Sulfate of Potash in a inorganic salt comprised of pottasium, sulfur, and oxygen.
CAS number: 7778-80-5
Molecular Weight: 174.26
SOP is extracted from mixed salts that precipitate after the precipitation of halite from sea water.
Our crystalline SOP has, by mass, less than 1.5% moisture and less than 2.5% chloride.