TCS Industries Limited (China-sourced API supplier) supplies Povidone K30 -– Versatile Binder & Solubilizer for Solid and Liquid Dosage Forms CAS 84057-81-8 for pharmaceutical B2B procurement — COA, MSDS, and technical documentation available on request.
> Overview
| Product Name | Povidone K30 -– Versatile Binder & Solubilizer for Solid and Liquid Dosage Forms |
|---|---|
| Structural Formula |  |
| CAS Number | 84057-81-8 |
| Molecular Formula | (C6H9NO)n |
| Molecular Weight | ~40,000 g/mol (K-value 27–33) |
| InChIKey | Not applicable (polydisperse polymer) |
| SMILES | Available on request where applicable |
| Appearance | White to yellowish hygroscopic powder |
| Purity / Grade | By agreed specification and batch COA |
| Storage | Keep tightly closed in a cool, dry, well-ventilated place |
Povidone K30 (CAS 84057-81-8) is a water-soluble synthetic polymer of N-vinyl-2-pyrrolidone with a K-value of 26–35 (corresponding to average MW ~40,000–54,000). Povidone (polyvinylpyrrolidone, PVP) is used as a pharmaceutical binder, film former, suspending agent, solubilizer, and crystallization inhibitor. K30 is the standard grade for wet granulation binding.
TCS Industries Limited, a Hong Kong-based trading and sourcing company, supplies Povidone K30 in pharmaceutical (USP-NF/Ph.Eur.) grade for global procurement programs.
> Applications
Wet granulation binder
Povidone K30 is used at 2–5% in wet granulation as a binder solution (5–15% in water or hydroalcoholic solvent). It provides strong inter-particle binding during granulation and drying, producing granules with good flow and compressibility. K30 is preferred over K25 (lower binding strength) and K90 (excessively viscous solutions). Iveson et al. (Powder Technol, 2001, 117:83–97) studied the relationship between binder solution viscosity and granule growth kinetics in high-shear wet granulation.
Solubilizer and crystallization inhibitor
Povidone inhibits recrystallization of amorphous drug in solid dispersions and supersaturated solutions. In ophthalmic solutions, PVP K25-K30 (0.5–2.0%) serves as a demulcent and viscosity modifier. It also functions as a complexing agent, forming soluble complexes with iodine (PVP-iodine, povidone-iodine) for antiseptic applications.
> Sourcing & Supply
TCS Industries Limited supports development, qualification and commercial purchasing discussions for Povidone K30 -– Versatile Binder & Solubilizer for Solid and Liquid Dosage Forms with buyers in South America, Europe, the United Kingdom, Australia, New Zealand, Mexico and Canada.
- Evaluation and commercial quantities: 5 kg samples for formulation trials; 25 kg drums for production. K-values 12, 17, 25, 30, 90 in pharmaceutical grade available. K30 is the standard grade.
- Pallet quantities and production campaigns: repeat supply is coordinated against packaging, lead time, annual demand and destination-market import requirements.
> Quality & Documentation
Key specification parameters include K-value (26–35), nitrogen content (11.5–12.8%), pH (3.0–7.0 in 5% solution), water content (≤5.0%), residue on ignition (≤0.1%), heavy metals (Pb ≤10 ppm), vinyl pyrrolidone monomer (≤0.001%), formic acid, acetaldehyde, peroxide, and microbial limits. White to yellowish powder. Meets USP-NF, Ph.Eur. (Povidonum), and JP. COA and MSDS are standard.
> Packaging
Povidone K30 is a white to yellowish hygroscopic powder. Standard packaging includes 25 kg fibre drums with double PE liner. Store at room temperature (15–25 °C) in dry conditions in tightly sealed containers. Shelf life is typically 24 months. Labels and documents are checked before dispatch.
> Pricing & MOQ
Pricing is quoted by specification, packaging and destination. Common commercial discussions use 25 kg bag/drum formats, pallet quantities and production-campaign planning; smaller samples may be reviewed for qualified formulation teams.
> Regulatory & Compounding Context
Povidone is monographed in USP-NF (Povidone), Ph.Eur. (Povidonum), BP, and JP. Listed in the FDA IID for oral, topical, ophthalmic, and parenteral dosage forms. Approved as a food additive in the EU (E1201, clarifying agent). GRAS in the US for specific food uses. No special import permits.
> Alias Index
- Chemical class: Poly(N-vinyl-2-pyrrolidone)
- CAS Number: 84057-81-8 (K30 grade); 9003-39-8 (generic PVP)
- INN: Povidone
- EU additive: E1201
- Pharmacopoeial name: Povidonum (Ph.Eur.)
- K-value system: K12 (~2500), K17 (~10000), K25 (~25000), K30 (~50000), K90 (~1200000)
- Brand equivalents: Kollidon 30 (BASF), Plasdone K-29/32 (ISP/Ashland)
- Commercial request terms: povidone K30 USP, PVP K30, Kollidon 30 equivalent, wet granulation binder, TCS Industries Limited
> FAQ
What K-value should I use?
K30 (MW ~50,000) is standard for wet granulation binding. K25 provides lower viscosity solutions for spray coating. K90 (MW ~1,200,000) is used for controlled-release matrices and sustained-release films. K12 and K17 are used in solubilization and complexation. Specify K-value based on intended function.
What documents are available for Povidone K30 -– Versatile Binder & Solubilizer for Solid and Liquid Dosage Forms orders?
COA and MSDS are standard for commercial discussions. COO, packing list, invoice and other import-support documents can be arranged according to order scope.
Can TCS Industries Limited support Povidone K30 -– Versatile Binder & Solubilizer for Solid and Liquid Dosage Forms supply to South America?
Yes. We support B2B buyers in Argentina, Colombia, Chile, Peru, Ecuador, Uruguay, Bolivia, Brazil, Paraguay, Venezuela, Guyana and Suriname, subject to route and document review.
Do you support Europe, the United Kingdom, Australia, New Zealand, Mexico and Canada?
Yes. These destinations can be reviewed for project supply, import documents, packaging and logistics planning before quotation.
What does K-value mean?
K-value is a viscosity-based measure of polymer molecular weight, calculated from the Fikentscher equation using relative viscosity of a 1% aqueous solution at 25 °C. Higher K-value = higher MW = higher solution viscosity. K30 has K-value 26–35 and MW approximately 40,000–54,000 Da.
Is Povidone the same as Povidone-Iodine?
No. Povidone is the polymer alone (PVP). Povidone-iodine (PVP-I) is a complex of povidone with iodine, containing 9–12% available iodine. PVP-I is an antiseptic (Betadine). They are different products with different pharmacopoeial monographs, specifications, and applications.
Can you arrange samples before commercial purchasing?
Samples or evaluation quantities may be reviewed for qualified buyers after target specification, application and destination-market requirements are clarified.
How is Povidone K30 -– Versatile Binder & Solubilizer for Solid and Liquid Dosage Forms packaged for export?
Packaging is confirmed by quantity and material properties. Typical options include foil bags, HDPE containers, fibre drums, 25 kg bags or palletized export packaging.
Can buyer-defined specifications be reviewed?
Yes. Send the specification, methods, impurity limits and required documents. TCS can review feasibility before confirming quotation and lead time.
What payment terms are normally used?
Standard payment is 100% T/T before dispatch unless a different arrangement has been approved for an established commercial account.
What lead time should buyers expect?
Lead time depends on stock, batch size, document scope and destination. Available stock can move faster; made-to-order or pallet programs require longer planning.
Is Povidone hygroscopic?
Yes. Povidone is hygroscopic and absorbs significant moisture from the atmosphere. It should be stored in tightly sealed containers at controlled humidity. Absorbed moisture can affect powder flow, tablet hardness, and API stability. Consider moisture impact during formulation of humidity-sensitive products.
Last reviewed: June 2026
Evaluation and research orders (≤10 kg) are shipped with COA, MSDS, and certificate of origin. Bulk commercial orders (>10 kg) qualify for volume pricing with a full technical documentation package available on request.
> Request a Quote
If your team already has a target application, estimated quantity, destination market, or documentation requirements, send those details so the commercial response can be prepared more efficiently.