Vinylpyrrolidone Homopolymer

Hangzhou Rainbow Import & Export Co., Ltd. is one of the leading manufacturers and suppliers of vinylpyrrolidone homopolymer in China. With abundant experience, we warmly welcome you to buy customized vinylpyrrolidone homopolymer from our factory. If you have any enquiry about free sample, please feel free to email us.

Vinylpyrrolidone homopolymer is a water-soluble polymer formed by free radical polymerization of N-vinylpyrrolidone (NVP) monomer. Its chemical name is polyvinylpyrrolidone (PVP) for short.

This product is a water-soluble synthetic polymer compound, a linear homopolymer of N-vinylpyrrolidone, with a molecular formula of (C₆H₉NO)n, where n represents the average number of N-vinylpyrrolidone chains. The most commonly used excipient is povidone K30, with an average viscosity-average molecular weight of 3.8×104; followed by povidone K15, K25, and K90, with average viscosity-average molecular weights of 0.77×104, 2.5×104, and 63×104, respectively.

1. Pharmaceutical industry

Drug carrier: used as a binder and sustained-release agent for tablets and capsules to improve drug solubility and stability.

Complexing agent for povidone iodine (for disinfection): forms a complex with iodine (such as povidone iodine, CAS 25655-41-8) for skin disinfection.

2. Cosmetics and daily chemicals

Thickener and film former: used in shampoo, lotion and other products to increase viscosity and skin feel.

3. Industry and scientific research

Dispersant: used as a stabilizer in the preparation of nanomaterials (such as gold nanoparticles, TiO₂ films).

Food industry: used as a clarifier for beer and wine

Product characteristics

This product is a white to milky white amorphous powder, odorless or slightly odorous; tasteless; hygroscopic, soluble in water, ethanol, isopropanol, glycerol or chloroform, insoluble in acetone, ether and hydrocarbon solvents.

●This product can complex with many substances, especially compounds containing active hydrogen atoms or metal carbonyl compounds, to form solid complexes, which cause significant but reversible changes in the properties of the complexes such as solubility, volatility, stability, toxicity and irritation. When used as an excipient, it can be used to develop many dosage forms with new functions or improve the performance of the original dosage form.

●This product is stable under normal conditions and has strong tolerance to heat, acid and alkali.

Q: What are the specifications of your Vinylpyrrolidone homopolymer?

A: We offer a variety of specifications of products, the most common of which are types with different average molecular weights, such as low molecular weight, medium molecular weight and high molecular weight products suitable for different application scenarios. For example, polyvidone K30, which is commonly used in the pharmaceutical field, also has corresponding vinylpyrrolidone homopolymer specifications to meet your diverse needs.

Q: What is the CAS number of the product and what quality standards does it meet?

A: The CAS number of our Vinylpyrrolidone homopolymer is 9003-39-8. In terms of quality, we strictly follow a number of authoritative standards at home and abroad, such as the Chinese Pharmacopoeia standard, the United States Pharmacopoeia (USP) standard, the European Pharmacopoeia (EP) standard, etc., to ensure stable and reliable product quality.

Q: What role can the product play in pharmaceutical preparations?

A: In pharmaceutical preparations, it is an excellent adhesive, dispersant and solubilizer. As a binder, it can make drug powders better shaped; as a dispersant, it can make drugs more evenly distributed in the solution; as a solubilizer, it can increase the solubility of some poorly soluble drugs and improve the efficacy of drugs.

Q: Will it be irritating to the skin when used in cosmetics?

A: Our products have good biocompatibility and have undergone multiple safety tests. Within the normal use range, the irritation to the skin is extremely small, even negligible. Many well-known cosmetic brands are using our products as film formers, moisturizers, etc. to improve the texture and use effect of the products.

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