Ethyl carbamate

  • Carbamic acid ethyl ester
  • Ethyl urethane
  • Urethane
Formula
NH2COOC2H5
Structure
Description
Odorless colorless crystals or white powder. Cooling saline taste.
Uses
Molten urethan is good solvent for various organic materials, prepn & modification of amino resins, as solubilizer & co-solvent for pesticides, fumigants.

Registry Numbers and Inventories.
CAS
51-79-6
EC (EINECS/ELINCS)
200-123-1
EC Index Number
607-149-00-6
EC Class
Carcinogenic Category 2
RTECS
FA8400000
RTECS class
Tumorigen; Drug; Mutagen; Reproductive Effector
Merck
12,10013
Beilstein/Gmelin
635810
Beilstein Reference
4-03-00-00040
RCRA
U238
Swiss Giftliste 1
G-2096
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
C3H7NO2
Formula mass
89.09
Melting point, °C
48-50
Boiling point, °C
182
Vapor pressure, mmHg
0.75 (25 C)
Vapor density (air=1)
3.07
Density
1.11 g/cm3 (20 C)
Solubility in water
Very soluble
Viscosity
2.357 cp (60 C)
Surface tension
31.47 g/s2 (60 C)
Refractive index
1.4144 (51 C)
Partition coefficient, pKow
-0.15
Heat of fusion
16.8 kJ/mol
Heat of vaporization
42.0 kJ/mol
Heat of combustion
-1664 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. Store in a cool, dry, well-ventilated area away from incompatible substances.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Avoid contact with heat, sparks and flame. Avoid ingestion and inhalation. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
Protection
Chemical splash goggles in compliance with OSHA regulations are advised; however, OSHA regulations also permit other type safety glasses. Whre chemical resistant gloves. To prevent repeated or prolonged skin contact, wear impervious clothing and boots.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Provide ventilation.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Acids, antipyrine, chloral hydrate, salol, thymol.
Decomposition
Nitrogen oxides, carbon monoxide, carbon dioxide, nitrogen.

Fire.
Flash Point,°C
92
Fire fighting
Fires involving this material can be controlled with a dry chemical, carbon dioxide or Halon extinguisher. A water spray may also be used.
Fire potential
This chemical is combustible.
Combustion products
When heated, it emits toxic fumes of nox.

Health.
Carcinogin
I-2B, N-2, CP65
Poison_Class
1*
Exposure effects
Possible cancer hazard based on tests with laboratory animals.
   Ingestion
May cause irritation of the digestive tract. May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May cause liver and kidney damage. May cause central nervous system depression. May cause bone marrow depression and possible focal degeneration of the brain.
   Inhalation
May cause respiratory tract irritation.
   Skin
May cause skin irritation. Substance is readily absorbed through the skin.
   Eyes
May cause eye irritation.

First aid
 
   Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
   Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
   Eyes
First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.

Transport.
USCG CHRIS Code
ECM