Dow Propylene Glycol USP/EP (PG Dow Solvent) – High-Purity Pharmaceutical, Food & Cosmetic Grade Raw Material
Propylene Glycol (commonly referred to as PG solvent, 1,2-propanediol, C₃H₈O₂, CAS 57-55-6) is a clear, colorless, practically odorless, slightly viscous, water-soluble, and hygroscopic liquid. The Dow PG USP/EP grade manufactured by The Dow Chemical Company complies with the stringent monographs of the United States Pharmacopeia (USP), European Pharmacopoeia (EP), Japanese Pharmacopoeia (JP), and Food Chemicals Codex (FCC, food additive code E 1520), delivering an active purity assay of at least 99.8%. As a multi-purpose basic chemical, it functions as a critical carrier, solvent, and humectant in pharmaceutical, cosmetic, and food formulations, supplied in factory-sealed drums for industrial manufacturing.
Technical Specifications – Dow Propylene Glycol USP/EP (Dow Chemical TDS)
| Technical Parameters & Identification | Guaranteed Standard (Dow Typical & Spec Values) |
|---|---|
| Chemical Name / Chemical Formula | 1,2-Propanediol / CH₃-CH(OH)-CH₂OH (C₃H₈O₂) |
| CAS Number / EINECS Number | 57-55-6 / 200-338-0 |
| Active Assay (by weight) | ≥ 99.8% wt (> 99.8% by weight) |
| Water Content (by weight) | ≤ 0.2% wt (< 0.2% by weight) |
| Physical Appearance & Odor | Clear, colorless, practically odorless, slightly viscous liquid |
| Specific Gravity (@ 20/20°C) | 1.038 (at 25/25°C: 1.033) |
| Dynamic Viscosity (@ 25°C) | 48.6 mPa.s (centipoise) |
| Boiling Point & Distillation Range | 187°C (Standard distillation range: 186°C – 189°C) |
| Flash Point (Closed Cup) | 104°C (Pensky-Martens Closed Cup) |
| Quality Testing Standards | Complies with cGMP (IPEC), Kosher, Halal, USP, EP, JP, FCC |
| Standard Commercial Packaging | 215kg Net factory-sealed steel/plastic drums or IBC totes |
Technological Properties & Competitive Advantages of Dow PG USP/EP
- Stringent High Purity (> 99.8%): Manufactured in compliance with current Good Manufacturing Practice (cGMP) guidelines published by IPEC, with residual water strictly restricted below 0.2%, ensuring absolute safety for direct human exposure in pharmaceutical, cosmetic, and food applications.
- Outstanding Solvency & Humectant Capabilities: Benefiting from its bifunctional 1,2-propanediol molecular configuration, it acts as an exceptional coupling agent between aqueous and non-aqueous phases, preventing moisture loss, prolonging shelf-life, and stabilizing product emulsions.
- Low Toxicity with Global Approvals: Possessing minimal biological toxicity and a pronounced super-cooling ability (pour point < -57°C), it serves as a non-toxic replacement for ethylene glycol in secondary cooling systems across the food and beverage industry.
Industrial Applications Across Market Sectors
Certified to international compendia, Propylene Glycol USP/EP is widely utilized across diverse manufacturing fields:
- 1. Food & Beverage Processing (Food Grade - E 1520):
• Functions as an extraction solvent and carrier for food colors, flavors, antioxidants, and active enzymes.
• Acts as a humectant and dough conditioner in bakery goods, confectionery fillings, and concentrated beverage syrups. - 2. Cosmetics & Personal Care Formulations:
• Serves as a humectant, viscosity modifier, and skin-conditioning agent in moisturizing creams, serums, sunscreens, shampoos, body washes, and toothpastes. - 3. Pharmaceuticals & Medical Formulations (Pharma Grade):
• A primary solvent and solubilizer for active pharmaceutical ingredients (APIs) in oral syrups, liquid solutions, topical ointments, throat sprays, and injectables. - 4. Basic Chemicals & Secondary Refrigeration:
• An environmentally friendly secondary heat-transfer fluid (chilling fluid) in food processing cooling circuits, dairy facilities, breweries, and cold storage warehouses.
Technical Handling, Storage & Safety Guidelines
⚠️ TECHNICAL HANDLING & STORAGE ADVISORY:
• Thermal Management: Propylene Glycol is stable for at least 2 years when stored in closed containers at ambient temperatures. When product heating is applied for bulk transfer, the temperature should not exceed 40°C to prevent oxidative degradation and product discoloration.
• Hygroscopic Nature: The product exhibits high hygroscopicity. Always reseal drum bungs tightly immediately after opening to prevent atmospheric moisture absorption from reducing active assay below 99.8%.
Commercial Supply Policy at THP Chemical
Tan Hung Phu Chemical Co., Ltd. (THP Chemical) is a dedicated wholesale distributor of genuine Propylene Glycol USP/EP (Dow Chemical) supplying manufacturing plants nationwide:
- 100% genuine factory imports from The Dow Chemical Company, fully compliant with USP, EP, JP, and FCC standards with guaranteed active assay ≥ 99.8% wt.
- Standard packaging: Original 215kg Net heavy-duty steel/plastic drums with tamper-evident seals or bulk IBC totes.
- Comprehensive compliance documentation: Batch-specific Certificate of Analysis (COA) from Dow, 16-section Material Safety Data Sheet (MSDS), and legal VAT commercial invoices provided with each dispatch.
- Substantial inventories maintained at our central logistics center in Ho Chi Minh City, supporting rapid nationwide delivery with competitive wholesale volume pricing.
Frequently Asked Questions (FAQ)
1. What is the difference between Industrial Grade PG and PG USP/EP?
PG USP/EP is manufactured under strict cGMP protocols in dedicated facilities to achieve > 99.8% purity, meeting rigorous pharmacopoeial monographs for direct human ingestion, pharmaceuticals, and cosmetics. Industrial Grade PG is intended strictly for non-ingestible applications such as unsaturated polyester resins, industrial coolants, and de-icers.
2. Does Tan Hung Phu provide batch-specific COAs and MSDS?
Yes. Tan Hung Phu supplies original factory Certificates of Analysis (COA) corresponding to each production batch from Dow, complete 16-section MSDS sheets, and legal commercial VAT invoices with every wholesale order to satisfy corporate QA/QC and regulatory audits.
3. What is the minimum wholesale order quantity at THP Chemical?
THP Chemical distributes wholesale orders starting from single 215kg drums or full IBC totes. For R&D laboratories and pilot formulations, trial sample carboys can be provided upon direct request.
Pharmaceutical manufacturers, cosmetic laboratories, food processors, and industrial buyers seeking to buy Propylene Glycol bulk (Dow PG USP/EP – 215kg Drum / IBC Tote) or requesting batch COA/MSDS documents and R&D trial samples, please contact our Technical Sales Department directly:
Tan Hung Phu Chemical Co., Ltd. (THP Chemical)
Hotline / Zalo: 0913 711 647
Email: tanhungphu@thpchemical.com
