A lot of people are asking what is chemical hazards definition? This is very difficult to explain, let us feel it from the following several examples.
Chemical hazards definition---Benzene hazard
Benzene is a colorless gas with a special aromatic smell, has been determined by the World Health Organization as a strong carcinogen. Benzene is a major cause of childhood leukemia in recent years. Survey data show that, in the city of childhood leukemia patients, 90% of the family within a year of indoor decoration.
Inhalation of high concentrations of benzene in a short period of time, there will be the anesthetic effect of central nervous system, mild dizziness, headache, nausea, vomiting, chest tightness, fatigue and other phenomena, or even lead to coma, even due to respiratory and circulatory failure and death! If the long-term exposure to certain concentrations of benzene can cause chronic poisoning, headache, insomnia, mental low-spirited, memory loss and other symptoms of neurasthenia.
Chemical hazards definition---Harm of formaldehyde
Formaldehyde is a colorless, strong irritant gas, the World Health Organization has been identified as carcinogenic and teratogenic substances. The release of formaldehyde pollution, will cause the eye tears, cornea, conjunctival hyperemia, inflammation, skin allergies, nasopharyngeal discomfort, cough, bronchitis and other respiratory diseases, can cause nausea, vomiting, stomach disorders! Serious when it can cause persistent headache, pneumonia, pulmonary edema, loss of appetite, and even lead to death.
Chemical hazards definition---Hazards of ammonia
Some people may have long-term exposure to ammonia skin pigmentation or finger ulcers; short term inhalation of ammonia can occur after the tears, sore throat, hoarseness, cough, sputum with blood, chest pain, difficulty breathing, may be accompanied by dizziness, headache, nausea, vomiting, fatigue and other symptoms, severe pulmonary edema can occur, adult respiratory distress syndrome, and symptoms of respiratory tract irritation may occur. So the damage to the tissue is deeper and more serious than the acid material.
Chemical hazards definition---TVOC hazards
TVOC can cause the level of immune disorders affecting the central nervous system function, dizziness, headache, drowsiness, weakness, dizziness and other symptoms; may also affect the digestive system, decreased appetite, nausea, can be serious when the liver and hematopoietic system damage, nerve toxicity appeared.