Hangzhou Rainbow Import & Export Co., Ltd. is one of the leading manufacturers and suppliers of polyvinylpyrrolidone k25 in China. With abundant experience, we warmly welcome you to buy customized polyvinylpyrrolidone k25 from our factory. If you have any enquiry about free sample, please feel free to email us.

Polyvinylpyrrolidone K25 is a water‑soluble polymer excipient with good film‑forming, solubilizing and complexing properties. It dissolves readily in water and certain polar organic solvents and delivers moderate solution viscosity. Widely applied in pharmaceutical and cosmetic industries as binder, dispersant and film‑former, it improves formulation stability and reduces precipitation risk. It shows good compatibility with most common raw materials with controllable impurities, suitable for preparation, skin care and hair‑care product formulation.

Polyvinylpyrrolidone K25

High Purity Polyvinylpyrrolidone K25 Features

Consistent K-Value Control
Manufactured with precise polymerization control to maintain a stable K-value range, ensuring reliable molecular weight distribution and batch-to-batch consistency.
Low Residual Impurities
Strict purification processes help control residual monomers, peroxides, aldehydes, and other trace impurities to meet high-quality requirements.
Reliable Moisture Management
PVP K25 has hygroscopic characteristics, allowing it to interact effectively with water molecules while maintaining powder stability during storage and handling.
Uniform Powder Characteristics
Produced as a free-flowing white to off-white powder with consistent particle properties, facilitating accurate weighing and processing.
Controlled Viscosity Performance
Provides predictable viscosity behavior in aqueous systems, making it suitable for formulations requiring precise rheological control.

Why Choose Rainbow as Your Polyvinylpyrrolidone K25 Manufacturer

In‑house production workflow covers raw material screening through finished‑product delivery, cutting intermediate links and delivering stable lead‑time for both trial orders and bulk commercial shipments.
On‑site application engineers offer practical formulation support, assisting with dissolution tests and compatibility checks to resolve real‑world production hurdles.
Flexible packaging options are available from lab‑scale small packages to industrial drums, matching different stages of customer R&D and mass manufacturing.
Strict incoming‑material and in‑process testing protocols reduce unexpected quality fluctuations, avoiding production downtime caused by unstable incoming materials.
Experienced export team handles global shipping documentation and logistics coordination, simplifying cross‑border procurement procedures for overseas buyers.
Custom‑oriented technical communication is accessible; we adjust sampling quantities and test requirements to fit your project development timeline.

Polyvinylpyrrolidone K25 Manufacturer

FAQ

1. What is the recommended storage condition for Polyvinylpyrrolidone K25?
PVP K25 should be stored in a dry, well-ventilated area away from direct sunlight and excessive humidity. The product is hygroscopic, so sealed packaging is recommended to prevent moisture absorption during storage.

2. What quality parameters are commonly tested for PVP K25 before shipment?
Typical quality inspections include K-value, identification, moisture content, pH value, residue on ignition, residual N-vinylpyrrolidone, peroxide content, and heavy metal limits to ensure product consistency and compliance.

3. What is the difference between PVP K25 and other PVP grades?
The main difference is the molecular weight and viscosity characteristics represented by the K-value. PVP K25 offers a balanced molecular size, providing moderate viscosity and good processability compared with lower or higher K-value grades.

4. What packaging options are available for Polyvinylpyrrolidone K25?
PVP K25 is commonly supplied in moisture-resistant packaging such as multi-layer paper bags with inner PE liners or customized packaging according to transportation requirements and customer specifications.

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