Product Identification

Product Name

Carbamic acid ethyl ester

Synonyms

Carbamic acid ethyl ester
Ethyl urethane
Urethane

CAS

51-79-6

Formula

C3H7NO2

Molecular Weight

89.09

EINECS

200-123-1

RTECS

FA8400000

RTECS Class

Tumorigen; Drug; Mutagen; Reproductive Effector

Merck

12,10013

Beilstein/Gmelin

635810

Beilstein Reference

4-03-00-00040

EC Index Number

607-149-00-6

EC Class

Carcinogenic Category 2

Physical and Chemical Properties

Appearance

Odorless colorless crystals or white powder. Cooling saline taste.

Solubility in water

Very soluble

Melting Point

48-50

Boiling Point

182

Vapor Pressure

0.75 (25 C)

Density

1.11 g/cm3 (20 C)

Partition Coefficient

-.15

Heat Of Vaporization

42.0 kJ/mol

Heat Of Combustion

-1664 kJ/mol

Usage

Molten urethan is good solvent for various organic materials, prepn & modification of amino resins, as solubilizer & co-solvent for pesticides, fumigants.

Vapor Density

3.07

Refractive Index

1.4144 (51 C)

First Aid Measures

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.

Handling and Storage

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.

Hazards Identification

Inhalation

May cause respiratory tract irritation.

Skin

May cause skin irritation. Substance is readily absorbed through the skin.

Eyes

May cause eye irritation.

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.

Exposure Controls/Personal Protection

Personal 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.

Exposure Effects

Possible cancer hazard based on tests with laboratory animals.

Poison Class

1*

Fire Fighting Measures

Flash Point

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.

Accidental Release Measures

Small spills/leaks

Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Provide ventilation.

Stability and Reactivity

Incompatibilities

Acids, antipyrine, chloral hydrate, salol, thymol.

Stability

Stable under normal temperatures and pressures.

Decomposition

Nitrogen oxides, carbon monoxide, carbon dioxide, nitrogen.

Combustion Products

When heated, it emits toxic fumes of nox.