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Introduction Glycols are versatile compounds widely used across various industries, from automotive to food and pharmaceuticals. Among them, ethylene glycol (EG) and propylene glycol (PG) stand out due to their extensive applications and distinct properties. Understanding the differences between these two glycols is crucial for selecting the appropriate one for specific needs.​ Key Takeaways Ethylene glycol is best for industrial cooling; propylene glycol is safer for food and cosmetics. EG is …