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Potassium bromide

Potassium bromide Structure
Potassium bromide structure
CAS No.
7758-02-3
Chemical Name:
Potassium bromide
Synonyms
KBr;BROMINE WATER;BROMINE TS;Kaliumbromid;Battery Grade;BROMINE LIQUID;Potassium bromide (KBr);ACS， 99% min;KALII BROMIDUM;BROMIDE BROMATE
CBNumber:
CB2854302
Molecular Formula:
BrK
Molecular Weight:
119
MDL Number:
MFCD00011358
MOL File:
7758-02-3.mol
MSDS File:
SDS
Last updated:2024-03-06 18:00:57
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Potassium bromide Properties

Melting point 734 °C (lit.)
Boiling point 1435 °C/1 atm (lit.)
Density 3.119 g/mL at 25 °C(lit.)
vapor density 7.14 (vs air)
vapor pressure 175 mm Hg ( 20 °C)
refractive index 1.559
Flash point 1435°C
storage temp. Store at +5°C to +30°C.
solubility H2O: 1 M at 20 °C, clear, colorless
form random crystals
Specific Gravity 2.75
color White
PH 5.0-8.8 (25℃, 50mg/mL in H2O)
Water Solubility 650 g/L (20 ºC)
Sensitive Hygroscopic
λmax λ: 260 nm Amax: 0.01
λ: 280 nm Amax: 0.01
Merck 14,7618
Dielectric constant 4.8700000000000001
Stability Stable. Incompatible with strong oxidizing agents, strong acids, bromine trifluoride and bromine trichloride.
InChIKey IOLCXVTUBQKXJR-UHFFFAOYSA-M
LogP 1 at 25℃
Substances Added to Food (formerly EAFUS) POTASSIUM BROMIDE
FDA 21 CFR 173.315
CAS DataBase Reference 7758-02-3(CAS DataBase Reference)
EWG's Food Scores 1
FDA UNII OSD78555ZM
NIST Chemistry Reference Potassium bromide(7758-02-3)
EPA Substance Registry System Potassium bromide (7758-02-3)

SAFETY

Risk and Safety Statements

Symbol(GHS)  GHS hazard pictograms
GHS07
Signal word  Warning
Hazard statements  H319
Precautionary statements  P280-P305+P351+P338-P337+P313
Hazard Codes  Xi
Risk Statements  36/37/38-36
Safety Statements  26-45-61-7/9-39-36
RIDADR  UN 1744 8/PG 1
WGK Germany  2
RTECS  TS7650000
F  3-10
TSCA  Yes
HS Code  28275100
Toxicity LD50 orally in Rabbit: > 2000 mg/kg
NFPA 704
0
1 0

Potassium bromide price More Price(119)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich P9881 Potassium bromide ReagentPlus?, ≥99.0% 7758-02-3 500G $92.2 2024-03-01 Buy
Sigma-Aldrich P9881 Potassium bromide ReagentPlus?, ≥99.0% 7758-02-3 1KG $136 2024-03-01 Buy
Sigma-Aldrich 221864 Potassium bromide FT-IR grade, ≥99% trace metals basis 7758-02-3 25g $170 2024-03-01 Buy
Sigma-Aldrich 221864 Potassium bromide FT-IR grade, ≥99% trace metals basis 7758-02-3 100g $398 2024-03-01 Buy
Sigma-Aldrich 1.04907 Potassium bromide for IR spectroscopy Uvasol? 7758-02-3 100g $464 2024-03-01 Buy
Product number Packaging Price Buy
P9881 500G $92.2 Buy
P9881 1KG $136 Buy
221864 25g $170 Buy
221864 100g $398 Buy
1.04907 100g $464 Buy

Potassium bromide Chemical Properties,Uses,Production

Chemical Properties

Potassium bromide is a white or colourless crystalline solid with a pungent strong bitter and saline taste, slightly hygroscopic and soluble in water and very slightly soluble in ethanol and ether; cubic; r.d. 2.75; m.p. 734°C; b.p. 1435°C. Potassium bromide maybe prepared by the action of bromine on hot potassium hydroxide solutionor by the action of iron(III) bromideor hydrogen bromide on potassium carbonate solution. It is used widely in the photographic industry and is also used as a sedative. Because of itsrange of transparency to infrared radiation,KBr is used both as a matrix for solid samples and as a prism materialin infrared spectroscopy.

Uses

Potassium bromide was used as a secondary halide in combination with an iodide in the paper negative processes, the albumen on glass process, and the wet collodion processes. When silver bromide gelatin emulsion was invented, potassium bromide was the primary halide. It was also used in combination with either bichloride of mercury, copper sulfate, or potassium ferricyanide in photographic bleaches and as a restrainer in alkaline developers used for gelatin plates and developing-out papers.

Application

Potassium bromide is widely used in optics because KBr has a low refractive index and a wide spectral range into the infrared with nearly no absorption. As a result, KBr is widely used as infrared optical windows, as infrared beamsplitters, and as substrates for interferometers. Commonly KBr is used in transmission infrared spectroscopy as a media for powder samples. The KBr and powder are ground together and pressed, using a die, into a thin disc under vacuum. The disc suspends the sample without contributing to the transmitted signal. Potassium bromide has also been used in synthesis, commonly as a source of bromide ions. For example, double displacement of KBr and bismuth nitrate yielded nanosheets of bismuth oxybromide. Solutions of KBr have also been found to be useful shape-control agents or crystal-habit modifiers in formation of metal nanocrystals, including palladium nanorods and bimetallic platinum-paladium nanocrystals. KBr is a common source of bromide ions used as nucleophiles in organic chemistry.

Preparation

Potassium bromide was produced by the action of bromine on hot potassium hydroxide solution or Reacting elemental bromine with potassium hydroxide or potassium iodide will produce the potassium bromide salt:
KOH + Br2 → KBr + HOBr
KI + Br2 → KBr + I2
The reaction of bromine with potassium carbonate and urea is the basis of the process. 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.

Definition

ChEBI: Potassium bromide is a metal bromide salt with a K(+) counterion. It is used in the manufacture of photographic film, developer, film thickener, toner and color photo bleach.

General Description

Potassium bromide is a white salt that crystallizes in the cubic rock salt structure, like sodium chloride. KBr is hygroscopic, deliquescent, highly soluble in water, and soluble in some polar organic solvents like glycerol, ethylene glycol, liquid ammonia, and hot ethanol, but insoluble in acetone. Aqueous solutions are neutral (pH about 7). When dissolved, KBr dissociates completely into its ions, making it a useful source of bromine ions in double displacement reactions or salt metathesis reactions. For example, this property was used in the production photographic films of silver bromide: KBr was reacted with silver nitrate to precipitate silver bromide, a salt that decomposes on exposure to light.

Air & Water Reactions

Water soluble.

Reactivity Profile

Potassium bromide is not in generally strongly reactive. A weak reducing agent, incompatible with oxidizing agents. Also incompatible with salts of mercury and silver. Violent reactions occur with bromine trifluoride. May react with nitrous ether spirit, many alkaloidal salts and starch. May also react with acids . Reacts with concentrated sulfuric acid to generate fumes of hydrogen bromide.

Hazard

Toxic by ingestion and inhalation

Fire Hazard

Flash point data for Potassium bromide are not available; however, Potassium bromide is probably nonflammable.

Flammability and Explosibility

Non flammable

Biochem/physiol Actions

Potassium bromide (KBr) is used as an anticonvulsant and sedative. KBr is used for optical windows and prisms. KBr is transparent in the wide wavelength range from near ultraviolet to long wave infrared. It is employed in the sample preparation for infrared transmission spectra.

Safety Profile

Moderately toxic by ingestion and intraperitoneal routes. Large doses can cause central nervous system depression. Prolonged inhalation may cause skin eruptions. Mutation data reported. Violent reaction with BrF3. When heated to decomposition it emits toxic fumes of K2O and Br-. See also BROMIDES.

Veterinary Drugs and Treatments

Bromides are used both as primary therapy and as adjunctive therapy to control seizures in dogs that are not adequately controlled by phenobarbital (or primidone) alone (when steady state trough phenobarbital levels are >30 mcg/mL for at least one month). While historically bromides were only recommended for use alone in patients suffering from phenobarbital (or primidone) hepatotoxicity, they are more frequently used as a drug of first choice.
Although not frequently used, bromides are also considered suitable by some for use in cats with chronic seizure disorders, but cats may be more susceptible to the drug’s adverse effects.

Purification Methods

Crystallise the bromide from distilled water (1mL/g) between 100o and 0o. Wash it with 95% EtOH, followed by Et2O. Dry it in air, then heat it at 115o for 1hour, pulverize it, then heat it in a vacuum oven at 130o for 4hours. It has also been crystallised from aqueous30% EtOH, or EtOH, and dried over P2O5 under vacuum before heating in an oven.

Potassium bromide Preparation Products And Raw materials

Raw materials

Ampicillin Potassium hydroxide Potassium carbonate 2,3-DICHLORO-5,8-DIHYDROXY-1,4-NAPHTHOQUINONE Urea
Hydrogen bromide Government regulation

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Preparation Products

5-Bromo-2-oxindole 4-BROMOMETHYLTETRAHYDROPYRAN Hydroxyacetone 1 10-PHENANTHROLINE-5 6-DIONE 97 MORPHOLINE-3,4-DICARBOXYLIC ACID 4-TERT-BUTYL ESTER
Cyclopropanecarboxaldehyde DL-Threonine Potassium bromate 3-Bromo-7-(trifluoromethyl)imidazo[1,2-a]pyrimidine Beclobrate
Cuprous bromide 1,1-diethoxyethylene Tazobactam acid MERCURIC BROMIDE 3-Bromobenzophenone
mercurous bromide 4-Bromobenzyl bromide (S)-4-BOC-MORPHOLINE-3-CARBOXYLIC ACID trans,trans-Muconic acid 4-Phenoxy-2,6-Diisopropyl Aniline

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Potassium bromide Suppliers

Global( 614)Suppliers
Supplier Tel Email Country ProdList Advantage
Hebei Zhanyao Biotechnology Co. Ltd
15369953316 +8615369953316 admin@zhanyaobio.com China 2136 58
Hebei Mojin Biotechnology Co., Ltd 		+8613288715578 sales@hbmojin.com China 12452 58
Hebei Yanxi Chemical Co., Ltd. 		+8617531190177 peter@yan-xi.com China 5993 58
Hebei Jingbo New Material Technology Co., Ltd 		+8619931165850 hbjbtech@163.com China 1000 58
Wuhan Ruichi Technology Co., Ltd 		+8613545065237 admin@whrchem.com China 164 58
Shandong Juchuang Chemical Co., LTD 		+86-18885615001 +86-18885615001 admin@juchuangchem.com China 387 58
Shanghai Daken Advanced Materials Co.,Ltd 		+86-371-66670886 info@dakenam.com China 15371 58
Henan Tianfu Chemical Co.,Ltd. 		+86-0371-55170693 +86-19937530512 info@tianfuchem.com China 21695 55
Hangzhou FandaChem Co.,Ltd. 		008657128800458; +8615858145714 fandachem@gmail.com China 9353 55
Shanxi Naipu Import and Export Co.,Ltd 		+86-13734021967 +8613734021967 kaia@neputrading.com China 1011 58
Supplier Advantage
Hebei Zhanyao Biotechnology Co. Ltd
58
Hebei Mojin Biotechnology Co., Ltd 		58
Hebei Yanxi Chemical Co., Ltd. 		58
Hebei Jingbo New Material Technology Co., Ltd 		58
Wuhan Ruichi Technology Co., Ltd 		58
Shandong Juchuang Chemical Co., LTD 		58
Shanghai Daken Advanced Materials Co.,Ltd 		58
Henan Tianfu Chemical Co.,Ltd. 		55
Hangzhou FandaChem Co.,Ltd. 		55
Shanxi Naipu Import and Export Co.,Ltd 		58

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View Lastest Price from Potassium bromide manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
Potassium Bromide (KBr) pictures 2024-03-11 Potassium Bromide (KBr)
7758-02-3
 US $3500.00-2800.00 / ton 500ton 99.9 200tons Shandong Juchuang Chemical Co., LTD
Potassium bromide pictures 2024-01-08 Potassium bromide
7758-02-3
 US $9.00 / KG 1KG 99% 50000tons Wuhan Boyuan Import & Export Co., LTD
Potassium bromide pictures 2024-01-08 Potassium bromide
7758-02-3
 US $9.00 / KG 1KG 99% 50000tons Wuhan Boyuan Import & Export Co., LTD

7758-02-3(Potassium bromide)Related Search:

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Hydrogen bromide Cuprous bromide Ethidium bromide

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