sand, or vermiculite.
Stability Stable under normal temperatures and pressures.
Incompatibilities Strong oxidizers, acids, cellulose nitrate, some metals and dicyanofuroxan. N-nitrosamines, many of which are known to be potent carcinogens, may be formed when this product comes in contact with nitrous acid, nitrates, or atmospheres with high nitrous oxide concentrations.
Decomposition Burning may produce ammonia, carbon monoxide, carbon dioxide, nitrogen oxides.

Fire.
Flash Point,°C -28
Autoignition, °C 312
Upper exp. limit, % 10.1
Lower exp. limit, % 1.8
Fire fighting Do not extinguish fire unless flow can be stopped. Use water in flooding quantities as fog. Solid streams of water may be ineffective. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible. Use alcohol foam, dry chemical or carbon dioxide. Use water spray to knock-down vapors.
Fire potential Very flammable. Enter with great care.
Hazards Vapors are heavier than air and may travel to a source of ignition and flash back.
Combustion products Vapors are irritating Vapors are heavier than air and may travel considerable distance to a source of ignition and flash back.
NFPA Health 3
  Flammability 3  
  Reactivity 0  

Health.
Exposure limit(s) OSHA PEL: TWA 25 ppm (75 mg/m3) NIOSH REL: TWA 10 ppm (30 mg/m3) ST 25 ppm (75 mg/m3) NIOSH IDLH: 200 ppm
Poison_Class 3
Exposure effects Repeated contact of eyes with vapors may result in swelling of the eyes and foggy vision. Chronic exposure may affect kidney and liver. Animal studies have shown target organ effects on the heart.
   Ingestion Corrosive. Harmful if swallowed. May cause burns of the mouth, throat and stomach with severe abdominal pain and collapse. Ingestion may cause death if not treated promptly. Ingestion has been linked to cardiovascular effects in laboratory animals.
   Inhalation Corrosive. Vapors irritate the respiratory tract causing coughing, chest pain, or immediate or delayed breathing difficulties. Exposure to moderately high concentrations of the vapor may cause severe pulmonary edema. Experimental animals exposed to 100ppm showed severe heart tissue degeneration.
   Skin Corrosive. Contact can cause irritation with redness, pain, and possible skin burns. Covered contact with wet clothing can cause severe skin burns. May be absorbed through the skin.
   Eyes Corrosive. Vapors irritate the eyes, causing tears, redness, pain, blurred vision. Corneal edema may occur with symptoms of blue haze or fogginess around lights. Liquid contact is an emergency and will produce serious eye injury, possibly blindness.

First aid
 
   Ingestion DO NOT INDUCE VOMITING. Give large quantities of water. Never give anything by mouth to an unconscious person. Call a physician immediately. If swallowed, DO NOT INDUCE VOMITING. Give large quantities of water. Never give anything by mouth to an unconscious person. Get medical attention immediately.
   Inhalation Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
   Skin Get medical aid. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
   Eyes 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 1154
Response guide 132
Hazard class 3
Packing Group II  
USCG CHRIS Code DEN  
USCG Compatatibility Group 7 Aliphatic amines
HS Code 2921 12 00  
Std. Transport # 4907815  
IMO Chemical Code 17
IMO Pollution Category C
IMO Hazard code S/P