Acetone is a volatile and flammable liquid, which is commonly used as a solvent and cleaning agent. In some countries and regions, the purchase of acetone is illegal due to its potential use in the production of drugs. However, in other countries and regions, the purchase of acetone is legal, and there are many ways to obtain acetone.

For example, acetone can be produced by the decomposition of acetic acid in the presence of catalysts or heat. It can also be obtained by reacting acetic acid with other compounds such as formaldehyde or ketones. In addition, some natural products such as essential oils and plant extracts may also contain acetone.

In some countries and regions, the purchase of acetone is illegal due to its potential use in the production of drugs, which may pose a threat to public health and safety. Therefore, these countries and regions have implemented strict regulations on the purchase and use of acetone. For example, China has implemented a ban on the purchase and use of acetone for non-industrial purposes. If someone is found to buy or use acetone for non-industrial purposes, they may face serious legal consequences.

However, in other countries and regions, the purchase of acetone is legal, and people can buy acetone through various channels. For example, in the United States, acetone is widely used in industry and can be purchased from chemical companies or online stores. In addition, some people may obtain acetone through natural products such as essential oils or plant extracts.

In conclusion, whether it is illegal to buy acetone depends on the laws and regulations of each country and region. If you want to know whether the purchase of acetone is legal in your country or region, you can consult the relevant laws and regulations or seek professional legal advice. In addition, if you need to use acetone, you should follow the safety regulations and ensure that your use complies with the laws and regulations of your country or region.