Diethylene Glycol, commonly known as DEG, is an important industrial chemical used in many everyday products and processes. It is widely used in automotive fluids, textiles, coatings, resins, and plastic-related applications. Because DEG is linked to several major industries, its price often moves in line with broader economic activity. When manufacturing slows down, DEG demand usually drops. When industries grow, demand picks up. For this reason, understanding the DEG Price Forecast is helpful for manufacturers, traders, and buyers trying to manage costs and plan purchases.

In Q3 2025, the global DEG market saw a clear shift in direction. Prices fell across all major regions, reversing the upward trend that had been seen in Q2. The decline was sharp in some markets and moderate in others, but the overall pattern was the same everywhere. Weak downstream demand, high inventory levels, falling feedstock costs, and ongoing economic uncertainty combined to push DEG prices lower worldwide.

This article explains what caused the price decline in Q3 2025, how different regions were affected, and what the DEG price forecast looks like for the near term.