Para-Benzoquinone Chemical name: 1, 4-Benzoquinone, p-Benzoquinone Synonyms name: 2, 5-Cyclohexadiene-1, 4-dione, Quinone CAS NO. :106-51-4 Technical conditions: Appearance: Yellow crystal Content: 99. 0% min Melting point: 112. 0-116. 0°C Moisture: 0. 5%max Residue after ignition: 0. 05%max Usage: An excellent polymerization inhibitor particularly for vinylacetate monomer and unsaturated poyester. Also, can be used as pharmaceutical inertmediate. Packing: In 30kg/drum cardboard drum lined with double plastic bags.