Separation of Diacid Hydrophobic and Ion Exchange Modes

Primesep B combines a hydrophobic, reversed-phase mechanism with ion exchange to separate the diacids, fumaric, benzoic, phthalic, naphthoic, and maleic acids. Changing the acetonitrile content of the mobile phase reverses the peak order for naphthoic and maleic acids. Primesep B combines reversed-phase and anion-exchange mechanism with a mobile phase of water, acetonitrile (MeCN, ACN) and trifluoracetic acid (TFA) and UV detection at 250 nm.

Application Analytes:

Benzoic Acid
Dicarboxylic Acids
Fumaric Acid
Maleic Acid
Naphthoic Acid
Phthalic Acid