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Chlorides and other halides

Potassium bromide

Also known as Bromide salt of potassium, Potassium bromide (KBr), Bromure de potassium

CAS 7758-02-3Formula BrKMolar mass 119.00 g/molEC 231-830-3
GHS signal word: Warning. Pictograms: Harmful or irritant 156 suppliers listed Drug substance
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Potassium bromide chemical structure, BrK, CAS 7758-02-3
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Colorless crystals or white granules or powder
Melting point
730 °C
Boiling point
1,435 °C
Density
2.74 g/cm³ at 25 °C
Solubility
In water, 67.8 g/100 g at 25 °C
HS code
282751
Category
Chlorides and other halides
Illustrative photo, granules discharging from a jumbo bag in a chemical plant
Typical packagingIllustrative packaging image, not the actual product

What is Potassium bromide?

Plain description, key identifiers and synonyms

Potassium bromide is a metal bromide salt with a K(+) counterion.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
potassium bromide
CAS number
7758-02-3 CAS number cross-checked
EC number
231-830-3
Molecular formula
BrK
UNII
OSD78555ZM
MDL number
MFCD00011358
INCI name
POTASSIUM BROMIDE
InChIKey
IOLCXVTUBQKXJR-UHFFFAOYSA-M
InChI
InChI=1S/BrH.K/h1H;/q;+1/p-1
SMILES (canonical and isomeric)
[K+].[Br-]

Synonyms

  • Bromide salt of potassium
  • Potassium bromide (KBr)
  • Bromure de potassium
  • Kaliumbromid
  • Kalii bromidum
  • Kali bromatum
  • Tripotassium tribromide
  • bromopotassium
  • Pot brom
  • K-BroVet
  • KBroVet-CA1
  • KALI BROM
  • K-BroVet 250
  • KBroVet-CA1 250
  • KBroVet-CA1 500
  • Bestmade Natural Products Potassium Bromide (Kali Brom)
  • potassium, bromide
  • KBr
  • Potassium bromide, 99%
  • hydrobromic acid potassium salt
  • Potassiumbromide
  • Potassium bromide, ultra dry
  • Bromide anion standard solution
  • Potassium bromide (K3Br3)
  • Psorizide forte
Show all 31 synonyms
  • Psorizide ultra
  • Potassium bromide ACS reagent
  • Potassium bromide, acs
  • Potassium bromide, FTIR Grade
  • Potassium bromide, spectroscopy
  • Potassium bromide (JP18/USP)

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Appearance
Colorless crystals or white granules or powderexp.
Odour
Odorlessexp.
Taste
Pungent, strong, bitter, salineexp.
Melting point
730 °Cexp.
Boiling point
1,435 °Cexp.
Density
2.74 g/cm³ at 25 °Cexp.
Solubility
In water, 67.8 g/100 g at 25 °Cexp.
Vapour pressure
VP: 1 mm Hg at 795 °Cexp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
119.00 g/molcalc.
Exact mass
117.882 Dacalc.
LogP (octanol/water)
-5.99calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
0calc.
Heavy atoms
2calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.
Components
2calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
Precautionary statements (16)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Potassium bromide suppliers

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All 156 suppliers
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Where suppliers are based

156 suppliers in 21 countries

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Potassium bromide price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Veterinary medication:.

Potassium bromide may be utilized for the production of photographic-grade silver bromide. It also finds use in process engraving, lithography ... Other uses for potassium bromide are in clear completion fluids in the petroleum industry, as a pharmaceutical intermediate, and in the manufacture of fibers.

Use classes: Animal Drugs.

Cosmetic ingredient, INCI name POTASSIUM BROMIDE(viscosity controlling)

Functional uses

  • Cleaning agent
  • Viscosity modifier

Cosmetic functions

  • Viscosity controlling

How it is made

Solutions of iron bromide and potassium carbonate are mixed and heated, the solution filtered and concentrated, and the bromide crystallized out.

Treatment of iron turnings with a 35% aqueous solution of bromine. Ferrosoferric bromide forms and can be crystallized. The iron bromide is heated to a boil with a slight excess of 15 wt% potassium carbonate solution. This forms a precipitate (potassium bromide) that is readily filtered with no further purification necessary.

The reaction of bromine with potassium carbonate and urea is the basis of the process.

Read more

The first step of the process involves the addition of K2SO4 to the potassium carbonate solution, followed by heating to 80 °C. After the lead-containing precipitate is removed by filtration, the bromine and urea are added, and the temperature and pH are adjusted to 30 °C and 6.0-6.5, respectively. Potassium bromide is recovered by recrystallization after reduction of volume of the reacting solution by evaporation. The sulfate can be removed from the solution by addition of BaBr2.

Regulatory status

Inventories, regulations and trade controls that list this substance

Health and food

  • EU cosmetic ingredient inventory
  • Active ingredient in FDA approved drug labels

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Potassium bromide is traded under.

HS 2827.51Indicative HS code

Bromides of sodium or of potassium

World exports in 2024
$144M
−22.6% vs 2023, imports $165M
2019 to 2024
Top exporters
  1. Israel30.0%
  2. China23.2%
  3. United States16.8%
Top importers
  1. China17.7%
  2. United States14.7%
  3. Guyana * partner reported13.5%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Potassium bromide is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Potassium bromide, based on the data on this page

What is Potassium bromide?

Potassium bromide is a metal bromide salt with a K(+) counterion.

What is the CAS number of Potassium bromide?

The CAS registry number of Potassium bromide is 7758-02-3.

What is the molecular formula and weight of Potassium bromide?

The molecular formula of Potassium bromide is BrK and its molar mass is 119.00 g/mol.

What is Potassium bromide used for?

Veterinary medication:. Potassium bromide may be utilized for the production of photographic-grade silver bromide. It also finds use in process engraving, lithography ...

Is Potassium bromide hazardous?

Potassium bromide carries the GHS signal word "Warning". Main hazards: causes skin irritation, causes serious eye irritation, may cause respiratory irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Potassium bromide?

Potassium bromide is usually classified under HS code 282751 (Bromides of sodium or of potassium). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Potassium bromide?

CompoundList lists 156 suppliers of Potassium bromide in India, China, United States, United Kingdom and 17 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Potassium bromide in India?

50 suppliers in India list Potassium bromide on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Potassium bromide?

Suppliers quote Potassium bromide on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Potassium bromide

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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