The B-Dex 225 is nonbonded, therefore it does not support aqueous injections. Injecting water can wash the phase out of the column. It's essential for both the samples and the carrier gas to be moisture free. This applies to all non-bonded phase columns, not just chiral columns.
24348
β-DEX™ 225
L × I.D. 30 m × 0.25 mm, df 0.25 μm
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About This Item
Código UNSPSC:
41115710
eCl@ss:
32119290
Preço e disponibilidade não estão disponíveis no momento.
Produtos recomendados
Materiais
fused silica
descrição
GC capillary column
Parâmetros
30-230 °C temperature
Valor beta
250
df
0.25 μm
técnica(s)
gas chromatography (GC): suitable
C × D.I.
30 m × 0.25 mm
Grupo ativo da matriz
non-bonded; 25% 2,3-di-O-acetyl-6-O-TBDMS-β-cyclodextrin in SPB-20 poly(20% phenyl/80% dimethylsiloxane) phase
aplicação(ões)
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)
tipo de coluna
capillary chiral
técnica de separação
chiral
Categorias relacionadas
Descrição geral
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.[1]
The Supelco β-DEX 225 is a modified form of the β-DEX 325 phase, and employs acetyl derivatives at the 2,3-positions instead of more traditional methyl derivatives. The chiral stationary phase in β-DEX 225 columns contains 2,3-di-O-acetyl-6-0-TBDMS-β-cyclodextrin embedded in an intermediate polarity phase. These columns provide unique selectivity for enantiomeric separations of small molecules: alcohols, aldehydes (e.g., 2-phenylpropionaldehyde), esters (e.g. methyl malate, methyl lactate), flavor compounds and ketones.
Resistência química/física
Temp. Limits:
- 30 °C to 230 °C
Outras notas
We offer a variety of chromatography accessories including analytical syringes
Informações legais
DEX is a trademark of Sigma-Aldrich Co. LLC
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Scott RPW.
Introduction to Analytical Gas Chromatography, 101-102 (1997)
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After reading the care document and noting that the CHIRALDEX TA columns should not be exposed to moisture in the sample, is it acceptable to inject aqueous samples into the beta DEX 225 column?
1 answer-
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