Xylenes are a group of aromatic hydrocarbons with the chemical formula C₈H₁₀. They are colorless liquids with a sweet odor and are found naturally in petroleum and coal tar. Xylene exists in three isomeric forms:
Xylene is also used in the production of terephthalic acid, a precursor to polyester fiber.
Exposure to xylene can occur through inhalation, ingestion, or skin contact. Inhalation is the most likely route of exposure for most people. Short-term exposure to high levels of xylene can cause dizziness, headache, nausea, vomiting, and irritation of the nose and throat. Long-term exposure to xylene can damage the nervous system, kidneys, and liver.
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