Propylene Glycol (PG)

Propylene Glycol (PG)

Category

Glycol / Solvent / Humectant / Food & Pharmaceutical Grade Chemical

Description

Propylene Glycol (PG) is a clear, colorless, odorless, and slightly viscous liquid widely used as a solvent, humectant, plasticizer, and stabilizer. It offers excellent compatibility with water, alcohols, and many organic solvents, making it suitable for food, pharmaceuticals, cosmetics, and industrial formulations. PG is considered safe and non-toxic at regulated levels and complies with food and pharma additive standards.

Applications

• Food & Beverage: Humectant, preservative carrier, flavor solvent, anti-caking agent
• Pharmaceuticals: Solvent in oral, injectable & topical formulations
• Cosmetics & Personal Care: Moisturizer in lotions, creams, deodorants, shampoos
• Industrial: Heat-transfer fluids, antifreeze, hydraulic fluids, plasticizer
• Tobacco & E-liquids: Vapor base carrier for nicotine/flavor delivery
• Household & Cleaning: Solvent in detergents, disinfectants, and air sanitizers

Technical Details

• Chemical Formula: C₃H₈O₂
• CAS No.: 57-55-6
• Appearance: Clear, colorless viscous liquid
• Purity: Typically ≥ 99.5%
• Boiling Point: 188°C
• Freezing Point: −59°C
• Density (20°C): ~1.036 g/cm³
• Solubility: Completely miscible with water, alcohols, ketones
• Odor: Practically odorless
• Viscosity: ~52 cP at 20°C
• Grades: Industrial / USP / Food Grade

Packaging

• 200 kg HDPE barrels
• 1000 L IBC totes
• Bulk tanker loads
• Smaller packing for food/pharma grade on request

Storage & Handling

• Store in a cool, dry, well-ventilated area
• Keep containers tightly sealed to prevent contamination
• Use clean transfer pumps and lines for food/pharma handling
• Protect from direct sunlight and heat sources
• Non-flammable; avoid mixing with strong acids, oxidizers
• Follow GMP/food safety protocols for regulated grades
• Dispose according to local environmental regulations

Safety Note

Generally recognized as safe (GRAS) for food and pharma applications when used within regulatory limits. Avoid ingestion or inhalation of industrial grades. Refer to SDS for handling and safety instructions.