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Hydrogen bromide

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Identification
Molecular formula
HBr
CAS number
10035-10-6
IUPAC name
hydrogen bromide
State
State

At room temperature, hydrogen bromide is typically found as a gas. When dissolved in water, it forms hydrobromic acid, a strong acid used in chemical synthesis and laboratory work.

Melting point (Celsius)
-86.90
Melting point (Kelvin)
186.30
Boiling point (Celsius)
-66.80
Boiling point (Kelvin)
206.30
General information
Molecular weight
80.91g/mol
Molar mass
80.9120g/mol
Density
3.3070g/cm3
Appearence

Hydrogen bromide is a colorless gas at room temperature. In its anhydrous state, it appears in aqueous solutions as a colorless liquid. It may emit a sharp, irritating odor.

Comment on solubility

Solubility of Hydrogen Bromide (HBr)

Hydrogen bromide (HBr) is a fascinating chemical compound known for its high solubility in water. When we consider solubility, particularly for this compound, there are a few key points to highlight:

  • Strong Acidic Nature: HBr is classified as a strong acid, which indicates its tendency to completely dissociate in aqueous solutions.
  • Water Solubility: It is extremely soluble in water, forming a solution referred to as hydrobromic acid. This is due to the polar nature of the H–Br bond, which interacts favorably with water molecules.
  • Concentration Variability: The solubility of hydrogen bromide can vary depending on temperature and pressure, with higher temperatures generally leading to increased solubility.
  • Miscibility: HBr is also miscible in alcohols and ethers, showing its versatility in various solvents.

Overall, the remarkable solubility of hydrogen bromide in water and numerous organic solvents highlights its importance in both industrial applications and laboratory settings. As a practical note, proper handling and storage of HBr solutions are crucial due to their corrosive nature.

Interesting facts

Interesting Facts About Hydrogen Bromide

Hydrogen bromide (HBr) is a fascinating compound with several significant applications and unique properties. Here are some intriguing aspects to consider:

  • Strong Acid: Hydrogen bromide is known to be a strong acid when dissolved in water, forming hydrobromic acid. This makes it a vital component in various acid-base reactions.
  • Synthesis: HBr can be produced through the reaction of hydrogen gas with bromine, showcasing its straightforward synthesis method. This makes it easily accessible for laboratory use.
  • Use in Organic Chemistry: It plays a crucial role in organic synthesis, particularly in the bromination of hydrocarbons. This process can introduce bromine atoms into molecules, leading to diverse chemical reactivities.
  • Ionization: In aqueous solution, hydrogen bromide ionizes completely, providing a strong concentration of bromide ions, which are essential in many biochemical processes.
  • Safety Precautions: While hydrogen bromide is valuable, it is also hazardous! It is corrosive and can cause severe damage to tissues upon contact. Safety measures are essential when handling this compound.
  • Detection: HBr is often used in gas chromatography for the detection of certain compounds, allowing chemists to analyze complex mixtures effectively.

In summary, hydrogen bromide is not only an interesting compound in its own right but also an essential part of many chemical processes. It exemplifies the delicate balance between utility and safety in chemical practices, reminding scientists of the importance of careful handling and respect for chemical substances.

Synonyms
Hydrogen bromide
HYDROBROMIC ACID
10035-10-6
hydrobromide
bromane
Bromwasserstoff
Broomwaterstof
Bromowodor
Acido bromidrico
Acide bromhydrique
Hydrogen bromide (HBr)
Anhydrous hydrobromic acid
Hydrogen bromide, anhydrous
Acido bromhidrico
Hydrogen monobromide
HSDB 570
CHEBI:47266
UNII-3IY7CNP8XJ
3IY7CNP8XJ
Bromure d'hydrogene anhydre
Bromuro de hidrogeno anhidro
EINECS 233-113-0
bromure d'hydrogene
BROMOHYDRIC ACID
HYDROGENE BROMIDE
MFCD00011323
HYDROBROMIC ACID 10%
DTXSID0029713
EC 233-113-0
NSC-606640
HBR
Bromowodor [Polish]
hydrogenbromide
Broomwaterstof [Dutch]
Hydrogenbromid
Bromwasserstoff [German]
Hydrobromic acid, ACS reagent, 48%
Acido bromidrico [Italian]
Acide bromhydrique [French]
Acido bromhidrico [Spanish]
Hydrobromic acid,48%
Hydrobromic Acid (47-48% in aqueous solution)
Anhydrous hydrogen bromide
Bromure d'hydrogene anhydre [French]
UN1048
UN1788
Bromuro de hidrogeno anhidro [Spanish]
bromidohydrogen
bromohydride
bromum
hydrobromid
organobromide
organobromides
hydro bromide
hydrobromic aicd
hydrogen-bromide
hyrdogen bromide
hydrobrornic acid
Bromohydric Acid; Hydrogen Bromide; Hydrogen Monobromide; NSC 606640
hydro-bromic acid
Acid, Hydrobromic
Bromide, Hydrogen
bromoorganic compound
Hydrobromicum Acidum
organobromide compound
organobromine compound
organobromide compounds
organobromine compounds
Aqueous hydrogen bromide
an organobromine molecule
Hydrobromic acid, 48%
(HBr)
3,4-bis-(benzyloxy)-
Hydrobromic acid 62% by weight or more HBr
35Br
hydrogen bromide 33% w/w
Hydrogen bromide, anhydrous-
HYDROBROMIC ACID [MI]
HYDROGEN BROMIDE [MI]
DTXCID809713
Hydrogen bromide in acetic acid
HYDROBROMIC ACID [HSDB]
CHEMBL1231461
CHEBI:22927
CHEBI:37141
HYDROGEN BROMIDE (H2BR2)
DTXSID201014232
Hydrobromic acid - 48% in water
HYDROBROMIC ACID, ANHYDROUS
Hydrogen Bromide - Ethanol Reagent
Hydrogen Bromide - Methanol Reagent
BDBM50499189
AKOS015833690
Hydrobromic acid, reagent grade, 48%
FH47126
UN 1048
UN 1788
Hydrogen Bromide 33% wt in Acetic Acid
BP-21021
Hydrobromic acid,48%, ACS reagent grade
HYDROGEN BROMIDE (HYDROBROMIC ACID)
O-(isopropulamino)acetophenone hydrobromide
Hydrogen bromide, ReagentPlus(R), >=99%
H0182
H0959
H1220
NS00113695
Q2447
X0043
A800104
Hydrobromic acid, SAJ first grade, 45.0-49.0%
Hydrobromic acid, 48 wt. % in H2O, >=99.99%
Hydrobromic acid, JIS special grade, 47.0-49.0%
Hydrobromic acid, with more than 49% hydrobromic acid
Hydrogen bromide, anhydrous [UN1048] [Poison gas]
AQUEOUS HYDROGEN BROMIDE (I.E., HYDROBROMIC ACID)
Hydrobromic acid, p.a., ACS reagent, reag. ISO, 47.0%
Hydrobromic acid, with not more than 49% hydrobromic acid
Hydrobromic acid, with more than 49% hydrobromic acid [UN1788] [Corrosive]
Hydrobromic acid, with not more than 49% hydrobromic acid [UN1788] [Corrosive]
233-113-0