Product Identification
【Product Name】2-Chlorothiophene ；2-氯噻吩
【Synonyms】2-Thienyl chloride
【CAS】96-43-5
【Formula】C4H3ClS
【Molecular Weight】118.59
【EINECS】202-505-3
【Beilstein/Gmelin】104652
【Beilstein Reference】5-17-01-00303
【EC Class】flammable

Physical and Chemical Properties
【Appearance】Colorless to brown liquid. With a stench.
【Solubility in water】Insoluble
【Melting Point】-1℃
【Boiling Point】127℃
【Vapor Pressure】13 (25℃)
【Density】1.2838 g/cm3 (14.2℃)
【Partition Coefficient】2.79
【Heat Of Vaporization】35.1 kJ/mol
【Refractive Index】1.5487 (20℃)

First Aid Measures
【Ingestion】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】Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
【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 immediately.

Handling and Storage
【Storage】Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Refrigerator/flammables.
【Handling】Wash thoroughly after handling. Use only in a well ventilated area. Use spark-proof tools and explosion proof equipment. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.

Hazards Identification
【Ingestion】The toxicological properties of this substance have not been fully investigated.
【Inhalation】The toxicological properties of this substance have not been fully investigated.
【Skin】No information regarding skin irritation and other potential effects was found.
【Eyes】No information regarding eye irritation and other potential effects was found.
【Hazards】Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will sp along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion and poison hazard indoors, outdoors or in sewers.
【EC Risk Phrase】R 10 23/24/25
【EC Safety Phrase】S 16 23 36/37 45
【UN (DOT)】1992

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.

Fire Fighting Measures
【Flash Point】22℃
【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. Extinguishing media: Use water spray to cool fire-exposed containers. Use foam, dry chemical, or carbon dioxide. Water may be ineffective.
【Fire Potential】HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames.

Accidental Release Measures
【Small spills/leaks】Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Remove all sources of ignition. Use a spark-proof tool.

Stability and Reactivity
【Stability】Stable under normal temperatures and pressures.
【Incompatibilities】Strong bases - strong oxidizing agents.
【Decomposition】Hydrogen chloride, phosgene, carbon monoxide, oxides of sulfur, carbon dioxide, hydrogen sulfide.
【Combustion Products】Fire will produce irritating, corrosive and/or toxic gases.

Transport Information
【UN Number】1992
【Hazard Class】3
【Packing Group】I; II; III
【HS Code】2934 99 90