Sodium sulfate that has been micronized has a variety of uses in polymers, but it is mostly employed as an extender or filler.

• Plastics can be strengthened by micronized sodium sulfate by enhancing their mechanical characteristics, such as modulus, tensile strength, and impact resistance. It can improve the plastic's structural integrity by filling gaps without greatly adding to its weight.

• When compared to many other fillers and additives used in plastics, sodium sulfate is very cheap. Manufacturers of plastic formulations can lower material prices without sacrificing acceptable performance attributes by adding micronized sodium sulfate.

• The density of plastic products can be adjusted with the addition of sodium sulfate that has been micronized. This is especially helpful for applications like automobile parts or packaging materials where it's preferable to save weight.