Shelf Life of Diluted Chloroxylenol (PCMX) Solution

Based on the information available for Chloroxylenol (PCMX) (15% Water Soluble), the stated shelf life of at least 2 years applies to the original, undiluted 15% concentration when stored properly in its sealed container, away from direct sunlight and heat, at room temperature.

When you dilute this solution to a final concentration of 0.15%, the shelf life of the resulting solution is generally shorter than the original concentrate. The exact duration can vary significantly depending on several factors:

• Purity of the water used: Using distilled or deionized water is better than tap water.
• Cleanliness of the container: The container used for dilution and storage must be thoroughly clean and preferably sterilized to prevent microbial contamination.
• Storage conditions: Storing the diluted solution in a cool, dark place in a tightly sealed container will help maintain its stability. Exposure to light, heat, and air can degrade the solution.
• Potential contamination: Each time the container is opened, there is a risk of introducing microbes from the air.

Since there is no specific shelf life data for a 0.15% diluted solution, it is difficult to give an exact timeframe. As a general guideline for diluted solutions, especially those used for purposes where microbial control is important, it is often recommended to use them relatively quickly after preparation (e.g., within a few weeks to a few months) and to observe for any signs of degradation like cloudiness, changes in color, or unusual odor.

To maximize the shelf life of your 0.15% solution, store it in a clean, airtight container away from light and heat. If possible, prepare only the amount you need for immediate use.