is there an expiration date on this item? Does opening the container impact the expiration date if there is one? And is the item in a special plastic container or can it be placed in any container for storage?

1. There is an expiration date. It is 4 years from the date of manufacture. 2. Opening the container at the time of use should not present a problem provided it is closed and tightly sealed right after use. 3. Store in the original container protected from direct sunlight in a dry, cool and well-ventilated area, away from incompatible materials and food and drink.
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