I am wondering this same thing. Just purcahsed an unopened (and presumably still well-sealed) bottle for $1.50 (half off from $3.00) at an estate sale in a bottle that from the looks of it may be from the 1970s. Will let you know how it turns out if I end up drinking it.
The shelf life of Chloramphenicol when it is unopened is 24 months. The shelf life when it's opened is 28 days.
The shelf life of unopened petroleum jelly is around 3 years.
1-2 years. unopened of course.
3-6 months.
If opened 5/7 days refrigerated. Unopened 5 months
If it's in brine, possibly 2-3 years or more
According to the Gatorade website-9 months
Godiva chocolate liquor has a long shelf life if it is unopened and stored in a cool place. As long as the liquor does not develop a funny smell it is fine to drink.
An unopened bottle has an indefinite shelf life.
The shelf life of unopened Minwax wood stains typically ranges from 3 to 5 years, depending on storage conditions. To ensure the best quality, it's important to store them in a cool, dry place away from direct sunlight and extreme temperatures. Always check for any signs of separation or unusual odor before use, even if the product is within the shelf life.
They should last indefinitely if kept in a cool dark place.
Since it is a power, it should have comparatively long if unopened. There should be a "best by" date on the package. If not, contact the manufacturer.