| Synonyms |
|---|
Applications:
HPLC Analysis of Paraben Preservatives on Newcrom AH Column
October 29, 2020
| Column | Newcrom AH, 3.2×100 mm, 5 µm, 100A |
| Mobile Phase | MeCN/H2O – 30/70% |
| Buffer | H2SO4 – 0.1% |
| Flow Rate | 0.5 ml/min |
| Detection | UV, 270 nm |
| Class of Compounds |
Preservatives, Hydrophobic |
| Analyzing Compounds | Methyl Paraben, Ethyl Paraben, Propyl Paraben |
Application Column
Newcrom AH
The Newcrom columns are a family of reverse-phase-based columns. Newcrom A, AH, B, and BH are all mixed-mode columns with either positive or negative ion-pairing groups attached to either short (25 Å) or long (100 Å) ligand chains. Newcrom R1 is a special reverse-phase column with low silanol activity.
Select optionsMethylparaben
Methylparaben sodium
Parabens
Propylparaben
Propylparaben sodium
HPLC Separation of Parabens and Benzoic Acid
June 5, 2006
| Column | Newcrom B, 3.2×100 mm, 3 µm, 100A |
| Mobile Phase | MeCN/H2O – 40/60% |
| Buffer | |
| Flow Rate | 0.5 ml/min |
| Detection | UV 275nm |
Parabens possess antibacterial and antifungal properties and are therefore widely used in pharmaceutical and cosmetic industries as preservatives in products. Parabens and benzoic acid can be baseline separated in a short time frame using Primesep B2 reverse-phase HPLC column with a simple mobile phase of water, acetonitrile (ACN, MeCN) and phosphoric acid of 0.1% as buffer. UV detection at 210nm.
| Column | Primesep B2, 4.6×150 mm, 5 µm, 100A |
| Mobile Phase | MeCN/H2O |
| Buffer | H3PO4 |
| Flow Rate | 1.0 ml/min |
| Detection | UV, 210 nm |
| Class of Compounds |
Acid, Hydrophilic, Preservative |
| Analyzing Compounds | Methyl paraben, Benzoic Acid, Propyl paraben |
Application Column
Newcrom B
The Newcrom columns are a family of reverse-phase-based columns. Newcrom A, AH, B, and BH are all mixed-mode columns with either positive or negative ion-pairing groups attached to either short (25 Å) or long (100 Å) ligand chains. Newcrom R1 is a special reverse-phase column with low silanol activity.
Select options
Primesep B2
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 optionsMethylparaben
Parabens
Propylparaben
