Tetrachloroethylene For Spectroscopy Uvasol 500ml

Tetrachloroethylene for spectroscopy Uvasol: Description and propertiesTetrachloroethylene (CCl), also known as perchloroethylene or PCE, when designated as a Uvasol grade solvent, refers to a high-purity solvent specifically designed for use in UV/Vis and infrared spectroscopy. Uvasol is a registered trademark of Merck KGaA, Darmstadt, Germany. Here's a breakdown of its description and properties:Key characteristics

• High purity and optical transparency: Uvasol solvents are engineered to provide the best optical purity, ensuring accurate and reliable spectroscopic analysis without interference from impurities that absorb UV or IR light or fluoresce.
• Minimal impurities: Tetrachloroethylene, Uvasol grade, is subjected to stringent purification procedures, resulting in minimal levels of impurities like water, acidity, alkalinity, and hydrocarbons.
• Excellent UV transmittance: Uvasol solvents offer optimal light transmission across the UV-Vis spectrum, allowing for precise measurement of analytes.
• Consistent batch quality: The manufacturing process for Uvasol solvents aims for exceptional batch-to-batch consistency, reducing the need for repeat analyses.
• Suitable for various applications: Beyond UV-Vis spectroscopy, Uvasol solvents, including tetrachloroethylene, are also suitable for other analytical techniques like infrared (IR) spectroscopy. 

Chemical and physical properties

• Appearance: Clear, colorless liquid.
• Empirical Formula (Hill Notation): CCl.
• CAS Number: 127-18-4.
• Molecular Weight: 165.83.
• Assay (GC): Typically 99.9%.
• Boiling Point: 121 C (at 1013 hPa).
• Melting Point: -22 C.
• Density: 1.62 g/cm at 20 C.
• Vapor Pressure: 19 hPa (20 C).
• Solubility (in water): Slightly soluble (0.16 g/L).
• Transmittance: Minimum transmittance values are specified at various wavelengths, for example, 20% at 290 nm, 65% at 295 nm, and 85% at 305 nm. 

Importance in spectroscopyUsing high-purity solvents like tetrachloroethylene Uvasol is crucial for achieving accurate results in UV/Vis and IR spectroscopy. Traces of contaminants in solvents can significantly affect spectral readings, leading to false positives, distorted peaks, and incorrect interpretations of analytical data. The meticulous purification and rigorous quality control applied to Uvasol grade solvents help minimize these interferences, thereby ensuring the reliability and validity of the analytical results.