Can Flow Technology Inc.
163 Ormond St. Suite 103, Brockville, Ontario, Canada, K6V 7E6
Phone:613-342-9797 Fax:613-342-6888 Cell:613-349-0656
info@canflo.ca
www.canflo.ca
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007-1 dimethylpolysiloxane This non-polar phase, which separates compounds according to boiling point, is probably the most frequently used phase type in GC. Bonding and crosslinking this general purpose GC phase increases the resistance to degradation by rinsing, large solvent injections and the deposition of non-volatiles. The 007-1 phase offers excellent efficiency and thermal stability. In addition, this non-polar phase is less susceptible to oxidation and hydrolysis than phases incorporating more polar functional groups.
007-10 and 007-20 (10% and 20% phenyl substitution, respectively) are the Quadrex designations of phenyldimethylpolysiloxane phases. The phenyl substitutions contribute to the "induced dipole" selectivity of these phases. A column coated with either phase displays excellent efficiency and thermal stability. These phases provide an excellent alternative for drug and environmental pollutant analyses where greater retention of aromatic compounds is necessary.
007-10 and 007-20 (10% and 20% phenyl substitution, respectively) are the Quadrex designations of phenyldimethylpolysiloxane phases. The phenyl substitutions contribute to the "induced dipole" selectivity of these phases. A column coated with either phase displays excellent efficiency and thermal stability. These phases provide an excellent alternative for drug and environmental pollutant analyses where greater retention of aromatic compounds is necessary.
007-1301 is a (6% cyanopropylphenyl) methylpolysiloxane. Overall, 007-1301 is a low polarity phase which exhibits excellent thermal stability. The cyanopropyl (permanent dipole) and the phenyl (polarizable) substituents provide a specific selectivity for polar and polarizable compounds. More of a boiling point phase than 007-1701 (14% cyanopropyl phenyl methylpolysiloxane), the 007-1301 exhibits less retention of polyaromatic compounds than 007-17 (50% phenyl methylpolysiloxane).
007-1701 is a (14% cyanopropylphenyl) methylpolysiloxane. The cyanopropyl functional groups provide a permanent dipole selectivity different from the induced dipole interactions of the phenyl groups. The overall "polarity" of this phase remains nominal when compared to the more highly cyanopropyl substituted phases such as 007-225 and 007-23. The 007-1701 phase is often used for solvents, pharmaceuticals, derivitized sugars and many environmental applications.
007-225 is a 50% cyanopropylphenyl methylpolysiloxane. This phase possesses both permanent dipole interactions (nitrile) as well as induced dipole (phenyl) and dispersion interactions. It has unique selectivity for derivitized compounds such as fatty acids and carbohydrates. Non-volatile residues can be rinsed from the column to restore column performance.
Quadrex 007-225 columns have been cited in a number of estrogen assay methods.
007-23 is a (78% cyanopropyl) methylpolysiloxane and is our most polar phase type. The strong permanent dipole interactions of this phase with unsaturated compounds yields separations according to geometric configurations of the double bonds. This phase is ideal for the separation of cis/trans isomers of fatty acid methyl esters (FAMEs) as well as the isomers of dioxins and furans. The 007-23 phase is bonded and crosslinked and the column performance can be restored by rinsing.
007-35 is a (35% phenyl) dimethylpolysiloxane phase. This phase is a compromise between 007-20 and 007-17 in phenyl content. It is a popular phase for drug analyses; and like the entire series of phenyl-substituted phases, columns coated with the 007-35 can be rinsed to remove non-volatile and high boiling contaminants.
007-5 phase is a (5% phenyl) methylpolysiloxane polymer. Like the 007-1 dimethylpolysiloxane phase, the 007-5 phase is a widely used general purpose GC phase ideal for a broad range of applications. The presence of the phenyl groups provides induced dipole interactions leading to degrees of increased retention for aromatic solutes. A 5% phenyl substitution causes a nominal increase in polarity; yet the 007-5 phase displays the attributes of a non-polar phase. It separates compounds according to boiling point, is another frequently used phase type in GC. Bonding and crosslinking this general purpose GC phase increases the resistance to degradation by rinsing, large solvent injections and the deposition of non-volatiles. The 007-5 phase offers excellent efficiency and thermal stability. In addition, this non-polar phase is less susceptible to oxidation and hydrolysis than phases incorporating more polar functional groups.
007-5MS, silphenylene polysiloxane phase. Traditional polysiloxane-type GC stationary phases degrade at elevated temperatures. The degradation process is well documented and consists of the thermal rearrangement of the siloxane backbone to produce cyclic groups. These groups are volatile and elute from the column as column 'bleed'. The silphenylene units (Fig. 1) within the 007-5MS backbone act as heat sinks and limit the formation of the cyclic groups normally associated with polysiloxane degradation.
007-608, 007-624, and 007-502 phases offer three variations of cyanopropylphenyl substitutions on a methylpolysiloxane backbone. These phases have been specifically designed for the analysis of volatile organic compounds and pesticides as specified in many EPA Methods including 502.1, 502.2, 503.1, 524.1, 524.2, 601, 602, 608, 624, 8010, 8011, 8015, 8020, 8240, and 8260. By using 007-502 and 007-624 phase types on 0.53mm I.D. columns, the entire range of volatile compounds, including gases, can be analyzed beginning at ambient temperatures.
007-65HT phases represent a (65% phenyl) methylpolysiloxane phase composition. They are a companion phase to the 007-17 (50% phenyl methylpolysiloxane), but the additional 15% phenyl substitution provides greater selectivity toward compounds exhibiting induced dipole effects. This enhanced selectivity is most evident in the analysis of triglycerides where the resolution is "fine tuned" over that of the 50% phenyl substitution.
007-CW and BTR-CW are ethylene glycol/siloxane copolymer phases. This polymer can be used to separate compounds at temperatures not normally associated with polyethylene glycol (PEG, Carbowax™) phases. Both the lower and upper temperature limits of traditional Carbowax type columns are extended with this phase.
In addition, Quadrex offers a modified version of the 007-CW phase, designated BTR-CW, which incorporates an anti-oxidant moiety to better withstand oxygen degradation. The BTR-CW phase offers increased thermal stability and longer column lifetimes. See additional information below.
The hydrogen bonding interactions of the 007-CW and BTR-CW phases makes them well suited for the analysis of polar compounds such as solvents, flavors, perfumes, and essential oils. These phases are not recommended for the analysis of mixtures containing silylating reagents. Carbowax is a Trademark of Union Carbide.
007-FFAP is a nitroterephthalic acid modified polyethylene glycol (PEG) polymer. This bonded acidic phase is ideal for the analysis of aqueous solutions of free fatty acids as well as fatty acid methyl esters. As with the 007-CW (and BTR-CW) polyethylene glycol phases, 007-FFAP is not recommended for the analysis of silylating reagents.
007-17 is a 50% phenyl methylpolysiloxane. The presence of the 50% phenyl groups increases the overall "polarity" of the phase and enhances the selectivity of induced dipole interactions resulting in greater retention of aromatic solutes. The 007-17 phase is widely used as an EPA Method confirmation column and provides for efficient separations of PAHs, and biomedical samples such as drugs, sugars and steroids.
WCOT (Wall Coated Open Tubular)
