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Supelco

GC Stationary Phase

phase DC-550, bottle of 50 g

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agency

meets requirements for USP G28

packaging

bottle of 50 g

parameter

20-250 °C temp. range

technique(s)

gas chromatography (GC): suitable

matrix active group

DC-550 phase

solubility

acetone, toluene: soluble

column type

packed GC

General description

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 a few parameters that should be considered before choosing a stationary phase.
Synthesized specifically to be purer, of narrow molecular weight range, and without trace catalysts or impurities for use as a GC stationary phase.

Application

DC-550 may be used as stationary phase along with other stationary phases to determine the relationship between the Kovats′ coefficient and the retention polarity for silicone stationary phases and their mixtures.

Storage Class

10 - Combustible liquids

wgk_germany

WGK 3

flash_point_f

437.0 °F - closed cup

flash_point_c

225.00 °C - closed cup

ppe

Eyeshields, Gloves


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Kovats' coefficients for predicting polarities in silicone stationary phases and their mixtures.
Fernandez-Sanchez, E., et al.
Chromatographia, 31, 75-79 (1991)
James P. Lodge, Jr.
Methods of Air Sampling and Analysis, 98-98 (1988)
David B. Troy, Paul Beringer
Remington: The Science and Practice of Pharmacy, 605-605 (2006)

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