Acetone
Definition and meaning of Acetone in chemistry.
Acetone is a clear, colorless, and highly volatile liquid solvent found in nearly every chemistry laboratory. It is the simplest possible ketone and has the chemical formula CH3COCH3. Its official IUPAC name is propanone.
In more detail
Acetone consists of a central carbonyl group covalently bonded to two methyl groups. A carbonyl group is simply a carbon atom double bonded to an oxygen atom. Because this carbonyl group sits directly between two other carbon atoms, chemists classify the molecule as a ketone.
Acetone is a fascinating chemical because it can dissolve an incredibly wide variety of solid and liquid substances. It features a polar carbonyl center. This center allows it to mix completely with polar water molecules.
It also has nonpolar methyl groups that help it dissolve oils, greases, resins, and many synthetic plastics. This versatile dual nature makes it one of the most popular industrial solvents in the world. It boils at a very low temperature of about 56 degrees Celsius.
This low boiling point means it evaporates rapidly. It dries very quickly after you use it to wash laboratory glassware. Students must handle acetone with extreme care.
Its invisible vapors are highly flammable and catch fire easily near electrical sparks. A common student misconception is that acetone is a harsh acid because of its strong, pungent smell. Acetone is actually a completely neutral organic molecule that does not release hydrogen ions into a water solution.
Key facts
| Formula | CH3COCH3 (C3H6O) |
|---|---|
| IUPAC Name | Propanone |
| Functional Group | Ketone (carbonyl center) |
| Boiling Point | Approximately 56 degrees Celsius |
| Miscibility | Mixes completely with water and organic solvents |
| Field | Organic Chemistry |
Acetone serves as the primary active ingredient in most commercial nail polish removers. When you rub the liquid onto painted fingernails, the aggressive solvent attacks the hardened nitrocellulose lacquer. It quickly dissolves the tough polymer network into a liquid sludge. You can then easily wipe the old polish away with a simple cotton swab before the liquid evaporates.
Frequently asked questions
Why is acetone considered such an effective solvent?
It contains both a polar carbonyl group and nonpolar methyl groups. This allows it to dissolve water-based compounds as well as stubborn oils and plastics.
Is acetone classified as an acid or a base?
It is neither an acid nor a base. Acetone is a neutral organic compound that does not alter the pH level when mixed with pure water.
Why does acetone feel so cold if you spill it on your skin?
Acetone is highly volatile and evaporates incredibly fast. As it turns into a gas, it quickly absorbs thermal energy from your skin to fuel the phase change.
Related terms
Sources & references
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