WK36121 New Test Method for Determination of p-Toluic Acid and 4-Carboxybenzaldehyde in Purified Terephthalic Acid by High Performance Liquid Chromatography
WK36122 New Test Method for Determination of p-Toluic Acid and 4-Carboxybenzaldehyde in Purified Terephthalic Acid by High Performance Capillary Electrophoresis
WK36157 New Test Method for Maleic Acid in Maleic Anhydride by Potentiometric Titration
WK36158 New Test Method for Color of Maleic Anhydride in the Molten State and After Heating (Platinum-Cobalt Scale)