Physical & Chemical Properties
| Property | Value | Unit |
|---|---|---|
| Molar mass | 80.91 g/mol | - |
| Appearance | Colorless to pale-yellow fuming liquid (aqueous) | - |
| Boiling point | ~122-124 °C (48% azeotrope) | °C |
| Density | ~1.49 g/cm³ (48%) | g/cm³ |
| Acid strength | Strong (pKa ≈ -9) | - |
| Odor | Sharp, acrid, irritating | - |
Overview
Hydrobromic acid (HBr), CAS 10035-10-6, is an aqueous solution of hydrogen bromide and one of the strongest common mineral acids — stronger than hydrochloric acid. It is typically supplied as a ~48% w/w solution: a colorless to pale-yellow, fuming, highly corrosive liquid used to manufacture bromide salts and organobromine compounds.
Shipping & Availability
Parcel Shipping
UPS Ground supports pints, quarts, and most 1-gallon packages nationwide.
LTL Freight
5-gallon pails, drums, and totes move via LTL carriers such as ABF Freight, SEFL, Saia, and XPO.
Full Truckload
FTL available for palletized bulk orders. Competitive freight rates.
Local Pickup
Will-call pickup available at our Taylor, TX warehouse for Texas customers.
SDS, COA, and TDS available for every product • Most orders ship in 1-2 business days from Taylor, TX
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Frequently Asked Questions
What is hydrobromic acid (HBr)?
Hydrobromic acid is an aqueous solution of hydrogen bromide (HBr), CAS 10035-10-6. It is one of the strongest common mineral acids — stronger than hydrochloric acid — and is usually supplied as a ~48% w/w solution, a colorless to pale-yellow fuming liquid.
What is hydrobromic acid used for?
It is used mainly to make inorganic bromides (sodium, potassium, calcium, and zinc bromide), to produce alkyl and aryl bromides for organic synthesis, as a reagent and catalyst, and in pharmaceutical bromide-salt manufacturing.
Is hydrobromic acid stronger than hydrochloric acid?
Yes. HBr is a stronger acid than HCl because the H–Br bond is weaker than the H–Cl bond, so it dissociates more completely in water (pKa ≈ -9 for HBr versus about -7 for HCl).
How is hydrobromic acid handled safely?
HBr is highly corrosive and its vapors are irritating and toxic. Use acid-resistant gloves and eye protection under local exhaust ventilation or a fume hood, and store it away from bases and oxidizers. In transport it is UN1788, Hydrobromic acid, Class 8 (corrosive). Always follow the product SDS.
Does Alliance Chemical sell hydrobromic acid?
Alliance Chemical does not currently stock hydrobromic acid. For acid supply we carry hydrochloric, sulfuric, nitric, and phosphoric acids in grades from technical to ACS reagent, in sizes from 1 quart to 275/330-gallon totes, with SDS and COA included. Contact our team at 512-365-6838 for sourcing questions.