Crab meat should remain fresh for three to five days after it is purchased (should be kept in the fridge).
As for unopened pasteurized crab meat being held in home refrigerators, it should be used within 60 days of the time it was purchased. Once the container has been opened, the product should be used within 5 days and must be kept refrigerated.
Freezing is a safe method for home preservation of crab meat, but should be used only when longer than recommended time is required between purchase and use.
Pontchartrainbluecrab.com suggests to store crab meat in home freezers at 10ºF or below for up to 3 months. If your freezer will not maintain 10ºF, then shorter shelf life will result.
Spoiled crab meat is sticky, has an ammonia odor and is yellowish in color.
Before you shop for crabs you might want to check this guide about these luscious crustaceans to discover their availability, distinct qualities and, of course, flavor shared by Tastingtable.com.