What are the hazards of benzene on the human body?

Benzene is a colorless transparent solvent with aromatic odor, very volatile. It is mainly in the form of gas through the respiratory tract into the body, resulting in human poisoning. Benzene poisoning is mainly damage to the nervous system and hematopoietic system. Symptoms in the nerve, the main performance is the head of the wrong, headache, insomnia, weakness, memory loss, etc.. The symptoms of the hematopoietic system, first of all, lead to a reduction in white blood cells, followed by a decrease in blood platelets and red blood cells. Next will make the skin dry, redness, itching, especially hot benzene will also cause skin blisters, resulting in the production of rubber fat. Due to the high toxicity of benzene, to prohibit the direct use of interior decoration.
Toluene and xylene is a colorless transparent solvent with a pungent odor, the toxicity of the volatile gas, although smaller than benzene, but the body is too much inhalation, it will also anesthesia nerve, stimulate the skin. Therefore, the relevant standards of the state has set a limited role.
Paint containing benzene, toluene or xylene solvent, a nitro coating, polyurethane coating, acrylic wood coatings, amino paint, vinyl chloride paint, phenolic paint etc., more or less containing benzene and other harmful substances. Now, paint manufacturers are actively trying to paint benzene harmful substances in the international scope of control.
Diluent, curing agent is easy to produce what harm?
In the use of solvent based wood coatings (paint), usually in order to facilitate coating, mixed into thinner, stir well after use, so that the paint film is more uniform, but also conducive to the film drying and curing. But paint thinner is organic compounds, such as common banana water is by benzene aromatic compounds and esters, ketones, alcohols, ethers compounds made, so that it can release volatile organic compounds and benzene and other pollutants (banana water banana odor actual is benzene aromatic volatile compounds produced smell) and damage to human health.
Polyurethane paint in the use of more than two or more components, in which there is a component of the curing agent, so that polyurethane paint can be formed in a relatively short period of time, to form a solid protective film. And main group of curing agent is toluene diisocyanate (TDI), is a kind of easy volatilization of harmful to human health macromolecule organic compound, in polyurethane paint speed setting of the film-forming process will be volatile free toluene diisocyanate (national restrictions on the release of a total of 0.7 g / L).
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