Hydrogen bromide
- Hydrogen bromide, anhydrous
Hydrogen bromide | |
| |
| Formula | HBr |
| Structure | |
| Description | A colorless to yellow aqueous liquid with a pungent odor. |
| Uses | In analytical chemistry & organic preparations. |
| Registry Numbers and Inventories. | |
| CAS | 10035-10-6 |
| EC (EINECS/ELINCS) | 233-113-0 |
| EC Index Number | 035-002-00-0 |
| EC Class | Corrosive; Irritant |
| EC Risk Phrase | R 34 37 |
| EC Safety Phrase | S 7/9 26 45 |
| RTECS | MW3850000 |
| RTECS class | Other |
| UN (DOT) | 1048 |
| Merck | 13,4799 |
| Beilstein/Gmelin | 620 (G) |
| Swiss Giftliste 1 | G-1308 |
| Canada DSL/NDSL | DSL |
| US TSCA | Listed |
| Austrailia AICS | Listed |
| New Zealand | Listed |
| Japan ENCS (MITI) | Listed |
| Korea ECL | Listed |
| Properties. | |
| Formula | BrH |
| Formula mass | 80.91 |
| Melting point, °C | -86 |
| Boiling point, °C | -66.7 |
| Vapor pressure, mmHg | 20 (25 C) |
| Vapor density (air=1) | 2.8 |
| Critical temperature | 89.8 |
| Critical pressure | 84 |
| Density | 1.49 g/cm3 |
| Solubility in water | Miscible |
| Viscosity | 0.815 cp (-74 C) |
| Surface tension | 27.1 g/s2 |
| Refractive index | 1.325 (10 C) |
| Heat of fusion | 2.41 kJ/mol |
| Heat of vaporization | 17.15 kJ/mol |
| Hazards and Protection. | |
| Storage | Store in a cool, dry place. Keep container closed when not in use. |
| Handling | Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. 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 protective gloves and clothing 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 | Clean up spills immediately, using the appropriate protective equipment. Sweep up, then place into a suitable container for disposal. |
| Stability | Stable under normal temperatures and pressures. |
| Incompatibilities | Strong oxidants. |
| Decomposition | Nitrogen oxides, carbon monoxide, irritating and toxic fumes and gases, carbon dioxide, nitrogen. |
| Fire. | ||||
| Flash Point,°C | 40 | |||
| 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, dry chemical, chemical foam, or alcohol-resistant foam. | |||
| Fire potential | Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. | |||
| Hazards | Pressurized container may explode and release toxic, irritating vapor. | |||
| Combustion products | If involved in a fire decomposes to produce irritants and toxic gases. | |||
| NFPA | Health | 3 | ||
| Flammability | 0 | |||
| Reactivity | 0 | |||
| Health. | |
| Exposure limit(s) | NIOSH REL: C 3 ppm (10 mg/m3) OSHA PEL: TWA 3 ppm (10 mg/m3) IDLH 30 ppm |
| Poison_Class | 2 |
| Exposure effects | Fever may occur with chronic intoxication. Acute intoxication can result in CNS depression and coma. Bromides cross the placenta and may be detected in the milk of nursing mothers. Case reports suggest that prenatal exposure may cause growth retardation, craniofacial abnormalities and developmental delay. |
| Ingestion | Ingestion of large amounts may cause gastrointestinal irritation. The toxicological properties of this substance have not been fully investigated. |
| Inhalation | May cause respiratory tract irritation. The toxicological properties of this substance have not been fully investigated. |
| Skin | May cause skin irritation. |
| Eyes | May cause eye irritation. |
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. |
| 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 | 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 | 1048 | |
| Response guide | 125 | |
| Hazard class | 2.3 | |
| PRTC | T | |
| USCG CHRIS Code | HBR | |
| Std. Transport # | 4920502 | |