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Potassium bromide

Description Uses Spectrum purity Preparation Toxicity
Potassium bromide
Potassium bromide structure
CAS No.
7758-02-3
Chemical Name:
Potassium bromide
Synonyms
KBr;BROMINE TS;Kaliumbromid;Battery Grade;BROMINE WATER;BROMINE LIQUID;KALII BROMIDUM;BROMIDE BROMATE;POTASSIUM BROMIDE;bromuredepotassium
CBNumber:
CB2854302
Molecular Formula:
BrK
Formula Weight:
119
MOL File:
7758-02-3.mol

Potassium bromide Properties

Melting point:
734 °C(lit.)
Boiling point:
58.8 °C(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. 
2-8°C
solubility 
H2O: 1 M at 20 °C, clear, colorless
form 
random crystals
color 
White
Specific Gravity
2.75
PH
5.0-8.8 (25℃, 50mg/mL in H2O)
Water Solubility 
650 g/L (20 ºC)
λmax
λ: 260 nm Amax: 0.01
λ: 280 nm Amax: 0.01
Sensitive 
Hygroscopic
Merck 
14,7618
Stability:
Stable. Incompatible with strong oxidizing agents, strong acids, bromine trifluoride and bromine trichloride.
InChIKey
IOLCXVTUBQKXJR-UHFFFAOYSA-M
FDA 21 CFR
173.315
CAS DataBase Reference
7758-02-3(CAS DataBase Reference)
Substances Added to Food (formerly EAFUS)
POTASSIUM BROMIDE
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) 
GHS07
Signal word  Warning
Hazard statements  H303-H315-H335-H319
Precautionary statements  P261-P280a-P304+P340-P405-P501a-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
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(76)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 221864 Potassium bromide FT-IR grade, ≥99% trace metals basis 7758-02-3 25g $78 2019-12-02 Buy
Sigma-Aldrich 221864 Potassium bromide FT-IR grade, ≥99% trace metals basis 7758-02-3 100g $220 2019-12-02 Buy
TCI Chemical P1747 Potassium Bromide >99.0%(T) 7758-02-3 300g $20 2020-06-24 Buy
Alfa Aesar 010837 Potassium bromide, Puratronic?, 99.999% (metals basis) 7758-02-3 50g $19.1 2020-06-24 Buy
Alfa Aesar 010837 Potassium bromide, Puratronic?, 99.999% (metals basis) 7758-02-3 10g $84.8 2020-06-24 Buy

Potassium bromide Chemical Properties,Uses,Production

Description

Potassium bromide can be used as analytical reagents and developers, but also for the pharmaceutical industry.
It can be used as the emulsion reagents for the filmstrip and photo film; used for formulating developer, used as a sedative in medical treatment.
In photographic materials, Potassium bromide is used in the manufacture of photographic film, developer, film thickener, toner and color photo bleach. In medication, it is used as nerve tranquilizers (tribromide). In addition, it is also used for chemical analysis reagents, the transmission of the spectra and infrared ray, for making special soap as well as being used in sculpture, lithography and so on.
It can be used for the preforming in the infrared test.

Uses

Industry
Application
Role/benefit
Photography
Preparation of developing agent
Restrainer/ improves differentiation between exposed and unexposed crystals of silver halide, and thus reduces fog
Print developing solution
Alkaline accelerator/increases the printing density of thin negatives
Optics
Infrared spectroscopy
Sample carrier/has no significant optical absorption lines in its high transmission region
Human medicine
Treatment of epileptic and seizure disorders
Effective component/anti-convulsant and sedative activity
Veterinary
Treatment of seizures in dogs, cats,etc.
Effective component/anti-convulsant and sedative activity
Chemical analysis
Titration determination of copper and silver
Titration agent
Polarographic analysis of indium, cadmium and arsenic
Analytical agent
Removal of peripheral membrane proteins
 

Spectrum purity

For IR detection; used for infrared sample preparation;
Solubility (g/100ml)
0 ° C to 53.6 g; 10 ° C to 59.5 g; 20 ° C to 65.3 g; 30 ° C to 70.7 g; 40 ° C to 75.4 g
60 ° C to 85.5 g; 80 ° C to 94.9 g; 90 ° C to 99.2 g; 100 ° C to 104 g.

Preparation

The bromide is first reacted with scrap iron to obtain the Fe3Br8 • 16H2O, followed by reaction with the boiling potassium carbonate solution. Fe3Br8 • 16H2O + K2CO3-boiling heat-> 8KBr + Fe3O4 + 4CO2 + 16H2O, the Fe3O4 is filtered, followed by concentration to obtain potassium bromide.
Urea reduction method: send the caustic potassium solution dissolved with urea caustic potassium solution sent to the reactor. Slowly add bromine at 80 ° C for reaction. The reaction is completed when the Ph value is 6-7. The reaction solution is added to the storage tank, subjecting to activated carbon decolorization. When the solution becomes clean, apply filtering, evaporation, crystallization, centrifugal separation and drying, that is the finished product of potassium bromide. Its reaction equation is:
3Br2 + 6KOH + CO (NH2) 2 → 6KBr + 5H2O + CO2 ↑ + N2 ↑

Toxicity

Avoid ingestion or inhalation; avoid eye and skin contact. Upon ingestion, head dizziness, nausea may occur. Immediately seek medical treatment; Upon inhalation, vomiting will happen, the patient should be immediately moved to place with fresh air and sent for medical treatment; if splashed into eyes, immediately rinse with a lot of fresh water for 2 0min; skin, upon being contact with potassium bromide, should also be subject to rinsing with plenty of water.

Chemical Properties

White, crystalline granules or pow- der; pungent, strong, bitter, saline taste; somewhat hygroscopic.Solu- ble in water and glycerol; slightly soluble in alcohol and ether.

Uses

This white crystal was made by the action of bromine on hot potassium hydroxide solution. It is soluble in water but much less so in alcohol. 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.

Uses

manufacture of photographic papers and plates; process engraving.

Uses

Potassium bromide (KBr) is used in photography and as a medical sedative.

Definition

ChEBI: A metal bromide salt with a K(+) counterion.

Definition

potassium bromide: A white orcolourless crystalline solid, KBr,slightly hygroscopic and soluble inwater and very slightly soluble inethanol; cubic; r.d. 2.75; m.p. 734°C;b.p. 1435°C. Potassium bromide maybe prepared by the action of bromineon hot potassium hydroxide solutionor by the action of iron(III) bromideor hydrogen bromide on potassiumcarbonate solution. It is used widelyin the photographic industry and isalso used as a sedative. Because of itsrange of transparency to infrared radiation,KBr is used both as a matrixfor solid samples and as a prism materialin infrared spectroscopy.

General Description

Odorless colorless crystals or white crystalline powder or white granular solid with a pungent bitter saline taste. Aqueous solutions are neutral (pH about 7).

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.

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

Preparation Products


Potassium bromide Suppliers

Global( 352)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Henan DaKen Chemical CO.,LTD.
+86-371-55531817
info@dakenchem.com CHINA 21837 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693
0371-55170693 info@tianfuchem.com CHINA 22625 55
Hangzhou FandaChem Co.,Ltd.
0086 158 5814 5714 (Mobile
+86-571-56059825 fandachem@gmail.com CHINA 3268 55
Hebei Chisure Biotechnology Co., Ltd.
+8613292890173
0311 66567340 luna@speedgainpharma.com CHINA 1009 58
Shanghai Zheyan Biotech Co., Ltd.
18017610038
zheyansh@163.com CHINA 3623 58
Chemwill Asia Co.,Ltd.
86-21-51086038
86-21-51861608 chemwill_asia@126.com;sales@chemwill.com;chemwill@hotmail.com;chemwill@gmail.com CHINA 23977 58
Hubei Jusheng Technology Co.,Ltd.
86-18871470254
027-59599243 linda@hubeijusheng.com CHINA 28231 58
Haihang Industry Co.,Ltd
86-531-88032799
+86 531 8582 1093 export@haihangchem.com CHINA 10157 58
Xiamen AmoyChem Co., Ltd
+86 592-605 1114
sales@amoychem.com CHINA 6371 58
Henan Xiangtong Chemical Co., Ltd.
86-371-61312303
86-371-86017988 xtchem2019@gmail.com CHINA 288 58

View Lastest Price from Potassium bromide manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2019-11-01 Potassium Bromide
7758-02-3
US $1.00 / KG 1KG 99% 10t Henan Xiangtong Chemical Co., Ltd.
2020-07-20 Potassium bromide
7758-02-3
US $30.45 / KG 1KG Above 99% 5000kg/month Shijiazhuang Suking Biotechnology Co .,Ltd. Co., Ltd.
2020-01-10 Potassium bromide
7758-02-3
US $1.00 / KG 1KG 98%-99.9% 200kg Career Henan Chemical Co

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