Boron tribromide
- Tribromoborane
- Boron bromide
- Boron(III) bromide
Boron tribromide | |
| |
| Formula | BBr3 |
| Structure | |
| Description | Colorless, fuming liquid with a sharp, irritating odor. |
| Uses | Manufacture of diborane. |
| Registry Numbers and Inventories. | |
| CAS | 10294-33-4 |
| EC (EINECS/ELINCS) | 233-657-9 |
| EC Index Number | 005-003-00-0 |
| EC Class | Reacts violently with water; Very toxic; Corrosive |
| EC Risk Phrase | R 14 26/28 35 40 |
| EC Safety Phrase | S 9 26 28 36/37/39 45 |
| RTECS | ED7400000 |
| RTECS class | Other |
| UN (DOT) | 2692 |
| Merck | 13,1337 |
| Beilstein/Gmelin | 2173 (G) |
| Swiss Giftliste 1 | G-7030 |
| Canada DSL/NDSL | DSL |
| US TSCA | Listed |
| Austrailia AICS | Listed |
| New Zealand | Listed |
| Japan ENCS (MITI) | Listed |
| Korea ECL | Listed |
| Properties. | |
| Formula | BBr3 |
| Formula mass | 250.54 |
| Melting point, °C | -46 |
| Boiling point, °C | 91.2 |
| Vapor pressure, mmHg | 61 (25 C) |
| Vapor density (air=1) | 8.6 |
| Critical temperature | 300 |
| Density | 2.645 g/cm3 (20 C) |
| Solubility in water | Decomposes |
| Viscosity | 0.731 cp (20 C) |
| Surface tension | 29.1 g/s2 |
| Refractive index | 1.00207 |
| Dielectric constant | 4.31 |
| Partition coefficient, pKow | 3.61 |
| Heat of fusion | 3.1 kJ/mol |
| Heat of vaporization | 31.4 kJ/mol |
| Hazards and Protection. | |
| Storage | Do not store in direct sunlight. Store in a tightly closed container. Keep under a nitrogen blanket. Store in a cool, dry, well-ventilated area away from incompatible substances. Poison room locked. |
| Handling | Wash thoroughly after handling. Wash hands before eating. Use only in a well ventilated area. Avoid breathing dust, vapor, mist, or gas. Do not get in eyes, on skin, or on clothing. Keep container tightly closed. Do not ingest or inhale. |
| 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 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. |
| Small spills/leaks | Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Clean up spills immediately, using the appropriate protective equipment. Provide ventilation. |
| Disposal code | 24 |
| Stability | Stable under normal temperatures and pressures. Reacts with water to form toxic fumes. |
| Incompatibilities | Acids, alcohols, alkali metals, steel, and water. |
| Decomposition | Carbon monoxide, carbon dioxide, hydrogen bromide, oxides of boron. |
| Fire. | ||||
| Flash Point,°C | -18 | |||
| 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. To extinguish fire use water spray, dry chemical, carbon dioxide, or chemical foam. | |||
| Fire potential | Not flammable | |||
| Hazards | Vapors may accumulate in confined areas (basement, tanks, hopper/tank cars, etc.). Substance will react with water (some violently), releasing corrosive and/or toxic gases. Reaction with water may generate much heat which will increase the concentration of fumes in the air. Contact with metals may evolve flammable hydrogen gas. | |||
| Combustion products | Toxic fumes of the chemical or hydrogen bromide may form in fires. | |||
| NFPA | Health | 3 | ||
| Flammability | 0 | |||
| Reactivity | 2 | |||
| Special | W | |||
| Health. | |
| Exposure limit(s) | TLV: 1 ppm; 10 mg/m3 as CEILING (ACGIH 1993-1994). NIOSH REL: C 1 ppm (10 mg/m3) |
| Poison_Class | 2 |
| Exposure effects | Significant ingestions or dermal exposures can be associated with weak, rapid pulse, cyanosis and abnormally low blood pressure. The patient may present with reduced body temperature, elevated body temperature or normal body temperature. Headache, lethargy, restlessness, weakness, CNS irritation, and/or seizures may occur with long term or repeated exposures. There is insufficient information concerning the reproductive effects of borates in humans. Adverse testicular effects and infertility have been reported in animals. <br>There have been limited animal studies which suggest decreased ovulation, fetotoxicity and developmental defects may occur with very high exposure levels. Maternal toxicity was present in some studies. |
| Ingestion | Causes gastrointestinal tract burns. Causes severe pain, nausea, vomiting, diarrhea, and shock. |
| Inhalation | Causes severe irritation of upper respiratory tract with coughing, burns, breathing difficulty, and possible coma. Causes chemical burns to the respiratory tract. Inhalation may be fatal as a result of spasm, inflammation, edema of the larynx and bronchi, chemical pneumonitis and pulmonary edema. |
| Skin | Causes skin burns. |
| Eyes | Causes eye burns. |
First aid |
|
| Ingestion | Do NOT 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 immediately. |
| Inhalation | Get medical aid immediately. Remove from exposure to fresh air immediately. If breathing is difficult, give oxygen. If breathing has ceased apply artificial respiration using oxygen and a suitable mechanical device such as a bag and a mask. |
| Skin | Get medical aid. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. Discard contaminated clothing in a manner which limits further exposure. Destroy contaminated 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. Do NOT allow victim to rub or keep eyes closed. Extensive irrigation is required (at least 30 minutes). |
| Transport. | ||
| UN number | 2692 | |
| Response guide | 157 | |
| Hazard class | 8 | |
| PRTC | T | |
| Packing Group | I | |
| USCG CHRIS Code | BTB | |
| HS Code | 2812 90 00 | |
| Std. Transport # | 4932010 | |