Polyvinylpyrrolidone (PVP) K-90 | CAS 9003-39-8 | Cosmetic-Grade Thickening Agent & Stabilizer
Product Overview
Polyvinylpyrrolidone (PVP), also known as Povidone, is a high-purity, water-soluble synthetic polymer celebrated for its exceptional versatility and performance. Designated as CAS 9003-39-8, HERSONCARE's PVP K-90 is a premier Cosmetic Raw Material that acts as a powerful Thickening Agent, film-former, and stabilizer. Its non-ionic nature ensures excellent compatibility with a wide range of other ingredients without requiring neutralization.
PVP K-90 forms crystal-clear solutions in water across all concentrations and is renowned for its outstanding ability to stabilize suspensions, emulsions, and dispersions. The films it forms are highly hygroscopic, providing exceptional moisturizing and conditioning benefits. This makes it an indispensable ingredient in advanced cosmetic, pharmaceutical, and industrial formulations, where quality, consistency, and performance are paramount. As a trusted supplier of premium ingredients like Sodium Hyaluronate and Moisturizing Agent, HERSONCARE guarantees a product that meets the highest standards of purity and efficacy.
Technical Specifications
Our PVP K-90 is manufactured under strict quality control protocols to ensure batch-to-batch consistency and reliability. Key specifications include:
- Model No.: HFN-024
- Brand: HERSONCARE
- Place of Origin: China
- INCI/CTFA Name: Polyvinylpyrrolidone
- CAS No.: 9003-39-8
- Appearance: White or off-white, free-flowing powder.
- Odor: Slight characteristic odor.
- K-value: 88.0 - 96.0 (indicating high molecular weight).
- Nitrogen Content: 11.5% - 12.8%.
- Active Matter: ≥ 95.0%.
- pH (5% in water): 5.0 - 9.0.
- Loss on Drying: ≤ 5.0%.
- Viscosity (20% aqueous solution): 10,000 - 30,000 mPa.s (Brookfield, RVT, 23°C, Spindle #7, 100rpm).
- Residue on Ignition: ≤ 0.05%.
- Heavy Metals (as Pb): ≤ 10 ppm.
- Arsenic (As): ≤ 2 ppm.
- Vinylpyrrolidone Monomer: ≤ 0.01%.
Product Features & Advantages
HERSONCARE's PVP K-90 stands out in the market due to its superior quality and multifaceted functionality:
- Superior Thickening & Rheology Control: Efficiently increases viscosity and modifies the flow properties of aqueous solutions, creating rich, luxurious textures in personal care products.
- Excellent Stabilizing Action: Effectively stabilizes suspensions, emulsions, and dispersions, preventing ingredient separation and ensuring product homogeneity throughout its shelf life.
- Clear Film Formation: Forms hard, transparent, and oxygen-permeable films that are highly resistant to oils and greases. This is ideal for hair sprays, mascara, and protective coatings.
- Exceptional Moisture Binding: Acts as a powerful Moisturizing Agent due to its hygroscopic nature, helping to retain moisture on the skin and hair, enhancing hydration and feel.
- Broad Compatibility: Its non-ionic character grants excellent compatibility with a vast array of surfactants, resins, and other Cosmetic Raw Materials, simplifying formulation challenges.
- High Purity & Safety: Low residual monomer content and stringent limits on heavy metals and arsenic make it safe for use in sensitive applications.
How to Use Polyvinylpyrrolidone (PVP)
To achieve optimal performance, follow these recommended steps for incorporation:
- Dispersion: Slowly sift the PVP powder into the vortex of water at room temperature under constant, vigorous agitation. Pre-mixing with other powdered ingredients can aid dispersion.
- Hydration: Continue stirring until the solution becomes completely clear and viscous. The dissolution process is physical and does not require heat, though it may speed up the process slightly.
- Formulation: Once a fully hydrated stock solution is prepared, it can be added to the main batch of your formulation at any stage, ensuring uniform mixing.
- pH Adjustment: The solution is stable across a wide pH range. Adjust the pH of the final product after PVP is fully dissolved and incorporated.
Typical Use Level: 0.5% - 5.0%, depending on the desired viscosity and application.
Application Scenarios
HERSONCARE PVP K-90 is a critical component in a diverse range of industries:
- Cosmetics & Personal Care:
- Hair Care: Essential in hair sprays, mousses, and gels for its strong holding and film-forming properties. In shampoos and conditioners, it adds body and improves manageability.
- Skin Care: Used in creams, lotions, and masks as a stabilizer, thickener, and Moisturizing Agent, often paired with hydrating agents like Sodium Hyaluronate.
- Makeup: Provides suspension stability in mascara, liquid eyeliners, and foundations. Imparts a smooth application and prevents smudging.
- Pharmaceuticals: Used as a binder in tablet formulations, a viscosity enhancer in topical gels and ointments, and a stabilizer in liquid suspensions.
- Industrial Applications: Employed as a dispersing agent in pigments and dyes, a thickening agent in adhesives, and a protective coating for seeds.
Benefits for Customers
- Enhanced Product Performance: Formulate superior products with improved texture, stability, and user experience.
- Formulation Flexibility: Its compatibility simplifies R&D and allows for creative formulation across a wide product range.
- Consumer Appeal: Create products with desirable sensory attributes (non-tacky, clear, smooth) that meet market demands.
- Supply Chain Reliability: HERSONCARE ensures consistent quality and reliable supply, minimizing production disruptions.
Certifications and Compliance
HERSONCARE is committed to quality and safety. Our PVP K-90 is produced in facilities certified to the highest international standards:
- FSSC22000 (Food Safety System Certification)
- ISO9001 (Quality Management System)
- Kosher Certification
- Halal Certification
This ensures our products are manufactured under the strictest hygiene and quality control protocols, providing you with complete confidence.
Customization Options
We understand that one size does not fit all. HERSONCARE offers flexible solutions to meet your specific needs:
- Grade Selection: We supply various K-value grades (K15, K30, K60, K90) to match your specific viscosity requirements.
- Packaging: Standard packaging is 25kg/drum. We can offer custom packaging solutions (e.g., smaller bags, palletization) to suit your handling and storage requirements.
Minimum Order Quantity (MOQ): 20 Kilograms.
Production Process & Quality Control
Our PVP is synthesized through a controlled polymerization process of monomeric N-Vinylpyrrolidone:
- Purification: High-purity raw materials are meticulously purified.
- Polymerization: A precise catalytic polymerization reaction is conducted under controlled conditions of temperature and pressure.
- Precipitation & Washing: The polymer is precipitated, thoroughly washed, and purified to remove any unreacted monomer and impurities.
- Drying & Milling: The purified PVP is dried and milled to achieve the desired particle size and ensure a free-flowing powder.
- Quality Assurance: Every batch undergoes rigorous in-house testing against all specified parameters (K-value, viscosity, pH, residual monomer, heavy metals) before release.
Packaging & Shelf Life
Packaging: 25 kg per drum, ensuring product integrity during transportation and storage.
Shelf Life: 24 months when stored in a cool, dry, and well-ventilated place in its original, sealed container at room temperature.
Frequently Asked Questions (FAQ)
- Q: What is the difference between PVP K-30 and PVP K-90?
A: The K-value indicates the molecular weight. K-90 has a higher molecular weight than K-30, resulting in significantly higher viscosity solutions at the same concentration. K-90 is preferred for strong film-forming applications (hairsprays), while K-30 is often used for crystallization inhibition or as a binder.
- Q: Is HERSONCARE PVP suitable for natural or organic certified products?
A: PVP is a synthetic polymer. While it is a safe and highly effective ingredient, it is not typically permitted in certifications like COSMOS Natural or Organic. Please check the specific standards of your certifying body.
- Q: What are your payment and shipping terms?
A: We accept T/T (Bank Transfer) and support various Incoterms including FOB, CIF, DDU, DDP, and Express Delivery. We ship globally via Ocean, Air, and Express carriers from ports in Shanghai, Qingdao, or Xi'an.
- Q: Can you provide technical support for formulation?
A: Yes, our technical team can provide basic guidance on incorporating PVP into your formulations. Please contact us with your specific inquiry.
- Q: How do I request a sample?
A: Please contact our sales team with your company details and intended application. We are happy to provide sample quantities for evaluation.
