Isopropyl alcohol is a common choice for cleaning electronics, but using an expired bottle can be risky. While it has a shelf life of about three years, it slowly absorbs moisture from the air even when capped, diluting its concentration. For safe PC cleaning, isopropyl alcohol should be between 90 and 99 percent concentration to evaporate quickly and avoid leaving moisture on sensitive components. Over time, the water content increases, making it less effective and potentially harmful. Additionally, alcohol can damage acrylic, polycarbonate, and coated surfaces, and dry out rubber seals. For most cleaning tasks, compressed air and microfiber cloths are safer alternatives.
Always check manufacturer guidelines before using alcohol on screens or coated parts. If you must use it, ensure it's fresh and within the recommended concentration range. For dust filters and non-sensitive components, water rinsing followed by thorough drying is also effective. Proper storage away from heat and sunlight can help preserve the alcohol's strength. Ultimately, using the right tools and solutions ensures your PC remains clean without risking damage to its delicate internals.
Source: Engadget · Summarized by HeadlinesBriefing