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Boiling Point: 49°C
Pour Point: -108°C
Molecular Weight: 316 g/mol
Critical Temperature: 169°C
Critical Pressure: 1.88 MPa
Vapor Pressure: 40 kPa
Heat of Vaporization: 88 kJ/kg
Data Center Cooling Fluids Made for Hyperscalers
Traditional cooling methods aren’t scalable for today’s AI-era data centers. Immersion cooling fluids are the layer that keeps high-performance computer reliable. Trust the experts to provide the engineered fluids you need to take your data center to the next level.
- Competitive pricing and lead times with direct-from-source shipping
- Every batch tested, certified, and traced from our lab in the USA
- Application support from the original scientists, engineers, and inventors of the original 3M products
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SF 649™: The Immersion Cooling Fluid Built for Data Centers
SF 649 fluid is a versatile heat transfer fluid effective in systems where non-flammability, performance and environmental considerations are important, making it perfect for today’s data centers.
High dielectric strength
Servers submerged in SF 649 operate safely with no modification to power delivery.
Broad materials compatibility
SF 649 is compatible with a broad spectrum of materials, eliminating the need for specialized piping or handling systems.
Low GWP, non-toxic
SF 649 is structurally different from other PFAS compounds, which means it’s non-bioaccumulative, doesn't persist in water, and has low global warming potential.
Technical Specifications
Liquid Density: 1600 kg/m³
Coefficient of Expansion: 0.0018 K⁻¹
Kinematic Viscosity: 0.40 cSt
Absolute Viscosity: 0.64 cP
Specific Heat: 1103 J/kg-K
Thermal Conductivity: 0.059 W/m-K
Surface Tension: 10.8 mN/m
Solubility of Water in Fluid: 20 ppm by wt
Dielectric Strength 0.1″ gap: >40 kV
Dielectric Constant @ 1kHz: 1.8
Volume Resistivity: 10¹² Ohm-cm
Global Warming Potential (GWP): 1
The Benefits of Cooling Your Data Center with SF 649
Enhanced cooling efficiency
SF 649 fluid provides superior cooling performance, helping data centers manage the heat generated by high-density servers and other electronic equipment.
Reduced costs
Data centers can reduce their reliance on traditional air-cooling or direct-to-chip systems by using SF 649 fluid, reducing both capital and operational costs.
Lower PUE
Achieve lower Power Usage Effectiveness (PUE) with immersion cooling, resulting in more energy-efficient data center operations.
Long Term Reliability
Immersion cooling can increase reliability by limiting thermal cycling and eliminating failure modes, such as coolant leaks. SF 649 reduces downtime due to its high vapor pressure, making for easy service without the costly cleanup that hydrocarbons or oils require.
Get More Information Today. Secure Better Cooling for Your Data Center Tomorrow.
Request more information from Standard Fluids and see for yourself how our reliable supply and high-quality engineered fluids are raising the standard in data center cooling.