Polyvinylpyrrolidone (PVP K90), CAS 9003-39-8, is a water-soluble, film-forming vinyl polymer supplied here in technical grade. The K90 grade is a high-molecular-weight type (K-value 87.4-94.2) used where a strong binder, film former or thickener is needed – in adhesives, coatings, electronics, ceramics, detergents and personal care. PolyBlueChem supplies PVP K90 (technical grade) to the specification below with per-batch COA and SDS.
Specifications (Technical Grade)
| Parameter | Specification |
|---|---|
| Appearance | White or yellowish-white hygroscopic powder |
| Identification | A, B, C, D |
| pH | 4.0 – 9.0 |
| Appearance of solution | Clear solution |
| K-Value | 87.4 – 94.2 (nominal K90) |
| Vinylpyrrolidone (NVP) residual monomer | 0.1% max |
| Water | 5.0% max |
| Residue on ignition | 0.1% max |
| Nitrogen content | 11.5 – 12.8% |
The K-value characterises molecular weight (and therefore viscosity and binding strength) – higher K means higher molecular weight; K90 is a high-viscosity grade. The NVP limit (0.1% max) controls residual monomer, and the nitrogen content range confirms the polymer composition. A full specification sheet and a certificate of analysis (COA) for each batch are available on request.
Basic Information
| CAS number | 9003-39-8 |
| Synonyms | Polyvinylpyrrolidone; PVP; povidone; polyvidone; 1-vinyl-2-pyrrolidinone homopolymer |
| Molecular formula | (C6H9NO)n |
| Monomer | N-vinylpyrrolidone (NVP), CAS 88-12-0 |
| Grade | K90, technical grade |
| Appearance | White to yellowish-white hygroscopic powder |
| Solubility | Readily soluble in water and in many polar solvents |
Applications
- Adhesives and binders – film-forming binder in glues, remoistenable and hot-melt adhesives, and as a viscosity builder.
- Coatings and inks – pigment dispersion, film former and rheology modifier in water-based systems.
- Electronics – binder and dispersant in photoresists, conductive pastes and capacitor/electrode formulations.
- Ceramics and refractory – green binder that burns out cleanly before sintering.
- Detergents and cleaning – dye-transfer inhibitor, thickener and soil-release aid.
- Personal care – film former and fixative in hair and styling products.
- Textile and paper – sizing, coating and finishing aid.
Packaging and documentation
- 25 kg PP/PE bags or fibre drums; sealed, cool, dry storage (the powder is hygroscopic).
- Per-batch certificate of analysis (COA) and safety data sheet (SDS).
- Store sealed and dry away from moisture and heat; the powder absorbs water from the air.
PolyBlueChem supplies PVP K90 (polyvinylpyrrolidone, CAS 9003-39-8, technical grade) to this specification, with per-batch COA and SDS and FOB/CIF delivery. Contact us with your tonnage, the grade and the application for a quotation.
