Benzene is used mainly as an intermediate to make other chemicals, above all ethylbenzene, cumene, cyclohexane, nitrobenzene, and alkylbenzene. More than half of the entire benzene production is processed into ethylbenzene, a precursor to styrene, which is used to make polymers and plastics like polystyrene and EPS. Some 20% of the benzene production is used to manufacture cumene, which is needed to produce phenol and acetone for resins and adhesives.
The main symptoms of a chest infection can include: 1  a persistent cough. 2  coughing up yellow or green phlegm (thick mucus), or coughing up blood. 3  breathlessness or rapid and shallow breathing. 4  wheezing. 5  a high temperature (fever). 6  a rapid heartbeat. 7  chest pain or tightness.
Lymph node swelling in the armpits or abdomen might be cause for more immediate concern. Lymphoma may also cause swelling in the chest area which may interfere with breathing. Lymphomas of the skin often appear as itchy red or purple lumps. Swollen lymph nodes are usually tender and painful to some degree. However, in the case of non-Hodgkin lymphoma, lymph nodes might swell and become firm without any evident pain. Chest pain. Chest pain may occur if the lymphoma affects the thymus. Unexplained weight loss.