Is there an expiration date for isopropanol?

Yes, isopropanol (also known as isopropyl alcohol or rubbing alcohol) does have an expiration date. However, the expiration date is more related to the quality and effectiveness of the product rather than safety concerns.

Isopropanol is a volatile alcohol that can evaporate over time, leading to a decrease in its concentration. Additionally, it can become contaminated with impurities, such as bacteria or dust, which can affect its efficacy.

Typically, isopropanol has a shelf life of around two to three years when stored properly in a cool, dry place away from direct sunlight. It is important to note that the expiration date provided by the manufacturer is based on unopened containers. Once opened, the shelf life of isopropanol may be reduced due to exposure to air and potential contamination.

To ensure the effectiveness of isopropanol, it is recommended to check the product's appearance, smell, and concentration before use. If you notice any significant changes or if the product has exceeded its expiration date, it is best to discard it and obtain a fresh bottle.