Mercury liquid Mercury (Hg): 99.9% - 99.99995% Si: 0.0004% Max. Fe: 0.0002% Max. Ca: 0.0001% Max. Pb, Cu, Zn: Trace Used in 1. mercury compounds. 2. catalytic agent and cooling agent. 3. mercury thermometer, hematomanometer, barometer and some other instruments. 4. lighting industry, manufacture mercury lamp, fluorescent lamp, ultraviolet light, etc. 5. pharmaceutical industry used for mercurochrome and dental additive. 6. mining industry as gold purification medium. Packing 34.5kg/flask, 1 flask/wooden case.