Polyethylene Sulfate Potassium (PVSK for short) is a compound with the chemical name Potassium Polyvinyl Sulfate. It is a salt polymer formed by the combination of polyethylene and potassium sulfate. Its scientific name is Polyvinylsulfuric acid potassium salt, which can also be written as Poly Vinyl Sulfate, Potassium Salt or Potassium Poly (vinylsulfate). 

In its structure, potassium sulfate is the main component, which is connected with polyethylene monomer through esterification reaction to form a special polymer material.

In the field of chemistry, PVSK is defined as a polymer potassium salt of sulfuric acid monoester, and its characteristics make it play an important role in many industrial applications. It is commonly found in soil conditioners, textile dyes, papermaking industry, water treatment agents and building materials, and is highly favored for its good viscosity and water retention. In soil treatment, it can improve soil structure and increase fertility; in the textile field, it is used as a dye to give fabrics a unique color and washability; in the process of papermaking and water treatment, it can effectively improve paper quality and sewage treatment efficiency as an auxiliary agent.

In short, poly(potassium sulfate) is a multifunctional polymer potassium salt. Its unique chemical structure gives it a wide range of industrial uses and makes it an indispensable chemical in modern industry.