русский 
Kreyòl Ayisyen
Gaeilgenah Éireann
Norsk
Srbija jezik (latinica)
bosanski
Português
Français
magyar
বাংলা
Polski
In the modern pharmaceutical, cosmetic, and food industries, polymer excipients play an indispensable role. They not only improve the solubility of drugs and active ingredients but also enhance the stability and processability of formulations. Polymers of different molecular weights and viscosities exhibit significant differences in tablets, capsules, creams, oral liquids, and other dosage forms. Therefore, selecting the appropriate polymer type is crucial for improving formulation quality, optimizing manufacturing processes, and ensuring the performance of the final product. With advances in research and manufacturing technology, high-quality polymer excipients have become a core resource for pharmaceutical companies and cosmetic brands to enhance product competitiveness.
Overview of PVP K30 and PVP K90
Polyvinylpyrrolidone (PVP) is a water-soluble polymer widely used in pharmaceuticals, cosmetics, food, and industrial applications. PVP is classified into different grades according to its molecular weight, among which K30 and K90 are the most commonly used in the pharmaceutical industry.
PVP K30: Lower molecular weight, fast dissolution, suitable for tablet binders, suspension stabilizers, and oral liquid formulations.
PVP K90: Higher molecular weight, higher viscosity, suitable for sustained-release formulations, capsule fillings, and formulations requiring high viscosity such as creams and suspensions.
Choosing the appropriate grade not only affects formulation performance but also directly impacts manufacturing efficiency, product stability, and patient experience.
Detailed Comparison Table of PVP K30 and K90
| Parameter | PVP K30 | PVP K90 | Application Advantage |
|---|---|---|---|
| Average Molecular Weight | 40,000–60,000 | 1,000,000–1,500,000 | K30 dissolves quickly due to low molecular weight; K90 provides viscosity and sustained-release effects |
| Viscosity (2% aqueous solution) | 2–5 mPa·s | 30–50 mPa·s | K30 is easy to process; K90 improves formulation stability |
| Appearance | White to slightly yellow powder | White powder | High purity ensures uniformity of drug content |
| Water Solubility | High | High, but slower than K30 | Can be chosen for rapid dissolution or delayed release based on needs |
| Typical Dosage | 1–5% | 2–10% | Flexible adjustment depending on formulation viscosity and performance |
| Main Applications | Tablet binders, oral liquids, suspensions | Sustained-release formulations, creams, capsule fillings | Match different dosage form requirements precisely |
Features of PVP K30
Rapid Dissolution
PVP K30's low molecular weight allows it to dissolve quickly in water, saving preparation time and improving production efficiency.
Broad Applicability
Suitable for tablets, oral liquids, and suspensions, particularly ideal for rapidly disintegrating tablets.
Chemical Stability
Compatible with a wide range of active pharmaceutical ingredients (APIs) and resistant to degradation or undesirable reactions.
Easy Processing
Good powder flowability ensures uniform mixing with excipients, suitable for automated production lines.
Cost Efficiency
Its quick dissolution and low usage in large-scale production help reduce formulation costs while increasing manufacturing efficiency.
Features of PVP K90
High Viscosity
High molecular weight provides higher solution viscosity, ideal for sustained-release and cream formulations, improving controlled drug release.
Enhanced Formulation Stability
In capsule fillings or suspensions, PVP K90 offers better homogeneity and physical stability.
Sustained Drug Release
Its high molecular weight allows for slower drug release, suitable for long-acting or controlled-release medications.
Excellent Film-Forming Properties
Can be used for tablet coating, forming a uniform, dense layer that improves taste, wear resistance, and appearance consistency.
Improved Formulation Performance
In creams, gels, and high-viscosity products, K90 enhances texture and user experience.
Advantages of Huzhou Sunflower Pharmaceutical Co., Ltd.
As a leading PVP manufacturer in China, Huzhou Sunflower Pharmaceutical Co., Ltd. has notable advantages in the research, production, and application support of K30 and K90:
International Standard Manufacturing
Products are produced strictly according to USP, EP, and JP standards, ensuring each batch meets international requirements for solubility, viscosity, heavy metals, and impurities.
Multi-Specification Product Supply
Offers various particle sizes, packaging options, and concentration specifications, catering to tablets, oral liquids, creams, and sustained-release formulations. Customers can select the most suitable grade and specification based on their formulation needs.
Advanced Production Technology
Equipped with fully automated production lines and modern testing facilities, ensuring batch-to-batch consistency while improving production efficiency and reducing manufacturing costs.
Professional Technical Support
Experienced technical teams provide formulation optimization, design consultation, and PVP application guidance, helping clients solve production challenges quickly.
Stable Supply Capability
Comprehensive logistics system and global supply network ensure timely delivery for both large-scale orders and small trial batches, maintaining smooth production schedules.
Continuous R&D Innovation
Ongoing investment in R&D optimizes production processes, improves PVP purity, solubility, and stability, meeting high-end formulation requirements.
Trusted by Long-Term Clients
Serving domestic and international pharmaceutical companies for years, with clients across Europe, America, Asia, and the Middle East, building strong industry credibility.
Comprehensive Customization Services
Can provide customized molecular weight, viscosity, and packaging solutions according to client requirements, enabling differentiated product development and optimized formulations.
Practical Applications of PVP K30 and K90
Tablet Manufacturing: K30 ensures uniform hardness and disintegration time, widely used in fast-disintegrating and multi-layer tablets.
Sustained-Release Capsules: K90 controls drug release rate and prolongs therapeutic effects, ideal for chronic disease medications.
Suspensions and Creams: K30 dissolves quickly in liquid formulations, K90 provides stability and uniformity in creams and high-viscosity products.
Coated Tablets: K90's film-forming ability improves tablet appearance, taste, and wear resistance.
Cosmetics and Personal Care: K30 in lightweight lotions and serums; K90 in creams, gels, and high-viscosity skincare products, enhancing user experience and product stability.
By scientifically selecting and applying K30 or K90, manufacturers can match formulation requirements precisely, improve product performance and production efficiency, and reduce the risk of formulation failure.
Frequently Asked Questions for Buyers
Can PVP K30 and K90 be used interchangeably?
It is not recommended. K30 is suitable for fast-dissolving, low-viscosity formulations, while K90 is used for high-viscosity, sustained-release, or cream formulations. Using the wrong grade may affect efficacy and product stability.
Does the company provide customized specifications?
Yes, different particle sizes, packaging, and solubility specifications can be customized to meet diverse application needs.
How to choose the right PVP grade?
Selection depends on formulation type, dissolution rate, and viscosity requirements. Technical teams can provide guidance and formulation optimization.
Do the products meet international standards?
Yes, Huzhou Sunflower products comply with USP, EP, and JP standards and come with full quality testing reports.
How stable are the products?
Both K30 and K90 exhibit high chemical stability, ensuring consistent formulations during storage and processing.
What about delivery times and logistics support?
The company has a global logistics network to ensure timely delivery for both large and small orders, supporting uninterrupted production.
Conclusion
PVP K30 and K90 each have unique advantages: K30 is ideal for fast-dissolving, low-viscosity formulations, while K90 is suited for high-viscosity, sustained-release, or film-forming formulations. Selecting the appropriate grade optimizes formulation performance and manufacturing efficiency. Huzhou Sunflower Pharmaceutical Co., Ltd. provides high-quality, multi-specification PVP products, supported by professional technical guidance and reliable supply, making it a key partner for pharmaceutical companies aiming to enhance product quality and market competitiveness. By applying K30 and K90 effectively, businesses can improve formulation consistency, reduce production risks, and meet the market demand for high-performance pharmaceutical products.