Potassium Bromide

Base Information

• Chemical Name: Potassium Bromide
• CAS No.: 7758-02-3
• Deprecated CAS: 59217-61-7
• Molecular Formula: BrK
• Molecular Weight: 119.002
• Hs Code.: 2827510000
• European Community (EC) Number: 231-830-3
• NSC Number: 77367
• UNII: OSD78555ZM
• DSSTox Substance ID: DTXSID5025946
• Nikkaji Number: J43.930D
• Wikipedia: Potassium bromide
• Wikidata: Q2546
• NCI Thesaurus Code: C76725
• RXCUI: 34299
• ChEMBL ID: CHEMBL1644030
• Mol file: 7758-02-3.mol

Synonyms:KBr;potassium bromide

Chemical Property of Potassium Bromide

Chemical Property:

• Appearance/Colour: odourless white or colourless crystalline solid
• Vapor Pressure: 175 mm Hg ( 20 °C)
• Melting Point: 734 °C(lit.)
• Refractive Index: 1.559
• Boiling Point: 58.8 °C(lit.)
• Flash Point: 1435 °C
• PSA: 0.00000
• Density: 3.119 g/mL at 25 °C(lit.)
• LogP: -2.99600
• Storage Temp.: Store at +5°C to +30°C.
• Solubility.: H2O: 1?M at?20?°C, clear, colorless
• Water Solubility.: 650 g/L (20℃)
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 1
• Rotatable Bond Count: 0
• Exact Mass: 117.88204
• Heavy Atom Count: 2
• Complexity: 2

Purity/Quality:

99% ^*data from raw suppliers

Potassium bromide 99+% ^*data from reagent suppliers

Safty Information:

• Pictogram(s): Xi
• Hazard Codes: Xi:Irritant
• Statements: R36:
• Safety Statements: S26:; S39:

MSDS Files:

SDS file from LookChem

Total 1 MSDS from other Authors

Useful:

• Chemical Classes: Other Classes -> Halogens, Inorganic Compounds
• Canonical SMILES: [K+].[Br-]
• 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.

Technology Process of Potassium Bromide

There total 135 articles about Potassium Bromide which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 55.0%

silyl bromide (14791-57-2) + potassium phosphanide → trisilylphosphine (15110-33-5) + phosphan (7803-51-2) + potassium bromide (7558-02-3,7758-02-3)

Guidance literature:

In Dimethyl ether; reaction starts at -120°C and finishes at -40°C;; distillation in high vacuum;;

Reference yield:

bromine (7726-95-6) → bromocyane (506-68-3) + hydrogen bromide (10035-10-6,12258-64-9) + potassium bromide (7558-02-3,7758-02-3)

Guidance literature:

With water; potassium thioacyanate; byproducts: H2SO4; with excess Br2;

Reference yield:

potassium thioacyanate (333-20-0) → bromocyane (506-68-3) + sulfuric acid (7664-93-9) + hydrogen bromide (10035-10-6,12258-64-9) + potassium bromide (7558-02-3,7758-02-3)

Guidance literature:

With water; bromine; In water; with excess of Br2;

upstream raw materials:

bromine

potassium carbonate

barium sulfide

hydrogen bromide

Downstream raw materials:

caesium bromide

potassium fluoride

iron(II) bromide

[(η5-cyclopentadienyl)Ru(PPh3)2Br]

Refernces

• 1、 Ogawa, Makoto,Saothayanun, Taya Ko,Sirinakorn, Thipwipa Tip. "Ion Exchange of Layered Alkali Titanates (Na2Ti3O7, K2Ti4O9, and Cs2Ti5O11) with Alkali Halides by the Solid-State Reactions at Room Temperature". . p. 4024 - 4029. Retrieved 2020/04/08.
• 2、 Zhou, Juan,Zhou, Xin,Li, Liyuan,Chen, Quanyuan. "Enhanced liquid phase catalytic hydrogenation reduction of bromate over Pd-on-Au bimetallic catalysts". . p. 142 - 149. Retrieved 2018/06/20.