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24310 Supelco

α-DEX 120

L × I.D. 30 m × 0.25 mm, df 0.25 μm

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Properties

Related Categories α-DEX 120, All Gas Chromatography Columns, Analytical/Chromatography, Capillary GC Columns, Capillary GC Columns, by name,
Quality Level   100
material   fused silica
description   GC capillary column
parameter   30-230 °C temperature
Beta value   250
df   0.25 μm
application(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
Featured Industry   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

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Vials
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Septa and Specialized Hand Tools
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Legal Information

DEX is a trademark of Sigma-Aldrich Co. LLC

Safety & Documentation

Safety Information

Symbol 
Signal word 
Warning
Hazard statements 
Precautionary statements 
Target organs 
Lungs
WGK Germany 
nwg
RTECS 
VV7328000

Documents

Certificate of Analysis (COA)

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Protocols & Articles

Articles

GC Analysis of Mandelic Acid Methyl Ester Enantiomers on α-DEX™ 120 and γ-DEX™ 120

From our library of Articles, Sigma-Aldrich presents GC Analysis of Mandelic Acid Methyl Ester Enantiomers on α-DEX™ 120 and γ-DEX™ 120
Keywords: Chromatography, Flame ionization detector, Gas chromatography

GC Analysis of Menthol Enantiomers on α-DEX™ 120

From our library of Articles, Sigma-Aldrich presents GC Analysis of Menthol Enantiomers on α-DEX™ 120
Keywords: Chromatography, Cosmetics, Flame ionization detector, Gas chromatography, Purification

GC Analysis of Terpinen-4-ol and Methyl Mandelate Enantiomers on α-DEX 120, β-DEX 120, and γ-DEX 120

From our library of Articles, Sigma-Aldrich presents GC Analysis of Terpinen-4-ol and Methyl Mandelate Enantiomers on α-DEX 120, β-DEX 120, and γ-DEX 120
Keywords: Chromatography, Flame ionization detector, Gas chromatography, Purification

Related Content

How to Choose a Capillary GC Column

An optimized chromatographic separation begins with the column. The selection of the proper capillary column for any application should be based on four significant factors:
How to Choose a Capillary GC Column
Keywords: Chromatography, Condensations, Gas chromatography, Immobilization, Mass spectrometry, Pesticides, Separation, Size-exclusion chromatography, Solid phase microextractions, Solvents, Vaporization

Peer-Reviewed Papers
15

References

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