Acetone is known to be a type of flammable product that can be used for different purposes. This is known as a solvent that is used not only in the pharmaceutical industry but also in the cosmetic industry. A lot of people are more familiar with acetone as something that can be used when removing nail polish or even other types of paint. Plastic, on the other hand, comes in different types and kinds. There are some hard plastics that are available that can be used as containers. There are also some plastic types that are being used to carry various items. Plastic is solid while acetone is in liquid form.