24310

α-DEX^™ 120

L × I.D. 30 m × 0.25 mm, d_f 0.25 μm

• EC Number: 262-373-8
• UNSPSC Code: 41115710

Properties

• material: fused silica
• Quality Level: 100
• description: GC capillary column
• parameter: 30-230 °C temperature
• Beta value: 250
• df: 0.25 μm
• technique(s): gas chromatography (GC): suitable
• L × I.D.: 30 m × 0.25 mm
• matrix active group: non-bonded; 20% permethylated α-cyclodextrin in SPB-35 poly(35% diphenyl/65% dimethylsiloxane) phase
• application(s): agriculture; chemicals and industrial polymers; cleaning products; clinical; cosmetics; environmental; flavors and fragrances; food and beverages; forensics and toxicology; life science and biopharma; personal care; pharmaceutical (small molecule)
• column type: capillary chiral
• separation technique: chiral

Description

General description

Capillary GC column is also known as open tubular column. The carrier gas flows through the central aperture and is unrestricted throughout the length of the column.

Containing permethylated α-cyclodextrin embedded in an intermediate polarity stationary phase, Supelco α-DEX 120 columns provide unique selectivity for enantiomeric separations of small molecules. They are also recommended for separating positional isomers (phenols, xylenes, etc.).

Application

α-DEX^™ 120 was used in a GC column, in an experiment conducted to study the addition of catalytic enantioselective diethylzinc to a-substituted aldehyde, in presence of enantiopure ligand. It was also used to pack chiral column durin GC analysis, in an experiment to investigate lipase-mediated desymmetrization of glycerol with aliphatic and aromatic anhydrides.

Chem/Phys Resistance

Temp. Limits:

• 30 °C to 230 °C

Other Notes

We offer a variety of chromatography accessories including analytical syringes

Legal Information

DEX is a trademark of Sigma-Aldrich Co. LLC