Much of the natural gas is piped out of the state into Ohio (even into the northern parts), Kentucky, Pennsylvania and Maryland; within the state gas has been utilized as a fuel in carbon black and glass factories.
Low-density polythene is also often protected by carbon black which absorbs the ultraviolet light which causes free radical production (see p.54 ).
Carbon Black carbon Black Carbon black is a powdered form of elemental carbon.
The main ingredient, carbon black is mildly toxic, but modern machines with replaceable toner cartridges minimize exposure.
The two materials investigated were a carbon black filled high density polyethylene (HDPE) and a filled ethylene vinyl acetate (EVA ).
