1.04907

Potassium bromide

for IR spectroscopy Uvasol^®

• Synonym(s): Potassium bromide, Hydrobromic Acid Potassium Salt
• Empirical Formula (Hill Notation): BrK
• CAS Number: 7758-02-3
• Molecular Weight: 119.00
• MDL number: MFCD00011358
• UNSPSC Code: 12352302
• EC Index Number: 231-830-3
• NACRES: NA.03

Properties

• vapor pressure: 1.3 hPa ( 795 °C)
• Quality Level: 100
• form: solid
• potency: >2000 mg/kg LD₅₀, oral (Rat)
• technique(s): IR spectroscopy: suitable
• pH: 5.5-8.5 (20 °C, 50 g/L in H2O)
• bp: 1435 °C/1013 hPa
• mp: 730 °C
• solubility: water: soluble (119 g/l at 20 °C (68 °F))
• density: 2.75 g/cm³ at 20 °C
• bulk density: 900‑1000 kg/m³
• application(s): general analytical
• storage temp.: 2-30°C
• SMILES string: [K+].[Br-]
• InChI: 1S/BrH.K/h1H;/q;+1/p-1
• InChI key: IOLCXVTUBQKXJR-UHFFFAOYSA-M

Description

General description

Potassium bromide is transparent from the near UV to long wave IR wavelengths. In IR-spectroscopy, solid samples which are difficult to melt or dissolve in any suitable IR-transmitting solvent, are analyzed by grinding with Potassium bromide powder, and pressing into a disc. This procedure has a high quality demand of the used potassium bromide. Potassium bromide Uvasol is adjusted to a mean particle size of 150 μm. This is sufficient for the preparation of perfectly good pellets without the need for further pre-treatment and the associated risk of contamination. It also retains its powdery form over a period of years if stored in an air-tight condition. Its physical suitability for pelletising is checked by a special application test and its chemical purity established by full spectrum FT-IR analysis.

Application

• A method for lipoprotein (a) Isolation from a small volume of plasma with applications for clinical research.: This study presents a method for isolating lipoprotein(a) using potassium bromide, which is significant for analytical applications in clinical research. The method′s precision enhances its potential utility in clinical diagnostics (Mueller et al., 2022).


• Measurement uncertainty of lactase-containing tablets analyzed with FTIR.: This research evaluates the uncertainty in measuring lactase in tablets using Fourier Transform Infrared Spectroscopy (FTIR) with potassium bromide. The study highlights the compound′s importance in enhancing measurement accuracy in pharmaceutical analysis (Paakkunainen et al., 2014).


• MCM-41-supported oxo-vanadium(IV) complex: a highly selective heterogeneous catalyst for the bromination of hydroxy aromatic compounds in water.: This study demonstrates the use of potassium bromide in synthesizing a heterogeneous catalyst, showcasing its application in selective bromination reactions, crucial for developing efficient chemical synthesis processes (Bhunia et al., 2011).


• Proteomics and lipids of lipoproteins isolated at low salt concentrations in D2O/sucrose or in KBr.: The research investigates the proteomics and lipid profiles of lipoproteins isolated using potassium bromide, emphasizing its role in enhancing the resolution and accuracy of lipidomic studies in biochemistry (Ståhlman et al., 2008).


• Single-drop and nanogram level determination of sulfite (SO3(2-)) in alcoholic and nonalcoholic beverage samples based on diffuse reflectance fourier transform infrared spectroscopic (DRS-FTIR) analysis on KBr matrix.: This article highlights the innovative use of potassium bromide in the analysis of sulfite levels in beverages, showcasing its utility in food and beverage quality control (Verma et al., 2007).

Linkage

Replaces: PX1378

Analysis Note

Application test: passes test
Absorbance(2g pressed disk, 0.5 cm layer thickness)(Water; 3775-3050/1760-1520 cm⁻¹): ≤ 0.15
Absorbance(2g pressed disk, 0.5 cm layer thickness)(CH-compounds; 3050-2750 cm⁻¹): ≤ 0.004
Absorbance(2g pressed disk, 0.5 cm layer thickness)(other ; 4000-400 cm⁻¹): ≤ 0.020
Particle Size (d10): ≤ 100 µm
Particle Size (d50): ≤ 200 µm
Particle Size (d90): ≤ 500 µm

Other Notes

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Legal Information

UVASOL is a registered trademark of Merck KGaA, Darmstadt, Germany

Safety Information

• Pictograms: GHS07
• Signal Word: Warning
• Hazard Statements: H319
• Precautionary Statements: P264 - P280 - P305 + P351 + P338 - P337 + P313
• Hazard Classifications: Eye Irrit. 2
• Storage Class Code: 13 - Non Combustible Solids
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable