Product Identification
【Product Name】2,5-Dimethyl pyrazine
【Synonyms】2,5-Dimethylpiazine; 2,5-二甲基吡嗪
【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℃)
【Density】1.0079 g/cm3 (0℃)
【pKa/pKb】12.03 (pKb)
【Partition Coefficient】.64
【Heat Of Vaporization】37.6 kJ/mol
【Vapor Density】3.7
【Refractive Index】1.4980 (20℃)

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 ggles 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