Inorganic mercury compounds or mercury salts, more commonly found in nature, include mercuric sulphide (HgS), mercuric oxide (HgO) and mercuric chloride (HgCl2). Most of these are white powders or crystals, except for mercuric sulphide which is red and turns black after exposure to light.
1. Salmon can be kept fresh in your refrigerator for up to two days. As soon as you bring your salmon home, unwrap it and wipe it down with a damp towel then wrap it in plastic wrap and place it in the coldest area of your refrigerator.This is typically the back of the bottom drawer in the refrigerator.. Salmon can be kept fresh in your freezer for up to eight weeks. When you bring home your fresh salmon take it out of the packaging, rinse it off using cold water and pat it dry. Cut your salmon into the desired portions and store it in freezer wrap, foil, freezer bags or an airtight freezer friendly container.
How long does cooked seafood last in the fridge? it lasts at least 1 day maybe 20 hours.   3-5 days if refrigerated shortly after cooking. Cooked bacon can last 3-4 days in the fridge as long as its wrapped  tight to prevent to much air and its put in the fridge within 2  hours of when it was cooked.