21032

GC 固定相

phase Carbowax 20M, bottle of 50 g

• UNSPSCコード: 23151817

特性

• 認証: meets requirements for USP G16
• 品質水準: 100
• 形状: solid
• 包装: bottle of 50 g
• パラメーター: 60-225 °C temp. range
• テクニック: gas chromatography (GC): suitable
• マトリックス活性基: Carbowax 20M phase
• 溶解性: chloroform: soluble
• McReynolds定数: 17, 86, 48, 69, 56
• カラムタイプ: packed GC

詳細

詳細

GC methods are divided into two classes depending on the nature of stationary phases; gas-solid chromatography (GSC) and gas-liquid chromatography (GLC). GSC has solid adsorptive material and solute particles are removed from mobile phase by electrostatic forces. GLC has a thin layer of liquid coated or bonded on the surface of an inert particle or on the walls of the column where solute particles are retained in the liquid phase based on their partition coefficients. The primary necessity of a stationary phase is to provide sample separation sustaining phase integrity over a reasonable period of time. It should be stable for the chemical and thermal changes. Selectivity, peak symmetry, analysis time, degree of separation, peak tailing are few parameters that should be considered before choosing a stationary phase. Carbowax 20M is a polar liquid phase suitable as stationary phase for gas chromatography. It consists of two units of (HC₂-CH₂O)₆₀₀ with OH terminals connected through a hydrophobic portion. This structure of the polymer makes it suitable for being used as a solvent for polar molecules such as cyclodextrin derivatives. It exhibits good selectivity toward alcohols, diols and aromatic isomeric molecules.

GCの固定相として使用するために、純度を高く、分子量範囲を狭く、痕跡レベルの触媒や不純物を含まないように特に合成しました。

アプリケーション

Carbowax 20M may be used to test different relative amounts of crosslinking reagents by coating the inner wall of the capillary, to optimizing the capillary column performance.

安全性情報

• 保管分類コード: 11 - Combustible Solids
• WGK: WGK 3
• 引火点(°F): Not applicable
• 引火点(℃): Not applicable