Calcium carbide - is applied to receiving acetylene, calcium cyanamide, it is applied by production of acetylene black and products of organic synthesis, at recovery of alkali metals, carrying out flame welding by acetylene. It is possible to buy zinc sulfate in state of emergency "Optimum System" both at retail and wholesale. The order can be made behind phone (032) 244-37-00. Website http://www.systopt.com.ua/statja-bloga-polnostju/items/kalcij-karbid.html