An arylene is a bivalent radical produced by the removal of two hydrogen atoms from the benzene ring of an aromatic compound.
Acrylene (and polyacrylene) is quick-setting synthetic material used in casting and textiles as dyes. Arylene is a radical that is bivalent and formed by removal of hydrogen from two carbon sites on an aromatic nucleus.
In DB-624, the stationary phase is a phenyl arylene polymer that has a 6% cyanopropyl substituent. This phase is commonly used in gas chromatography for separating a wide range of analytes, especially non-polar and moderately polar compounds.