Sources of Exposure:
- Mainly by inhalation of vapors.
- Production occurs during petroleum refining.
- Primary use is as a motor fuel additive.
- Automotive emissions, poor emission-control devices on older vehicles, poor maintenance practices, diesel engine exhaust.
- Solvent in coatings, paint thinners, wood preservatives, cleaners, dry cleaners, degreasers, aerosols, pesticides, printing and inks.
- Component of white spirit, the most widely used solvent in the paint and coating industry.
- Manufacture of pharmaceuticals, asphalt products, lacquers, varnishes, dyes, perfumes.
- Occupational Exposure: scientific labs, janitor/cleaner, dry cleaning industry, automobile body and related repairers, construction laborers, house painters, screen cleaning processes, ski boots finishing, and telephone cable assembly.
- People who do considerable home maintenance work or hobby work may be exposed via inhalation or dermal contact with the solvent.
Effects:
- Irritation of mucous membranes, dermatitis, dizziness, “drunkenness”, fatigue, headache, anxiety, nervousness.
- Cyanosis, cognitive and motor impairment, apnea, burst of perspiration, cardiac arrest.
- Diarrhea, abdominal pains, nausea, blurred vision.
- Low frustration tolerance, lack of initiative, apathy, depression, irritability (painter’s syndrome).
- Neurotoxic. Carcinogenic.
- Decreased erythrocyte, leukocyte and platelet counts.
Glomerulonephritis, renal dysfunction.
Metabolism:
Metabolized in the liver by cytochrome P-450 dependent multifunction oxidase enzymes, conjugated with glucuronic acid, glycine, or sulfates for urinary excretion.
Lipophilic and may accumulate in fat and fatty tissues.
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