| CAS Number | 9050-57-1 |
|---|---|
| Molecular Formula | C32H60O10 |
| Molecular Weight | 604.822 |
| InChI Key | HDTIFOGXOGLRCB-MDZDMXLPSA-N |
| LogP | 4.8 |
| Synonyms |
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Applications:
HPLC Separation of Barium Cation in the Presence of Citric Acid, Sucrose and Tween 80
July 8, 2011
Barium ion and citric acid are analyzed in the presence of sucrose and Tween 80 on Obelisc N HILIC mixed-mode column. Both compounds are retained in ion-exchange mode and HILIC is not employed with this method. Obelisc N HPLC column has basic and acidic ion-exchange groups separated by long hydrophilic chain. Presence of that long chain allows both cation- and anion-exchange mechanisms to exist simultaneously. Obelisc N column can be used for analysis of cation and anions in HILIC/ion-exchange mode and in ion-exchange mode. Analytes can be monitored by ELSD/CAD and LC/MS.
| Column | Obelisc N, 4.6×150 mm, 5 µm, 100A |
| Mobile Phase | MeCN |
| Buffer | AmAc pH 4.0 |
| Flow Rate | 1.0 ml/min |
| Detection | ELSD |
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| Class of Compounds |
Acid, Ion, Hydrophobic, Ionizable |
| Analyzing Compounds | Barium ion, Citric acid, Sucrose, Tween 80 |
Application Column
Obelisc N
SIELC has developed the Obelisc™ columns, which are mixed-mode and utilize Liquid Separation Cell technology (LiSC™). These cost-effective columns are the first of their kind to be commercially available and can replace multiple HPLC columns, including reversed-phase (RP), AQ-type reversed-phase, polar-embedded group RP columns, normal-phase, cation-exchange, anion-exchange, ion-exclusion, and HILIC (Hydrophilic Interaction Liquid Chromatography) columns. By controlling just three orthogonal method parameters - buffer concentration, buffer pH, and organic modifier concentration - users can adjust the column properties with pinpoint precision to separate complex mixtures.
Select optionsSucrose
Tween 80
HPLC Analysis of Polysorbate in Mixture with Amino Acids and Sugar
July 16, 2009
Polysorbates are a class of emulsifiers used in some pharmaceuticals and food preparation. They are often used in cosmetics to solubilize essential oils into water-based products. Polysorbates are oily liquids derived from PEG-ylated sorbitan (a derivative of sorbitol) esterified with fatty acids. Surfactants that are esters of plain (non-PEG-ylated) sorbitan with fatty acids are usually referred to by the name Span. It is often required to quantitate Polysorbate (Polysorbate/Tween 20, Polysorbate/Tween 40, Polysorbate 60/Tween 60 and Polysorbate 80) by HPLC in various formulations. Polysorbates exist in form of oligomers.
| Column | Primesep D, 3.2×50 mm, 5 µm, 100A |
| Mobile Phase | IPA |
| Buffer | Formic Acid |
| Flow Rate | 0.5 ml/min |
| Detection | ELSD |
| Class of Compounds |
Drug, Acid, Hydrophilic, Ionizable, Vitamin, Supplements, Amino acid |
| Analyzing Compounds | Glycine, Histidine, Sucrose, Polysorbate 20 |
Application Column
Primesep D
The Primesep family of mixed-mode columns offers a wide variety of stationary phases, boasting unprecedented selectivity in the separation of a broad array of chemical compounds across multiple applications. Corresponding Primesep guard columns, available with all stationary phases, do not require holders. SIELC provides a method development service available to all customers. Inquire about our specially-tailored custom LC-phases for specific separations.
Select optionsGlycine
Histidine
Polysorbate
Polysorbate 20
Polysorbate 80
Sucrose
Tween 20
Tween 80
