The density of acetonitrile is 6.527 pounds per gallon, or 0.7822 grams per milliliter, at 68 degrees Fahrenheit. The density of this chemical lightens to 6.481 pounds per gallon, or 0.7766 grams per milliliter, at 77 degrees Fahrenheit.
The boiling point of the solvent is nearly 179 degrees Fahrenheit, and the freezing point is around -47 degrees Fahrenheit. The flash point, or the temperature at which acetonitrile gives off sufficient vapors to ignite in air, is 42 degrees Fahrenheit.
Acetonitrile is a flammable liquid at room temperature that is stored in containers designed to hold such fluids. Otherwise known as methyl cyanide, acetonitrile is made of two carbon atoms, three hydrogen atoms and one nitrogen atom.