Product Overview

Propylene Glycol USP Grade is a versatile, synthetic organic compound with profound significance in pharmaceutical and industrial applications. As a diol (double alcohol) with the molecular formula C3H8O2, this colorless, nearly odorless liquid serves as a critical intermediary in numerous chemical processes. Its unique molecular structure enables exceptional hygroscopic properties and remarkable solvent capabilities, making it an indispensable component across multiple industries.

Historically developed as a less toxic alternative to ethylene glycol, propylene glycol has emerged as a preferred chemical in applications requiring low toxicity and high performance. Its pharmaceutical-grade classification indicates rigorous purity standards, ensuring consistent quality and safety for sensitive medical and food processing applications. The USP (United States Pharmacopeia) certification further validates its exceptional purity and adherence to stringent regulatory requirements.

Key Properties

• Chemical Formula: C3H8O2
• Boiling Point: 188°C
• Specific Gravity: 1.036
• Flash Point: 104°C
• Appearance: Transparent, mobile liquid
• Solubility: High water solubility
• Molecular Weight: 76.09 g/mol
• Chemical Stability: Excellent thermal and oxidative stability
• Melting Point: -59°C

Common Applications

• Pharmaceutical Formulations: Propylene glycol serves as a critical solvent and carrier in injectable medications, oral suspensions, and topical preparations. Its ability to enhance drug absorption and stability makes it essential in developing advanced pharmaceutical delivery systems, particularly for medications requiring precise dispersion.
• Personal Care Products: As a versatile humectant and preservative, propylene glycol is extensively used in cosmetics, skin creams, and hygiene products. Its moisture-retaining properties help maintain product consistency and prevent bacterial growth, ensuring extended shelf life and improved product performance.
• Medical Device Manufacturing: The USP Grade classification enables its use in creating medical-grade polymers, surgical lubricants, and sterilization-compatible components. Its low toxicity and excellent chemical compatibility make it ideal for developing sophisticated medical equipment and implantable devices.
• Food Processing: In food and beverage applications, propylene glycol functions as a solvent, preservative, and moisture-control agent. It helps maintain product texture, prevents crystallization in frozen foods, and ensures uniform distribution of flavors and colors.
• Research and Laboratory Applications: Researchers utilize propylene glycol as a versatile solvent and reaction medium in organic synthesis, biochemical studies, and pharmaceutical research, appreciating its low toxicity and predictable chemical behavior.

Safety Precautions

Handling propylene glycol requires adherence to standard laboratory and industrial safety protocols. Always use appropriate personal protective equipment, including chemical-resistant gloves, safety glasses, and protective clothing. Work in well-ventilated areas with access to eye wash stations and safety showers, and avoid direct skin or eye contact.

Store propylene glycol in tightly sealed containers made of compatible materials such as stainless steel, polyethylene, or glass. Maintain storage temperatures between 15-25°C, away from direct sunlight, heat sources, and incompatible chemicals. Ensure storage areas are dry, cool, and equipped with appropriate spill containment measures.

In case of accidental exposure, immediately flush affected areas with copious amounts of water for at least 15 minutes. Remove contaminated clothing and seek medical attention if irritation persists. While propylene glycol is considered low-toxicity, professional medical evaluation is recommended for significant exposures.

Benefits

USP Grade Propylene Glycol offers unparalleled versatility and reliability across multiple industries. Its pharmaceutical-grade purity ensures consistent performance, making it an ideal choice for sensitive applications requiring precise chemical characteristics. The product's low toxicity, excellent stability, and broad compatibility distinguish it from alternative chemical compounds.

Beyond its primary functional attributes, this propylene glycol provides significant economic advantages. Its multi-purpose nature reduces the need for multiple specialized chemicals, streamlining production processes and minimizing overall material costs. The USP certification additionally guarantees regulatory compliance, reducing potential quality control challenges in pharmaceutical, medical, and food-related industries.