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PVP K15, PVP K17, PVP K25, PVP K30, PVP K90 exists in white powder or aqueous solution. PVP readily dissolves in water, alcohol, amine and halohydrocarbon, but is not dissolved in acetone and aether etc.. It has good solubility, biocompatibility, and physiologically inert, film-forming character, colloid protect ability and compound ability to many organic or inorganic compounds. It is also steady to acid, salt and heat, so it is widely used.
Povidone Iodine, PVP Iodine, PVP I (CAS 25655-41-8) is a stable chemical complex of polyvinylpyrrolidone (PVP) and elemental iodine, which is completely soluble in water, ethanol etc. PVP-Iodine can extinguish bacterial, virus, fungus effectively. It is a stable complex with no irritation, which can dissolve in water completely.
Crospovidone PVPP CAS 25249-54-1 is white or creamy white powder with faint characteristic odor, which is easily hydrophilic and capable of complex with such substance as phenol, etc. PVPP is widely used as disintegrating agent and bulking agent of troche, pelletized granule and capsule in pharmaceutical area.
Iodine is a chemical element with symbol I and atomic number 53. Under standard conditions, iodine is a bluish-black solid with a metallic lustre, appearing to sublimate into a noxious violet-pink gas, the color due to absorption of visible light by electronic transitions between the highest occupied and lowest unoccupied molecular orbitals. Melting point is at 113.7 °C (236.7 °F).
PVP K30 Powder CAS 9003-39-8 is a hygroscopic polymer,exists in white or creamy white powder, with molecular weight ranging from 45000 to 58000.It's easily soluble in water and many other organic solvents,with excellent hygroscopisty,film-forming,adhesive,chemical stability and toxicological safeness characters.
PVP K15 powder & K17 has similar molecular weight and K value, but they are different in usage effect and quality. PVP K15 can not be replaced by PVP K17 definitely in application of pharmaceutical and cosmetics. If you want to buy real PVP K15 powder and know more about PVP, TNJ Chemical is your best choice!
PVP K17 is white crystalline powder. It is soluble in water, alcohol, amine and halohydrocarbon, but is not dissolved in acetone and aether etc.. It has good solubility, biocompatibility, and physiologically inert, film-forming character, colloid protect ability and compound ability to many organic or inorganic compounds.
PVP K90 powder has two obvious characters: high viscosity and high hygroscopicity. This two characters make PVP K90 powder an excellent materials for cosmetics. PVP K90 powder exists in white powder or aqueous solution.