Zhejiang Asia Chemstation
— Your Strategic Partner for Pharmaceutical Solvents & Extraction Media
Zhejiang Asia Chemstation is a dedicated supplier of high-quality solvents and media for the pharmaceutical formulation, botanical extraction, and disinfection sectors. Our product portfolio covers alcohols, polyols, polyethylene glycols, strong polar solvents, and lipophilic organic solvents. With deep understanding of the pharmaceutical industry's stringent requirements for solubility, safety, stability, and regulatory compliance, we are committed to providing precise, stable, and traceable solvent solutions to enhance drug development and manufacturing.
Core Solvent Portfolio & Applications
| Product | Polarity/Solubility | Key Properties | Typical Applications |
|---|---|---|---|
| Ethanol | Semi-polar, miscible with water | Excellent solubility, low toxicity, volatile and recoverable | Extraction of flavonoids, alkaloids, organic acids; pharmaceutical solvents; disinfection (75% solution) |
| Propylene Glycol (1,2-Propylene Glycol) | Polar | Low toxicity, humectant and stabilizer properties; prevents drug hydrolysis | Oral, topical, and injectable formulations; drug dissolution vehicle |
| Glycerol (Glycerin) | Hydrophilic | Viscous, sweet taste, low toxicity; non-irritating when water <10%; preservative effect at >30% | Topical solvent and humectant; liquid formulation excipient |
| Polyethylene Glycol (PEG 300–600) | Hydrophilic, miscible with water | Clear liquid; stabilizes hydrolysis-prone drugs; humectant properties similar to glycerol | Liquid formulations; lotions; ointment and suppository bases |
| Dimethyl Sulfoxide (DMSO) | Strong polar, "universal solvent" | Dissolves poorly soluble drugs (e.g., steroid hormones); skin penetration enhancement; pure form requires dilution | Solubilizing poorly soluble drugs; penetration enhancer for transdermal delivery |
| Lipophilic Organic Solvents (Petroleum ether, Diethyl ether, Chloroform, Ethyl acetate) | Non-polar/low-polar | High selectivity; dissolves lipophilic components;多数 flammable and toxic – handle with care | Extraction of volatile oils, steroids, resins, alkaloids, and other lipophilic natural products |
Quick Reference: Solvent Selection by Application
| Application Scenario | Recommended Solvents | Key Functional Advantage |
|---|---|---|
| Botanical Extraction (Polar compounds: flavonoids, alkaloids, organic acids) | Ethanol, Propylene Glycol | Good solubility, low toxicity, recoverable |
| Botanical Extraction (Lipophilic compounds: volatile oils, steroids, resins) | Petroleum ether, Diethyl ether, Chloroform, Ethyl acetate | High selectivity, extraction efficiency |
| Oral/Topical Liquid Formulations | Propylene Glycol, Glycerol, PEG | Combined dissolution, humectant, and stabilization |
| Injectable Formulations | Propylene Glycol, PEG (specific grades) | Low toxicity, good biocompatibility |
| Solubilizing Poorly Soluble Drugs (e.g., steroid hormones) | DMSO (diluted), PEG | Strong solvency, enhanced drug release |
| Transdermal Drug Delivery Systems | DMSO (diluted), Propylene Glycol | Penetration enhancement, improved bioavailability |
| Disinfection & Sterilization | Ethanol (75%), Propylene Glycol | Broad-spectrum efficacy, safe and volatile |
Why Choose Us
Comprehensive Portfolio – Covering polar, semi-polar, and non-polar solvent systems for extraction, formulation, and disinfection applications.
Consistent Quality – Strict control over purity, moisture, residual solvents, microbial limits, and heavy metals to meet pharmaceutical-grade requirements.
Safety & Compliance – Products comply with pharmacopoeia standards (ChP/USP/EP) and relevant regulations; traceable quality documentation available.
Technical Support – Precision solvent selection and usage recommendations based on extraction processes, formulation types, and regulatory requirements.
Efficient Supply Chain – Leveraging Zhejiang Free Trade Zone advantages for fast response and reliable delivery, supporting R&D and commercial batches.
Industries We Serve
Botanical extract and natural product manufacturers
Chemical and traditional Chinese medicine formulation companies
Topical formulation, lotion, and disinfection product manufacturers
Transdermal drug delivery system (TDDS) developers
Pharmaceutical R&D and CRO/CDMO organizations
Zhejiang Asia Chemstation – Precision Solvents, Empowering Pharmaceutical Innovation.