Syltherm XLT and Syltherm 800 are Silicone-based Heat Transfer Fluids (See Heat Transfer Fluid) commonly used in Chiller Technology. They have low fouling potential, a Low Freeze Point, and High Temperature Stability and are Non-Corrosive. They have low acute oral toxicity, and are Non-reportable under SARA Title III. Syltherm XLT has a recommended use range from -101°C to 260°C and is ideal for low temperature heat transfer and promotes pump ability. Syltherm 800 is designed for high temperature liquid-phase operation, and has a recommended operating range of -40°C to 400°C.