Product Identification
【Product Name】Methylethylbromoomethane
【Synonyms】sec-Butyl bromide 2-溴丁烷
【CAS】78-76-2
【Formula】C4H9Br
【Molecular Weight】137.03
【EINECS】201-140-7
【RTECS】EJ6228000
【RTECS Class】Tumorigen; Mutagen
【Merck】13,1553
【Beilstein/Gmelin】505949
【Beilstein Reference】4-01-00-00261
【EC Class】flammable, dangerous for the environment

Physical and Chemical Properties
【Appearance】Clear, colorless liquid, pleasant odor.
【Solubility in water】Insoluble
【Melting Point】-112
【Boiling Point】91
【Vapor Pressure】63 (25 C)
【Density】1.258 g/cm3 (20 C)
【Partition Coefficient】2.56
【Heat Of Vaporization】30.8 kJ/mol
【Usage】Synthesis, alkylating agent.
【Vapor Density】4.7
【Saturation Concentration】92000 ppm (9.2%) at 25 C (calculated)
【Refractive Index】1.4342

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.
【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】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. Wash clothing before reuse.
【Eyes】Immediately 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. Keep container closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Flammables-area.
【Handling】Wash thoroughly after handling. Wash hands before eating. Remove contaminated clothing and wash before reuse. Use only in a well ventilated area. Ground and bond containers when transferring material. Use spark-proof tools and explosion proof equipment. Avoid contact with skin and eyes. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Avoid contact with heat, sparks and flame. Avoid ingestion and inhalation. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or flames.

Hazards Identification
【Ingestion】Causes gastrointestinal irritation with nausea, vomiting and diarrhea. May cause central nervous system depression.
【Inhalation】Causes respiratory tract irritation. Exposure produces central nervous system depression. Inhalation of vapor may cause severe respiratory tract irritation. Causes narcotic effects including headache, dizziness, weakness, unconsciousness, and possible death. Vapors may cause dizziness or suffocation.
【Skin】Causes skin irritation.
【Eyes】Causes eye irritation. Vapors may cause eye irritation.
【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 hazard indoors, outdoors or in sewers.
【EC Risk Phrase】R 10
【EC Safety Phrase】S 16 23 24/25
【UN (DOT)】2339

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】21
【Autoignition】265
【Fire Fighting】Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Will burn if involved in a fire. Use water spray to keep fire-exposed containers cool. Containers may explode in the heat of a fire. Extinguishing media: For small fires, use dry chemical, carbon dioxide, water spray or alcohol-resistant foam. For large fires, use water spray, fog, or alcohol-resistant foam. Use water spray to cool fire-exposed containers. Water may be ineffective. Do NOT use straight streams of water.
【Upper exp. limit】6.6
【Lower exp. limit】2.6
【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. Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, using the appropriate protective equipment. Scoop up with a nonsparking tool, then place into a suitable container for disposal. Remove all sources of ignition. Use a spark-proof tool. Provide ventilation. A vapor suppressing foam may be used to reduce vapors.

Stability and Reactivity
【Disposal Code】2
【Stability】Stable under normal temperatures and pressures.
【Incompatibilities】Strong oxidizing agents.
【Decomposition】Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide, hydrogen bromide.
【Combustion Products】Fire will produce irritating, corrosive and/or toxic gases.

Transport Information
【UN Number】2339
【Hazard Class】3
【Packing Group】II
【HS Code】2903 30 36