Product Identification
【Product Name】4-Methylacetonitrile
【Synonyms】p-Methylbenzyl cyanide ；对甲基苯乙腈
【CAS】2947-61-7
【Formula】C9H9N
【Molecular Weight】131.18
【EINECS】220-963-2
【Beilstein/Gmelin】1099645
【Beilstein Reference】4-09-00-01796
【EC Class】irritant

Physical and Chemical Properties
【Appearance】Colorless - light yellow liquid.
【Solubility in water】Slightly soluble
【Melting Point】18℃
【Boiling Point】243℃
【Vapor Pressure】0.03
【Density】0.9922 g/cm3 (22℃)
【Partition Coefficient】1.91
【Heat Of Vaporization】48.0 kJ/mol
【Refractive Index】1.5190 (20℃)

First Aid Measures
【Ingestion】Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
【Inhalation】Remove from exposure to fresh air immediately.
【Skin】Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
【Eyes】Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids.

Handling and Storage
【Storage】Store in a cool, dry place. Store in a tightly closed container.
【Handling】Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes. Use only in a chemical fume hood.

Hazards Identification
【Ingestion】Harmful if swallowed.
【Inhalation】Harmful if inhaled.
【Skin】May cause skin irritation. Harmful if absorbed through the skin.
【Eyes】Lachrymator.
【Hazards】When heated, vapors may form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards.
【EC Risk Phrase】R 20/21/22 36
【EC Safety Phrase】S 26 36/37/39
【UN (DOT)】2810

Exposure Controls/Personal Protection
【Personal Protection】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.

Fire Fighting Measures
【Flash Point】106℃
【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】Combustible material: may burn but does not ignite ily.

Accidental Release Measures
【Small spills/leaks】Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container.

Stability and Reactivity
【Disposal Code】6
【Stability】No data.
【Incompatibilities】Strong oxidizing agents, strong reducing agents, strong acids, strong bases.
【Decomposition】Nitrogen oxides, carbon monoxide, carbon dioxide.
【Combustion Products】Fire may produce irritating, corrosive and/or toxic gases.

Transport Information
【UN Number】2810
【Hazard Class】6.1
【Packing Group】I; II; III
【HS Code】2926 90 95