Acetylene tetrabromide
- sym-Tetrabromoethane
- 1,1,2,2-Tetrabromoethane
Acetylene tetrabromide | |
| |
| Formula | Br2CHCHBr2 |
| Structure | |
| Description | Pale-yellow liquid with a pungent odor similar to camphor or iodoform. A solid below 0 deg c. |
| Uses | Separating minerals by specific gravity, solvent for fats, oils, and waxes, solvent in microscopy. |
| Registry Numbers and Inventories. | |
| CAS | 79-27-6 |
| EC (EINECS/ELINCS) | 201-191-5 |
| EC Index Number | 602-016-00-9 |
| EC Class | Very toxic; Irritant; Dangerous for the Environment |
| EC Risk Phrase | R 26 36 52/53 |
| EC Safety Phrase | S 24 27 45 61 |
| RTECS | KI8225000 |
| RTECS class | Tumorigen; Mutagen; Primary Irritant |
| UN (DOT) | 2504 |
| Merck | 12,9328 |
| Beilstein/Gmelin | 1098321 |
| Beilstein Reference | 4-01-00-00162 |
| Swiss Giftliste 1 | G-2914 |
| Canada DSL/NDSL | DSL |
| US TSCA | Listed |
| Austrailia AICS | Listed |
| New Zealand | Listed |
| Japan ENCS (MITI) | Listed |
| Korea ECL | Listed |
| Properties. | |
| Formula | C2H2Br4 |
| Formula mass | 345.7 |
| Melting point, °C | -1 |
| Boiling point, °C | 244 |
| Vapor pressure, mmHg | 0.05 (25 C) |
| Vapor density (air=1) | 11.9 |
| Saturation Concentration | 26 ppm at 20 C (calculated) |
| Density | 2.9656 g/cm3 (20 C) |
| Solubility in water | 650 mg/L |
| Surface tension | 47.1 g/s2 (30 C) |
| Refractive index | 1.63263 (20 C) |
| Partition coefficient, pKow | 3.67 |
| Heat of vaporization | 46.1 kJ/mol |
| Hazards and Protection. | |
| Storage | Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Keep away from metals. |
| Handling | Wash thoroughly after handling. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation. |
| Protection | Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to minimize contact with skin. |
| 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. |
| 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. Provide ventilation. |
| Stability | Stable under normal shipping and handling conditions. |
| Incompatibilities | Strong oxidizers, strong bases, and metals such as aluminum, magnesium, and zinc in the presence of steam. Will attack some forms of plastics, rubber,and coatings. |
| Decomposition | Irritating and toxic fumes and gases, hydrogen bromide, bromine fumes, carbonyl bromide. |
| Fire. | ||||
| Flash Point,°C | 97 | |||
| Autoignition, °C | 335 | |||
| Upper exp. limit, % | 24.5 | |||
| 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. Runoff from fire control or dilution water may cause pollution. Extinguishing media: Substance is noncombustible; use agent most appropriate to extinguish surrounding fire. | |||
| Fire potential | May burn but does not ignite readily. | |||
| Hazards | Containers may explode when heated. | |||
| Combustion products | When heated, it emits highly toxic fumes of carbonyl bromide. | |||
| NFPA | Health | 3 | ||
| Flammability | 0 | |||
| Reactivity | 1 | |||
| Health. | |
| Exposure limit(s) | OSHA PEL: TWA 1 ppm (14 mg/m3) NIOSH REL: See Appendix D NIOSH IDLH: 8 ppm |
| Poison_Class | 2 |
| Exposure effects | |
| Ingestion | Causes gastrointestinal irritation with nausea, vomiting and diarrhea. May cause liver and kidney damage. |
| Inhalation | Causes respiratory tract irritation. May cause liver and kidney damage. May cause lung damage. May cause headache, loss of appetite, nausea, fatigue, abdominal pain, darkened urine and jaundice.. |
| Skin | May be absorbed through damaged or abraded skin in harmful amounts. Exposure may cause irritation and possible burns. Causes symptoms similar to those of inhalation. |
| Eyes | Contact with eyes may cause severe irritation, and possible eye burns. |
First aid |
|
| Ingestion | 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 | 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 immediately. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. |
| Eyes | Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately. |
| Transport. | ||
| UN number | 2504 | |
| Response guide | 159 | |
| Hazard class | 6.1 | |
| Packing Group | III | |
| HS Code | 2903 30 36 | |