Hydrogen Bromide
Hydrobromic Acid
- CAS
- 10035-10-6
- EC
- 233-113-0
- Sectors
- Pharma & Healthcare, Oil, Gas & Energy, Electronics & Solar PV
Hydrogen Bromide (CAS 10035-10-6) is an inorganic acid supplied as an aqueous solution, also known as hydrobromic acid, appearing as a colorless to light yellow liquid with a strong irritating odor, and used in the production of bromides for pharmaceuticals and agrochemicals, in petroleum hydrocracking, and in electronics etching. It has a density of 1.49 g/cm³ (liquid), boiling point -66.8°C, melting point -86.9°C, and is highly soluble in water (forming hydrobromic acid, up to 68% at 25°C). It has a sharp, irritating odor and is produced by reaction of bromine with hydrogen or hydrolysis of phosphorus tribromide; strong acid used in synthesis.
Typical Properties
| Molecular formula | BrH |
|---|---|
| Molecular weight | 80.91 g/mol |
| Appearance | colourless liquid with a strong irritating odour |
| Form | Solution |
| Color | Light yellow, brown |
| Odor | Sharp, irritating odor detectable at 2 ppm |
| Melting point | -87 °C |
| Boiling point | -67 °C |
| Density | 1.8 g/cm³ |
| Water solubility | soluble |
| Flash point | 40°C |
| pH | 3.01(1 mM solution);2.04(10 mM solution);1.08(100 mM solution) |
| GHS signal word | Danger · Compressed gas, Corrosive, Acute toxicity, Irritant / harmful, Health hazard |
| HS code | 28111990 |
| Grades available | Technical Grade |
Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.
Hydrogen Bromide
Applications
Used in the production of bromides for pharmaceuticals and agrochemicals; as a catalyst in alkylation reactions; in petroleum industry for hydrocracking; in organic synthesis for addition to alkenes; in analytical chemistry as reagent; in electronics for etching.
Safety & Risks
Highly corrosive, causes severe burns to skin, eyes, and lungs; toxic by inhalation leading to pulmonary edema. Reacts exothermically with bases and metals; non-flammable but supports combustion; use PPE, ventilate; Hazard Class 8 (corrosive) and 2.3 (toxic gas).
Packaging
Packaged in steel cylinders or glass bottles for solutions; store in cool, ventilated areas away from bases.