Product Identification

Product Name

2,5-Dimethyl pyrazine

Synonyms

2,5-Dimethylpiazine

CAS

123-32-0

Formula

C6H8N2

Molecular Weight

108.14

EINECS

204-618-3

RTECS

UQ2800000

RTECS Class

Mutagen

Beilstein/Gmelin

107052

Beilstein Reference

5-23-05-00403

EC Class

harmful

Physical and Chemical Properties

Appearance

Clear, colorless to pale yellow liquid.

Solubility in water

Soluble

Melting Point

15

Boiling Point

155

Vapor Pressure

4 (25 C)

Density

1.0079 g/cm3 (0 C)

pKa/pKb

12.03 (pKb)

Partition Coefficient

.64

Heat Of Vaporization

37.6 kJ/mol

Vapor Density

3.7

Refractive Index

1.4980 (20 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.

Inhalation

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

Skin

Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists.

Eyes

Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Handling and Storage

Storage

Keep away from sources of ignition. Store in a cool, dry place. Store in a tightly closed container.

Handling

Wash thoroughly after handling. Wash hands before eating. Use only in a well ventilated area. Avoid breathing dust, vapor, mist, or gas. Do not get on skin or in eyes. Avoid ingestion and inhalation.

Hazards Identification

Ingestion

Harmful if swallowed. May cause gastrointestinal irritation with nausea, vomiting and diarrhea.

Inhalation

Causes respiratory tract irritation.

Skin

Causes skin irritation.

Eyes

Causes eye irritation.

EC Risk Phrase

R 22

EC Safety Phrase

S 22 36/37

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

4 (Substances and products that must be considered harmful)

Fire Fighting Measures

Flash Point

64

Fire Fighting

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

Fire Potential

Will burn if involved in a fire.

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. Scoop up with a nonsparking tool, then place into a suitable container for disposal.

Stability and Reactivity

Disposal Code

3

Stability

Stable under normal temperatures and pressures.

Incompatibilities

Strong oxidizing agents and strong acids.

Decomposition

Nitrogen oxides, carbon monoxide, carbon dioxide.

Transport Information

HS Code

2933 99 90