PVP K25 sits just below K30 in molecular weight and viscosity, offering a lighter-bodied alternative for formulations where slightly lower viscosity is preferred while retaining the binding and solubilizing behavior of the mid-range povidone grades.
Product · PVP K-Series
PVP K25 (Povidone K25) — Mid-Range Binder & Formulation Aid
CAS: 9003-39-8Grade: K25
Technical Specifications
| K-value (Fikentscher) | 22.5 – 27.0 |
|---|---|
| pH (1% aqueous solution) | 3.0 – 5.0 |
| Moisture content | ≤ 5.0% |
| Molecular weight | ≈ 24,000 – 35,000 Da |
| Peroxide (as H₂O₂) | ≤ 400 ppm |
| CAS Number | 9003-39-8 |
K-value (Fikentscher)
22.5 – 27.0
pH (1% aqueous solution)
3.0 – 5.0
Moisture content
≤ 5.0%
Molecular weight
≈ 24,000 – 35,000 Da
Peroxide (as H₂O₂)
≤ 400 ppm
CAS Number
9003-39-8
Key Applications
Tablet & Capsule Binder
Improves powder cohesion during wet granulation; lower viscosity than K30 preferred for higher-solids processing.
Oral Suspension Stabilizer & Solubilizer
Stabilizes oral suspensions and improves apparent solubility of poorly soluble actives in solid dispersions.
Frequently Asked Questions
How does PVP K25 differ from PVP K30?
Both are mid-range povidone grades used primarily as tablet binders. K25 has a slightly lower K-value and molecular weight than K30, resulting in lower viscosity at equivalent concentration. Many formulators treat the two as close substitutes; the choice often comes down to processing preference and specific formulation testing.
Which pharmacopoeia standards does PVP K25 comply with?
Manufactured to comply with USP/NF, EP, JP, and BP monograph requirements, with batch documentation available for regulatory filings.
Do you provide certificates of analysis for each batch?
Yes, a batch-specific COA is provided with every shipment, along with ISO9001/ISO14001 certification and DMF/CEP references where applicable.