Products

The products cover 5 types, including monomer (NVP), homogeneous polymer (PVP-K), heterogeneous polymer (PVP-VAc), polyvinylpolypyrrolidone and polymer complex (PVP-I). To assure the quality of products, we set up the quality assurance system focused on ISO9001 and was certified by the National Quality Certification Organization in 2002. Moreover, DMF/COS for Europe and FDA for United States are also under certification. By the effort of Nanhang, the quality of PVP-K, PVP-P and PVP-I have met the requirement of Chinese pharmacopeia (CP2000), US pharmacopeia (USP28) and European pharmacopeia (EP5.0).

NVP

Colorless liquor, melting point is 11 . insoluble in petroleum ether but soluble in water, alcohol, chlorofrom, benzene, ethyl acetate and carbon disulfide.

PVP-K Homopolymer Series

PVP exists as powder or aqueous solution. It can dissolve in water and variety of organic solvent .It is generally used in cosmetics , surfactants , pharmaceutical industry and other related industrial fields.

PVP-A Copolymer Series

Copolymer of different proportion of vinylpyrrlidone to vinyl acetate can be offered in powder or alcohol solution product. The aqueous product could be cloudy.

PVP-P Polyvinylpyrrolidone Crosslinked

PVP-P behaves as a white or creamy white powder with faint characteristic odor, which is highly hydrophilic and capable of complex with such substance as phenol, etc. It is completely insoluble with relatively high crosslink density and does not form gels that can impede disintegration, dissolution and drug release.

PQ-11

Quaternized copolymer of vinylpyrrolidone and dimethylaminoethyl methacrylate.PQ-11 is a high molecular weight product (average molecular weight ~ 1,000,000), supplied as a highly viscous, aqueous solution (20% solids).

PVP-I (PVP-IODINE)

PVP-Iodine 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. PVP-Iodine is the first selected iodine containing microbicide in developed country.

2-PYRROLIDONE

2-pyrrolidone is a colorless to slightly yellow liquid, with a faint amine odor. 2-P is a high-polar solvent and it is miscible with water and conventional organic  solvents.

N-ETHYLPYRROLIDONE

N-ethylpyrrolidone (NEP) is the lactam of 4-ethylaminobutyric acid and a very weak base. NEP is a chemically stable and powerful polar solvent. These characteristics are highly useful in a variety of chemical reactions where an inert medium is of concern. Despite the stability of NEP, it can also play an active role in certain reactions: hydrolysis, oxidation, condensation, conversion with chlorinating agents, polymerization and o-alkylation, and related reactions.

NEP

NEP

N-OCTYLPYRROLIDONE

Clear,light yellow  liqud

N-METHYLPYRROLIDONE(Electronic grade)

N-Methyl-2-pyrrolidone is a colorless to slightly yellow liquid, with a faint amine odor. NMP is miscible with water and conventional organic solvents.

N-METHYLPYRROLIDONE(Technology grade)

N-Methyl-2-pyrrolidone is a colorless to slightly yellow liquid, with a faint amine odor. NMP is miscible with water and conventional organic solvents.

N-HYDROXYETHY-LPYRROLIDONE

N-Hydroxyethylpyrrolidone(NHP) is a colorless-yellowish liquid with a weak amine odor.