Shandong Huashang Chemical Co., Ltd. is a high-tech enterprise focused on industry of fine chemicals research and develop, produce and sale. Shandong Huashang Chemical Co., Ltd. is located in Shan Dong Ji Nan China. we have the ability to provide you high quality products. More than 90 % of our products are exported to developed countries and regions such as north America, Europe, Japan, South Korea and the Middle East.
Polyvinylpyrrolidone
1. Basic Product Information
Product Name: Polyvinylpyrrolidone
CAS Number: 9003-39-8
Molecular Formula: (C6H9NO)n
Molecular Weight: Variable, depends on molecular weight grade (K12, K15, K30, K60, K90)
Synonyms: PVP, Povidone, 1-Ethenylpyrrolidin-2-one homopolymer
Product Category: Water-soluble polymer, pharmaceutical excipient, cosmetic thickener & film-forming agent, food additive, industrial adhesive auxiliary
2. Physical and Chemical Properties
Physical Indicators
- Appearance: White to off-white amorphous powder
- Odor: Odorless
- Solubility: Freely soluble in water, methanol, ethanol, glycerol; insoluble in aliphatic hydrocarbons, esters and mineral oils
- Glass Transition Temperature: ~150–170 °C
- Density (20 °C): 1.23–1.29 g/cm3
- Hygroscopicity: Strongly hygroscopic under high humidity air
- Aqueous Stability: Stable in neutral, weakly acidic and weakly alkaline aqueous solutions; no hydrolysis under room temperature
Chemical Characteristics
- Molecular Structure: Linear polymer formed by vinylpyrrolidone monomer polymerization, repeating unit C6H9NO
- Core Functional Mechanism: Amphiphilic polymer with strong complexing, film-forming, thickening and dispersing capacity; binds polyphenols, tannins and active ingredients; improves powder compressibility in tablets
- Photostability: Slightly light-sensitive; long-term UV exposure causes slight yellowing of aqueous solution
- Thermal Stability: Stable below 120 °C; above 150 °C slow thermal decomposition releases pyrrolidone volatile fumes
- Chemical Compatibility: Compatible with most pharmaceutical APIs, surfactants and food excipients; incompatible with strong oxidants and concentrated strong alkalis under high temperature
3. Main Application Fields
- Core Application: Pharmaceutical Excipient
Binder, disintegrant and solubilizer for oral tablets, granules, oral solutions; complexing agent to mask bitter taste of drugs - Cosmetic Raw Material
Film-forming agent, hair styling fixative, thickener and dispersant for hair gel, facial mask, hair spray and mascara - Food & Beverage Additive
Clarifying agent for wine, beer and fruit juice to remove tannins and polyphenols - Industrial Auxiliary
Dispersant for pigment, ink and ceramic slurry; adhesive auxiliary for textile printing - Biochemical Reagent
Protein stabilizer and solubilizer for biological sample preparation
4. Platform Category & Product Guidance
1) Domestic B2B Platform Category
Recommended Path: Polymer Materials / Pharmaceutical Excipients
Reason: Multi-purpose water-soluble polymer applied in pharmacy, food, daily chemical and industrial fields
2) English Product Group Dropdown Options
Recommended Selection: Basic Organic Chemicals
Do NOT classify solely as pharmaceutical chemicals; it is universal food & pharmaceutical grade polymer excipient
3. Standard Foreign Trade Packaging Specification
1kg aluminum foil vacuum bag for lab test batches; 25kg double PE-lined fiber drum for bulk industrial orders
5. Quality Specification Table
| Test Item | Standard Requirement |
| CAS Number | 9003-39-8 |
| Repeating Unit Formula | C6H9NO |
| Appearance | Uniform white powder without grey/yellow impurities |
| K-value (viscosity grade) | K12/K15/K30/K60/K90 as customer requirement |
| Water Content (KF Method) | ≤5.0% |
| Heavy Metals (Pb) | ≤10 ppm |
| Ash Content | ≤0.05% |
| pH (5% aqueous solution) | 3.0–7.0 |
| Standard Storage Package | Airtight moisture-proof aluminum foil bag, dry warehouse storage |
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