Pharmaceutical Grade HPMC Powder China Factory and Leading Suppliers
Hydroxypropyl Methylcellulose (HPMC) is a premium pharmaceutical-grade polymer derived from the chemical modification of natural cellulose. By grafting hydrophilic hydroxypropyl and methyl groups onto cellulose molecules through a precise etherification reaction, HPMC achieves exceptional solubility and superior film-forming properties, making it an indispensable excipient for the manufacture of high-quality hollow capsules.
Engineered for stability and biocompatibility, our HPMC complies with the rigorous standards of the 2020 Chinese Pharmacopoeia (Volume 4). It serves as a versatile solution for pharmaceutical and nutraceutical applications, offering a plant-based alternative to gelatin that ensures purity, safety, and optimal drug delivery efficiency for global health products.
Detailed Parameters
| Density | 1.39g/cm³ | Hydroxypropoxy (%) | 6.0-10.0 |
|---|---|---|---|
| Methoxy (%) | 27-30 | Loss on Drying (%) | ≤ 5 |
| Ignition Residue (%) | ≤ 1.5 | Heavy Metals (ppm) | ≤ 20 |
| Arsenic Salts (ppm) | ≤ 2 | Ethylene Oxide | Not detected |
| 2-chloroethanol | Not detected | Compliance | Chinese Pharmacopoeia 2020 (Vol 4) |
Key Advantages
100% Plant-Based
Eliminates risks associated with animal-derived materials, such as BSE, foot-and-mouth disease, and other infectious pathogens.
Rapid Dissolution
Dissolves quickly in gastric acid, ensuring faster absorption and immediate efficacy of the active pharmaceutical ingredients.
Chemical Stability
Strong resistance to cross-linking reactions and non-reactive with contents, ensuring high pharmaceutical safety.
Moisture Control
Low water content makes it ideal for highly hygroscopic health foods or traditional Chinese medicine extracts.
Pure Composition
Free from preservatives, allergens, genetically modified substances, and plasticizers for maximum purity.
Patient Compliance
Effectively masks the bitter taste of medications, making capsules easier for consumers to swallow.
Product Gallery
Production Process
Raw Material Extraction
Extraction of high-purity cellulose from premium plant sources such as wood or cotton.
Alkalinization
Reaction with NaOH at low temperatures to open hydrogen bonds for easier etherification.
Etherification
Adding methyl chloride and propylene oxide under high pressure to graft functional groups.
Purification
Acid neutralization and multiple water washings to remove residual alkali and by-products.
Drying & Crushing
Removing moisture and screening for precise particle size distribution.
Quality Control
Strict testing of viscosity, purity, and degree of substitution against pharma standards.
Capsule Performance Comparison
| Feature | HPMC Capsules | Gelatin Capsules |
|---|---|---|
| Source | 100% Plant-Based | Animal-Based |
| Moisture Content | Very Low | Higher |
| Solubility | Up to 10% Higher | Standard |
| Stability | No Cross-linking | Prone to Cross-linking |
| Dietary Suitability | Vegan/Halal/Kosher | Limited |
Frequently Asked Questions
Q: How should HPMC be dissolved to avoid agglomeration?
To prevent lumps, stir and disperse with hot water (above 80°C) first, then cool to room temperature or add cold water while stirring continuously.
Q: Why choose HPMC over gelatin for pharmaceutical capsules?
HPMC is plant-based, eliminating animal-disease risks (BSE), offering better stability for moisture-sensitive drugs, and providing higher solubility.
Q: How can I remove bubbles from an HPMC solution?
Bubbles can be removed by letting the solution stand for 2-12 hours or by using vacuuming and pressurization techniques.
Q: Is HPMC suitable for hygroscopic drug fillings?
Yes, due to its very low water content, HPMC is highly suitable for filling drugs and health foods with strong hygroscopicity.
Q: What are the recommended storage conditions for HPMC powder?
Store in a sealed, dry place, protected from sunlight, rain, and moisture to maintain chemical stability.
Q: Does HPMC react with the active ingredients in the capsule?
No, HPMC has strong chemical stability and does not cause cross-linking reactions with the contents, ensuring drug integrity.
Ready to upgrade your capsule production with premium HPMC?
Contact UsWrite your message here and send it to us
