Description

• Application: Coulometric method with titratable impurity analysis and mass balance method: This study presents a method to convert acidimetric purity to chemical purity for potassium hydrogen phthalate, which is validated using quantitative nuclear magnetic resonance (qNMR) techniques, enhancing the standards for analytical chemistry (Huang T et al., 2023). Triplet states of the nonlinear optical chromophore DCM in single crystals: Investigates the triplet excited states of the nonlinear optical chromophore DCM in potassium hydrogen phthalate single crystals, linking these states to single-molecule dark states, significant for the development of optical materials (Barbon A et al., 2009).
• Analysis Note: Assay (Perchloric acid titration from dried substance): ≥ 99.5 %Identity (IR-spectrum): passes testIn water insoluble matter: ≤ 0.005 %Chloride (Cl): ≤ 0.002 %Sulfur compounds (as SO₄): ≤ 0.005 %Heavy metals (as Pb): ≤ 0.0005 %Cu (Copper): ≤ 0.0002 %Fe (Iron): ≤ 0.0005 %Na (Sodium): ≤ 0.01 %Pb (Lead): ≤ 0.0005 %Loss on Drying (105°C): ≤ 0.2 %Corresponds to Reag. Ph Eur
• Legal Information: EMSURE is a registered trademark of Merck KGaA, Darmstadt, Germany