Creosote ( CASRN 8001-58-9 )   As such , the Federal Occupational Safety and Health Administration ( OSHA ) has set a permissible exposure limit of 0.2 milligrams of coal tar creosote per cubic meter of air ( 0.2mg/m3 ) in the workplace during an 8-hour day , and the Environmental Protection Agency ( EPA ) requires that spills or accidental releases into the environment of one pound ( 2.2kg ) or more of creosote be reported to them .
One pound of creosote is equivalent to less than 1.2kg .