Duratherm XLT-2 – Technical Data Sheet (TDS)
Last Updated: 2021 Duratherm XLT-2 is a liquid-phase heat transfer fluid engineered for long-term operation in applications requiring precise temperature control ranging from –84°C (–120°F) to 177°C (350°F). It offers outstanding heating and cooling performance across a wide temperature range, making it ideal for low-temperature processing, refrigeration loops, and industrial thermal systems.
Link to Technical Data Sheet (PDF)
Quick Facts
- Product Name: Duratherm XLT-2
- Type: Heat Transfer Fluid
- Supplier: Duratherm
- Address: P.O. Box 563, Lewiston, NY 14092
- Phone: 1-800-446-4910
- Website: www.durathermfluids.com
- Country of Manufacture: USA
Applications
- Heating and cooling systems requiring wide thermal operating ranges
- Closed-loop thermal transfer systems
- Secondary coolant in refrigeration loops
- Suitable for food processing, pharmaceuticals, chemical manufacturing, and botanical extraction
Performance Advantages
- Outstanding heating and cooling performance from –84°C to 177°C
- Stable and non-corrosive under extended use
- Extreme low-temperature capabilities
- Consistent properties across temperature ranges
- Low odor and high flash point for user and environmental safety
- Free fluid analysis and technical support provided
Product Description
Duratherm XLT-2 is formulated for long-term stability and reliability in near-cryogenic and moderate heating applications. Its wide temperature range, thermal stability, and low viscosity make it an economical solution for operations requiring both heating and cooling capacity in a single system. The fluid’s chemical stability prevents breakdown, oxidation, and corrosion over time.
Temperature Range
- Maximum Bulk/Use Temperature: 177°C (350°F)
- Minimum Bulk/Use Temperature: –84°C (–120°F)
- Maximum Film Temperature: 204°C (400°F)
- Pour Point (ASTM D97): –90°C (–130°F)
Typical Properties
- Appearance: Clear liquid, slight yellow tint
- Flash Point (ASTM D93): 63°C (145°F)
- Fire Point (ASTM D92): 70°C (158°F)
- Autoignition Temperature (ASTM E-659-78): 275°C (527°F)
- Normal Boiling Point: 195°C (383°F)
- Viscosity (ASTM D445):
- 392 cSt at –84°C (–120°F)
- 8.68 cSt at –40°C (–40°F)
- 3.78 cSt at –18°C (0°F)
- 2.41 cSt at 0°C (32°F)
- 0.90 cSt at 65°C (150°F)
- Density (ASTM D1298):
- 842 kg/m³ at –84°C (52.6 lb/ft³)
- 811 kg/m³ at –40°C (50.6 lb/ft³)
- 797 kg/m³ at 0°C (49.7 lb/ft³)
- 744 kg/m³ at 65°C (46.5 lb/ft³)
- Thermal Conductivity:
- 0.124 W/m·K at –84°C (0.072 BTU/hr·ft·°F)
- 0.102 W/m·K at 65°C (0.059 BTU/hr·ft·°F)
- Heat Capacity:
- 1.695 kJ/kg·K (0.405 BTU/lb·°F) at –84°C
- 2.277 kJ/kg·K (0.544 BTU/lb·°F) at 65°C
- Vapor Pressure (ASTM D2879):
- 0.00 psi at 15°C (60°F)
- 0.17 psi at 65°C (150°F)
- 10.04 psi at 176°C (350°F)
Environmental & Safety Information
Duratherm XLT-2 is plant- and user-friendly, featuring low odor, a high flash point, and no SARA-reportable substances. It is stable, non-corrosive, and suitable for environmentally conscious operations.
Disposal: After its service life, Duratherm XLT-2 can typically be recycled through local waste oil recovery programs. Always follow local environmental regulations.
Compatibility
- Compatible with carbon steel, stainless steel, and most elastomers
- Do not use with strong oxidizers or concentrated acids
- Mixes safely with most hydrocarbon-based thermal fluids
Storage & Handling
- Store in a cool, dry, well-ventilated area away from open flames or high heat.
- Keep containers tightly closed and protect from moisture contamination.
- Wear gloves and safety glasses when handling.