Description

• Application: Simultaneous determination of monochloropropanediol esters and glycidyl esters in vegetable oils by acidic transesterification-gas chromatography-mass spectrometry.: This study by Wang et al. presents a method for detecting harmful compounds in vegetable oils using sulfuric acid for transesterification, followed by GC-MS analysis (Wang et al., 2022).Evaluation of an improved acid hydrolysis-HPLC assay for the acetyl content in chitin and chitosan.: Ng et al. developed an enhanced HPLC method for measuring acetyl content in biopolymers, utilizing sulfuric acid for hydrolysis to ensure accurate quantification (Ng et al., 2006).
• Analysis Note: Assay (alkalimetric): ≥ 98.0 %Colour: ≤ 10 HazenChloride (Cl): ≤ 0.00001 %Nitrate (NO₃): ≤ 0.00002 %Phosphate (PO₄): ≤ 0.00005 %Ag (Silver): ≤ 0.000002 %Al (Aluminium): ≤ 0.000005 %As (Arsenic): ≤ 0.000001 %Ba (Barium): ≤ 0.000005 %Be (Beryllium): ≤ 0.000001 %Bi (Bismuth): ≤ 0.00001Ca (Calcium): ≤ 0.00002 %Cd (Cadmium): ≤ 0.000002 %Co (Cobalt): ≤ 0.000001 %Cr (Chromium): ≤ 0.000005 %Cu (Copper): ≤ 0.000001 %Fe (Iron): ≤ 0.00001Ge (Germanium): ≤ 0.000005 %K (Potassium): ≤ 0.00001 %Li (Lithium): ≤ 0.000001 %Mg (Magnesium): ≤ 0.000005 %Mn (Manganese): ≤ 0.000001 %Mo (Molybdenum): ≤ 0.000005 %NH₄ (Ammonium): ≤ 0.0002 %Na (Sodium): ≤ 0.00005 %Ni (Nickel): ≤ 0.000002 %Pb (Lead): ≤ 0.000002 %Se (Selenium): ≤ 0.0001 %Sr (Strontium): ≤ 0.000002 %Ti (Titanium): ≤ 0.00001Tl (Thallium): ≤ 0.000005 %V (Vanadium): ≤ 0.000001 %Zn (Zinc): ≤ 0.000005 %Zr (Zirconium): ≤ 0.00001Substances reducing potassium permanganate (as SO₂): ≤ 0.0002 %Residue on ignition: ≤ 0.0005 %Date of expiry: see product label
• Legal Information: EMSURE is a registered trademark of Merck KGaA, Darmstadt, Germany