This is the list of coastal counties that NOAA recommends for the Bureau of the Censusâ. Statistical Abstract publication series. There are 672 coastal counties including the District of Columbia in the United States. (285 in the Atlantic, 142 in the Gulf of Mexico, 87 in the Pacific, and 158 in the Great. Lakes).
Benzene is a natural constituent of crude oil, and is one of the most elementary petrochemicals. Benzene is an aromatic hydrocarbon and the second [ n ]- annulene ([6]-annulene), a cyclic hydrocarbon with a continuous pi bond.It is sometimes abbreviated Ph âH. Benzene is a colorless and highly flammable liquid with a sweet smell.enzene is an aromatic hydrocarbon and the second [ n ]- annulene ([6]-annulene), a cyclic hydrocarbon with a continuous pi bond. It is sometimes abbreviated Ph âH. Benzene is a colorless and highly flammable liquid with a sweet smell.
The chemical symbol for benzene is C6H6. Benzene is formed from both natural processes and human activities. It is produced from volcanoes and forest fires and is a natural part of crude oil, gasoline, and cigarette smoke. Diesel exhaust contains benzene.Benzene is one of the 20 most widely used chemicals in the United States. It is used to make other chemicals that are then used to make plastics, resins, nylon, and other synthetic fibers.ou can be exposed to benzene indoors at home, where the air can contain higher levels of benzene than outdoor air, from products such as glue, paint, furniture wax, and detergent. Approximately half the national exposure to benzene comes from smoking cigarettes or being exposed to cigarette smoke, indoors or outdoors.