Product Identification

Product Name

Monoethylamine

Synonyms

IMO Gas Code
4-Isothiocyanato-N,N-dimethylaniline
Aminoethane
Ethanamine
Ethylamine
Monoethylamine
p-(Dimethylamino)phenyl isothiocyanate

CAS

75-04-7

CAS

2131-64-8

Formula

C2H7N

Formula

C9H10N2S

Molecular Weight

178.26

Molecular Weight

45.08

EINECS

200-834-7

EINECS

218-360-4

RTECS

NX8500000

RTECS

KH2100000

RTECS Class

Other

RTECS Class

Primary Irritant

Merck

13,3797

Beilstein/Gmelin

388270

Beilstein/Gmelin

505933

Beilstein Reference

4-04-00-00307

Beilstein Reference

4-13-00-00173

EC Index Number

612-002-00-4

EC Class

Extremely flammable; Irritant

Physical and Chemical Properties

Appearance

Colorless liquid with an ammonia-like odor.

Solubility in water

Miscible

Melting Point

70

Melting Point

-81.1

Boiling Point

90 - 95 (0.1 torr)

Boiling Point

17

Vapor Pressure

50 (20 C)

Density

0.706 g/cm3 (0 C)

pKa/pKb

3.13 (pKb)

Partition Coefficient

-.13

Heat Of Vaporization

27/34 kJ/mol

Heat Of Combustion

-1713.3 kJ/mol

Usage

In resin chemistry, stabilizer for rubber latex, intermediate for dyestuffs & medicinals, in oil refining, in organic synthesis.

Vapor Density

1.56

Odor threshold

0.27 ppm

Refractive Index

1.3663 (20C)

First Aid Measures

Ingestion

If victim is conscious and alert, give 2-4 cupfuls of milk or water. Get medical aid immediately. Do NOT induce vomiting. Allow the victim to rinse his mouth and then to drink 2-4 cupfuls of water, and seek medical advice.

Ingestion

Seek medical assistance.

Inhalation

TOXIC; inhalation, ingestion, or skin contact with material may cause severe injury or death. Effects of contact or inhalation may be delayed.

Inhalation

Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.

Inhalation

Move victim to fresh air. Apply artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; induce artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult.

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.

Skin

Remove and isolate contaminated clothing and shoes. Immediately flush with running water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin.

Skin

Contact with molten substance may cause severe burns to skin and eyes. See Inhalation.

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.

Eyes

See Inhalation.

Eyes

Immediately flush with running water for at least 20 minutes.

Handling and Storage

Storage

Keep away from heat, sparks, and flame. Keep away from sources of ignition. Do not store in direct sunlight. Keep container closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances Flammables-area. Keep away from acids. Do not store in aluminum containers. Store in iron, steel, or glass containers.

Handling

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.

Hazards Identification

Ingestion

See Inhalation.

Inhalation

May cause asthmatic attacks due to allergic sensitization of the respiratory tract. May cause severe irritation of the respiratory tract with possible burns. Vapors may cause dizziness or suffocation.

Skin

Harmful if absorbed through the skin. Continued contact can cause tissue necrosis. Causes skin irritation and possible burns.

Eyes

May cause 'blue haze' or 'halo vision'. Causes severe eye irritation and possible burns. Contact with the eyes may cause corneal damage. May cause chemical conjunctivitis.

Ingestion

Harmful if swallowed. Causes gastrointestinal irritation with nausea, vomiting and diarrhea. Ingestion may cause severe burns of the mouth and stomach.

Hazards

Vapor is heavier than air. May travel a considerable distance to a source of ignition and flash back.

Hazards

Contact with metals may evolve flammable hydrogen gas.

EC Risk Phrase

R 12 36/37

EC Risk Phrase

R 23/24/25 36/37/38

EC Safety Phrase

S 16 26 29

EC Safety Phrase

S 26 36/37/39 45

UN (DOT)

2270

UN (DOT)

2811

Exposure Controls/Personal Protection

Personal Protection

Wear appropriate protective gloves, clothing and goggles.

Personal Protection

Wear appropriate protective gloves, clothing and goggles. Always wear thermal protective clothing when handling refrigerated/cryogenic liquids.

Respirators

Wear positive pressure self-contained breathing apparatus (SCBA).

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.

Exposure Effects

Prolonged or repeated skin contact may cause dermatitis. Effects may be delayed. Chronic exposure may cause lung damage. Prolonged exposure may cause liver, kidney, and heart damage.

Exposure limit(s)

OSHA PEL: TWA 10 ppm (18 mg/m3) NIOSH REL: TWA 10 ppm (18 mg/m3) NIOSH IDLH: 600 ppm

Poison Class

3

Fire Fighting Measures

Flash Point

-17

Autoignition

375

Fire Fighting

Extinguish using agent most appropriate for surrounding fire.

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. 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.

Upper exp. limit

14

Lower exp. limit

3.5

Fire Potential

Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.

Fire Potential

Very flammable, combustion imminent.

Accidental Release Measures

Small spills/leaks

Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Clean up spills immediately, using the appropriate protective equipment. For small spills, cover with sodium bisulfate and spray with water.

Small spills/leaks

ELIMINATE all ignition sources. Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS.

Stability and Reactivity

Incompatibilities

Oxidizing agents, strong acids, aluminum, copper, halogens, nitrates nitric acid, perchlorates, permanganates, peroxides, vinyl acetate zinc, isocyanates, tin, aldehydes (e.g. acetaldehyde, acrolein chloral hydrate, formaldehyde), ketones (e.g. acetone, acetophenone MEK, MIBK), cellulose nitrate, hypochlorite, chlorine, ethylamine with nitrate was significantly mutagenic, galvanized surfaces cleaning agents such as chromerge (sulfuric acid/dichromate) and aqua regia.

Stability

Stable under normal temperatures and pressures.

Decomposition

Nitrogen oxides, carbon monoxide, irritating and toxic fumes and gases, carbon dioxide, nitrogen, ammonia, nitriles, cyanic acid isocyanates, cyanogens, nitrosamines, amides, carbamates.

Combustion Products

Fire may produce irritating, corrosive and/or toxic gases.

Combustion Products

Irritating and toxic oxides of nitrogen may be formed.

Transport Information

UN Number

2270

UN Number

2811

Hazard Class

2.1