As a professional PVP (Polyvinylpyrrolidone) supplier, we have been in PVP industry for more than 15 years. Today we would like to talk about PVP-K molecular weight. This is a very simple question but many customers get confused when use it. PVP K molecular weight is very important in pharmaceutical comsetic and other application.

The molecular weight of PVP-K as follows (approx.)

PVP K15:      8,000

PVP K17:     10,000 

PVP K120:   3,000,000

The K value of PVP is actually related to the relative viscosity of PVP aqueous solution, and the viscosity is related to the molecular weight of the polymer, so it can be used to characterize the average molecular weight of PVP by K value. The larger the value of K, the greater the viscosity, the stronger the adhesive property.

PVP is a synthetic water-soluble polymer compound, has the general properties of water soluble polymer, colloid protection, film, adhesion, wettability, solubility or aggregation, but the most characteristic is its excellent solubility and biocompatibility. In the synthesis of polymer like PVP is soluble in water, but soluble in most organic solvents, low toxicity, good physiological compatibility is rare, especially in medicine, food, cosmetics, which is closely related to people's health in the field. With the price of the raw material butyrolactone getting lower and lowder, PVP will show a good the prospect of its development.

We have wide range of PVP products, such as PVP K30,K15,K17,K25,K90, also we have comsmetic PVP K30, Pharma grade PVP K17 K15 etc. If you need to buy PVP K30 and K15 K17 K25 K60 K90 K120, please feel free to contact us info@chinatnj.com