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.
Chemical pneumonia is an irritation of the lungs that can cause a dry cough, headache, chest pain and more. Cryptococcosis is a lung disease causing a wide range of digestive, respiratory and cardiovascular symptoms. Symptoms of a foreign body in the nose include trouble breathing, pain, discharge, and bleeding. Histoplasmosis is a fungal infection of the lungs causing muscle aches, fever, chest pain, cough, and more. Narcotic abuse can cause fatigue, shallow breathing, anxiety, euphoria, vomiting, confusion, and constipation.