100% Propylene Glycol Inhibited

Product Overview

100% Propylene Glycol Inhibited is a high-purity, colorless, and odorless diol designed for demanding industrial and laboratory applications. It serves as an excellent solvent, antifreeze agent, humectant, and heat transfer medium, offering exceptional hygroscopic properties and low toxicity. The product is formulated to meet stringent USP-NF monographs and food-grade specifications, ensuring reliable performance across automotive, coatings, and pharmaceutical-adjacent sectors. With precise control of impurities and a low vapor pressure, it provides consistent formulation behavior, even in high-demand processing environments.

As an inhibited glycol, it is maintained under inert conditions to minimize oxidation and degradation, helping preserve purity over extended storage. Its compatibility with water and many organic solvents makes it versatile for formulation science, including fragrance carrier systems and moisture-retention matrices in food-related applications. The product is suitable for use in cold-weather antifreeze formulations and as a high-pidelity carrier for active ingredients, where controlled viscosity and flow are critical.

Key Properties

• Property Name: 100% Propylene Glycol Inhibited
• Chemical Formula: C₃H₈O₂
• Molecular Weight: 76.09 g/mol
• Boiling Point: 188.2°C
• Specific Gravity (25°C): 1.036–1.038 (typical 1.037)
• Specific Gravity (20°C): 1.033–1.035 (typical 1.034)
• Water Content (max): 0.2%
• Appearance: Clear, colorless liquid
• Color (APHA): Max 25 (typical 10)
• Flash Point: 104°C
• Viscosity (25°C): 58.1 cP
• Refractive Index (20°C): 1.431
• Vapor Pressure (20°C): 0.1 mmHg (estimated)
• Chloride (Cl⁻): Max 5 ppm (typical 1 ppm)
• Heavy Metals (as Pb): Max 2 ppm (typical 0.5 ppm)
• Sulfate (SO₄²⁻): Max 10 ppm (typical 2 ppm)
• Arsenic (As): Max 0.5 ppm (typical 0.1 ppm)

Common Applications

• Application Category: Antifreeze Agent — Automotive industry uses to lower coolant freezing point and provide freeze protection in engines under extreme temperatures, compatible with standard cooling systems.
• Application Category: Solvent for Paints — In coatings formulations, improves flow, leveling, and pigment dispersion, aiding Xeric film formation.
• Application Category: Humectant in Food Products — Retains moisture in processed foods and enhances texture while remaining within USP specifications for food-grade use.
• Application Category: Carrier for Fragrances — In cosmetics, dissolves and stabilizes fragrance compounds, enabling uniform delivery and shelf-stable formulations.
• Application Category: Heat Transfer Fluid — Serves as a stable heat transfer medium in industrial processing due to favorable thermal properties and low vapor pressure.
• Application Category: Solvent for Cleaning and Degreasing — Effective in removing residues in industrial cleaning cycles with manageable evaporation rates.
• Application Category: Plasticizer Component — Serves as a plasticizer in controlled formulations where low toxicity and high purity are required.
• Application Category: PESTICIDE/Pharmaceutical Intermediate Support — Used as a co-solvent or stabilizer in multi-component formulations under regulatory allowances.

Safety Precautions

First safety paragraph: Store in a cool, dry place away from direct sunlight and heat sources. Use containers made of HDPE or glass to prevent chemical interactions. Ensure proper ventilation and use PPE including chemical-resistant gloves and splash goggles during handling to minimize exposure risk. Follow storage guidelines to maintain product integrity and compliance with GMP/USP expectations.

Second safety paragraph: While not classified as hazardous, always refer to the SDS for exposure controls and emergency procedures. In the event of skin or eye contact, rinse with plenty of water and remove contaminated clothing; seek medical attention if irritation persists. For inhalation, move to fresh air and seek clinical evaluation if symptoms persist. For ingestion, do not induce vomiting; rinse mouth and consult medical professional if unwell. In case of spills, contain and collect with inert absorbent material and dispose of according to local regulations.

Benefits

✔ High Purity and Consistency – Meets USP/ACS-inspired purity targets with tight impurity control for reliable formulation performance.
✔ Low Toxicity and Hygroscopicity – Diol structure offers safe handling in industrial settings while providing excellent moisture management in formulations.