Product Identification

Product Name

4-Methylimidazole

Synonyms

4(5)-Methylimidazole

CAS

822-36-6

Formula

C4H6N2

Molecular Weight

82.1

EINECS

212-497-3

RTECS

NI7350000

RTECS Class

Tumorigen

Beilstein/Gmelin

1453

Beilstein Reference

5-23-05-00089

Physical and Chemical Properties

Appearance

Slightly yellow solid.

Solubility in water

Very soluble

Boiling Point

263

Vapor Pressure

0.02 (25 C)

Density

1.0416 g/cm3 (14.3 C)

pKa/pKb

6.51 (pKb)

Partition Coefficient

.38

Heat Of Vaporization

48.1 kJ/mol

Refractive Index

1.5037 (14 C)

First Aid Measures

Ingestion

Do NOT induce vomiting. 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 immediately. 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.

Handling and Storage

Storage

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. Use only in a well ventilated area. Do not get in eyes, on skin, or on clothing. Keep container tightly closed. Do not ingest or inhale.

Hazards Identification

Ingestion

May cause severe gastrointestinal tract irritation with nausea, vomiting and possible burns.

Inhalation

Effects may be delayed. May cause severe respiratory tract irritation. May cause burns to the respiratory tract.

Skin

Causes skin burns. Effects may be delayed.

Eyes

Causes eye burns.

Hazards

Contact with metals may evolve flammable hydrogen gas.

EC Risk Phrase

R 22 34

EC Safety Phrase

S 26 36/37/39 45

UN (DOT)

3263

Exposure Controls/Personal Protection

Personal 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 protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.

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.

Poison Class

3

Fire Fighting Measures

Flash Point

157

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. To extinguish fire use water spray, dry chemical, carbon dioxide, or chemical foam.

Fire Potential

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

Accidental Release Measures

Small spills/leaks

Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal. Avoid generating dusty conditions.

Stability and Reactivity

Incompatibilities

Acids, acid chlorides, acid anhydrides, strong oxidizing agents.

Stability

No data.

Decomposition

Nitrogen oxides, carbon monoxide, carbon dioxide.

Combustion Products

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

Transport Information

UN Number

3263

Hazard Class

8

Packing Group

I; II; III