CAS Number: 75-05-8. The colorless liquid nitrile of acetic
acid used primarily in organic synthesis and as a solvent.
Chemical formula = C2H3N. Molecular weight = 41.05 g/mol.
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Acetonitrile has many uses, including as a solvent, for
spinning fibers, and in lithium batteries. It is primarily
found in air from automobile exhaust and manufacturing
facilities. Acute (short-term) inhalation exposure results in
irritation of mucous membranes. Chronic (long-term) exposure
results in central nervous system effects, such as headaches,
numbness, and tremors. No data are available on its
carcinogenic effects in humans; EPA has classified it as a
Group D, not classifiable as to human carcinogenicity.