Chemical compound is a members-only quest item. It is used in the Digsite Quest to blow up bricks blocking the path below digsite. It is used with bricks and is light with a tinderbox. It is made by combining nitroglycerin, ammonium nitrate, ground charcoal and arcenia root (requires Herblore level 10). People with Dharok's occasionally drop this as Dharok's hits harder if the player wearing it has low health.
Warning: Dropping this item will inflict high damage against the player! It will inflict 65 damage!