24348

β-DEX^™ 225

L × I.D. 30 m × 0.25 mm, d_f 0.25 μm

• Código UNSPSC: 41115710
• eCl@ss: 32119290

Propriedades

• 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

Descrição

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.

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