Product Identification
【Product Name】2,3-Dimethylthiophene ；2,3-二甲基噻吩
【CAS】632-16-6
【Formula】C6H8S
【Molecular Weight】112.19
【EINECS】211-170-2
Physical and Chemical Properties
【Appearance】Colorless liquid.
【Solubility in water】Insoluble
【Melting Point】-49℃
【Boiling Point】141.6℃
【Vapor Pressure】6.4 torr (25℃)
【Density】1.0021 g/cm3 (20℃)
【Partition Coefficient】2.78
【Refractive Index】1.5192 (20oC)
First Aid Measures
【Ingestion】Get medical aid. Wash mouth out with water.
【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. 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. 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. Flammables-area.
Hazards Identification
【Ingestion】Harmful if swallowed. May cause irritation of the digestive tract.
【Inhalation】Harmful if inhaled. May cause respiratory tract irritation.
【Skin】May cause irritation. Harmful if absorbed through the skin.
【Eyes】may cause irritation.
【EC Risk Phrase】R: 11 20/21/22
【EC Safety Phrase】S: 9 16 33 36/37
Exposure Controls/Personal Protection
【Personal Protection】Chemical protective ggles, chemically resistive gloves, protective work clothing.
【Respirators】Follow the OSHA respirator regulations found in 29 CFR 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】1
【Fire Fighting】Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Use dry chemical or foam.
【Fire Potential】Will burn if involved in a fire. Flammable liquid and vapor.
Accidental Release Measures
【Small spills/leaks】Absorb spill with inert material (e.g. vermiculite, sand or earth), then place in suitable container. Remove all sources of ignition. Use a spark-proof tool.
Stability and Reactivity
【Incompatibilities】Strong oxidizing agents, strong bases.
【Decomposition】Carbon monoxide, oxides of sulfur, carbon dioxide.