Description
1. Product Overview
Propylene Glycol USP (CAS 57-55-6) is a high-purity, pharmaceutical-grade diol widely used as a solvent, humectant, carrier agent, and formulation ingredient across pharmaceutical, food, cosmetic, and industrial sectors. Manufactured to meet United States Pharmacopeia (USP) standards, it delivers exceptional purity, stability, and compatibility for sensitive applications requiring reliable performance. Its broad functionality, low toxicity profile, and regulatory acceptance make it a strategically important raw material in global supply chains.
2. Key Specifications & Technical Characteristics
- Chemical Composition: Propylene Glycol (1,2-Propanediol), molecular formula C₃H₈O₂
- CAS Number: 57-55-6
- Grade: USP / Pharmaceutical Grade
- Purity Level: Typically ≥99.5% purity
- Appearance: Clear, colorless, viscous liquid
- Odor: Nearly odorless with a mild characteristic taste
- Molecular Weight: 76.09 g/mol
- Density: Approximately 1.03–1.04 g/cm³ at 20°C
- Solubility: Completely miscible with water, ethanol, and many organic solvents
- Packaging Options: 215 kg HDPE drums, 1,000 kg IBC tanks, flexitanks, and bulk ISO tanks
- Shelf Life: Typically 24 months when stored in sealed containers under recommended storage conditions
3. Core Industrial Applications
- Pharmaceutical Industry: Used as a solvent and carrier for active pharmaceutical ingredients (APIs), oral liquids, injectables, topical formulations, and medical products due to its high purity and safety profile.
- Food & Beverage Industry: Functions as a food-grade solvent, moisture-retaining agent, and flavor carrier in processed foods, beverages, and flavor formulations.
- Cosmetics & Personal Care: Applied in creams, lotions, shampoos, and skincare products as a humectant and texture-enhancing ingredient.
- Industrial Manufacturing: Used in heat transfer fluids, antifreeze formulations, hydraulic systems, paints, coatings, and chemical processing applications.
- Animal Nutrition & Feed Applications: Utilized as a carrier and processing aid in specialized feed formulations.
Propylene Glycol USP offers superior performance compared with alternative glycols through its excellent solvency, moisture retention, chemical stability, low volatility, and broad regulatory acceptance, helping manufacturers improve formulation efficiency and product consistency.
4. Competitive Advantages
- Consistent High Quality: Produced under strict quality control systems to ensure reliable USP-grade purity and batch-to-batch consistency.
- Global Supply Reliability: Supported by established manufacturing networks and scalable production capacity for industrial and pharmaceutical buyers.
- Flexible Logistics Capability: Available in multiple bulk packaging formats, including IBCs, drums, flexitanks, and ISO tank shipments for international distribution.
- Cost Competitiveness: Provides an economical multifunctional ingredient that reduces the need for multiple formulation additives.
- Sustainability Benefits: Low toxicity, biodegradable characteristics, and efficient manufacturing processes support environmentally responsible product development.
- Technical Documentation: Available with Certificate of Analysis (COA), Safety Data Sheet (SDS), regulatory compliance documents, and quality certifications upon request.
5. Commercial & Supply Information
- Minimum Order Quantity (MOQ): BULK 20 MT
- Loading Capacity: Approximately 20–22 MT per 20-foot container (depending on packaging configuration)





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