Description: Yellow, crystals, crystalline powder, waxy mass or oily material
Melting point: About 37°C
Color reaction: A blue color develops, and upon standing it changes from blue-purple to red-brown through red-purple
IR: Reference and sample spectra exhibit similar intensities of absorption at the same wave numbers
Heavy Metal: NMT 20ppm
Limit of Menadione: No purple or no blue color is produced
Cis Isomer(TLC): The spot corresponding to relative Rf value 1.1 regarding to the principal spot from the sample solution is not more intense than the spot from the standard
Solution
Other Related Substances: The total area of peaks other than the peak of menatetrenone from the sample solution is not larger than the peak area of menatetrenone from the standard
solution
Water: NMT 0.5%
Residue on ignition: NMT 0.10%
Assay: 98.0 - 101.0%
