THERMASOLV IM7 : Ideal dielectric heat transfer fluid for single-phase immersion cooling systems
THERMASOLV IM7 is a high-performance dielectric heat transfer fluid specifically designed for single-phase or two-phase immersion or direct cooling systems. Its excellent electrical insulation properties allow electronic and electrical equipment to be directly immersed in the fluid while energized. IM7 possesses ideal viscosity, density, and extremely low surface tension characteristics, enabling optimal surface contact and providing superior thermal conductivity. It exhibits excellent compatibility with all common metals and a wide range of plastics and elastomers, and its chemical stability makes it an ideal fluid for immersion cooling.
Suitable for temperatures ranging from ultra-low to high, ensuring long-term stability and efficient heat dissipation of critical electronic components in single-phase systems!
- Dielectric heat transfer fluid
- Boiling point: 76°C/169°F
- No flashpoint & ultra-low GWP
Core Product Advantages
THERMASOLV™ IM7 significantly improves the removal efficiency of **composite thermally conductive interface materials (TIMs)** while maintaining a high safety flash point.
- Enhanced chemical penetration: It can quickly destroy the cross-linked structure of high-grade thermal pastes and silicones containing a high proportion of ceramic and metal fillers, achieving rapid detachment and dissolution.
- Low surface tension: Designed for high-density packaging , it can penetrate into the tiny gaps beneath components (gap cleaning) to ensure no flux or thermally conductive material residue remains.
- Extremely high thermal stability: Suitable for operation over a wide temperature range, maintaining component stability whether soaking at room temperature or cleaning with auxiliary heating.
Safety & Environmental Commitment
In response to the carbon tax and stringent environmental audits faced by Taiwanese companies, IM7 is one of the most compliant options currently available on the market.
- Industry-leading low GWP (Global Warming Potential): Utilizing the latest fluorination technology, its impact on global warming is negligible, far lower than that of traditional hydrocarbon or chlorinated solvents.
- Zero Ozone Depletion (Zero ODP): Protects the atmosphere and fully complies with the most stringent requirements of the Montreal Protocol.
- High flash point safety guarantee: It has excellent safety physical properties, which greatly reduces the risk of factory fires and meets the procurement preferences of Taiwan Science Park for **”non-flammable/high flash point chemicals”**.
- Free of PFAS (PFAS) Restricted Substances: Helping customers cope with increasingly stringent international regulations on PFAS (PFAS).
Exceptional Performance
IM7 delivers professional-grade performance to meet the requirements of Taiwanese semiconductor OSAT (Output Semiconductor Assembly and Test) plants for “surface free energy” and “cleanliness”.
- Perfect material compatibility: Extremely gentle on sensitive metals (such as aluminum, copper, and nickel) and high-end engineering plastics (such as PEEK and LCP) used in precision semiconductor equipment.
- Optimized drying performance: Although it is a low-volatility solvent, its molecular structure design allows it to quickly leave the surface without leaving any oil spots when used with air knife or vacuum drying.
- Ion contamination control: Ensure that the components have extremely low ion residue after cleaning to prevent short circuit risks caused by electrochemical migration.
Cost optimization
By reducing replenishment and waste generation, IM7 achieves a win-win situation of being green and efficient.
- Extended Bath Life: Strong contaminant loading capacity means that solvents do not need to be replaced frequently, significantly reducing the cleaning cost per unit of product.
- Extremely low evaporation loss: Extremely low loss in open tanks, minimizing chemical evaporation waste.
- Reduced energy load: The powerful dissolving force reduces the time required for ultrasonic or mechanical stirring, directly saving on electricity costs.
Application area
- Advanced Packaging: Cleaning of residues in SiP and 2.5D/3D packaging processes.
- AI server cooling components: Efficient cleaning when maintaining the interface between the cold plate and the processor.
- High-end telecommunications equipment: Removal of thermal interface materials from 5G/6G base station power amplifier modules.
- Advanced Driver Assistance Systems (ADAS): Cleaning the protective grease and thermal conductive materials in various sensors and camera modules.
Health, safety and environment
THERMASOLV IM7 is a Greenway product.

Main factors to reduce:
Human safety and health
- Non-flammable, no flash point, and no EUH-phrases. 100% safe for storage and use in equipment.
- Non-toxic, non-corrosive, and free of S risk phrases
Environmental protection and resource conservation
- No environmental hazards: No environmentally related labeling.
- Recyclable and reusable: ECOPROGRAM
- Low viscosity: Reduces pump energy consumption
Comparison Table
THERMASOLV COOLING FLUIDS
| PRODUCT | THERMASOLV CF2 | THERMASOLV CF3 | THERMASOLV IM1 | THERMASOLV IM2 | THERMASOLV IM6 | THERMASOLV IM7 |
|---|---|---|---|---|---|---|
| ODP | 0 | 0 | 0 | 0 | 0 | 0 |
| GWP | < 120 | <108 | 320 | < 10 | 20 | 55 |
| Flash Point | No | No | No | No | No | No |
| Boiling Point (°C/°F) | 110 / 230 | 120 / 248 | 61 / 142 | 49 / 120 | 47 / 117 | 76 / 169 |
| Pour Point (°C/°F) | -110/ - 166 | -82 /-116 | -135 / -211 | -108 / -162 | -117 / -179 | -138 / -216 |
| Critical Temperature (°C/°F) | 285/545 | 285/545 | 195 / 383 | 169 / 336 | 170 / 337 | 210 / 410 |
| Critical Pressure (Mpa) | 5 | X | 2.23 | 1.88 | 2.21 | 2.01 |
| Vapor Pressure (kPa) | 1.9 | 1.5 | 27 | 33 | 35 | 16 |
| Heat of vaporization (KJ/Kg) @BP | 88 | 82.8 | 112 | 88 | 93 | 126 |
| Liquid density (Kg/m3) | 1815 | 1836 | 1520 | 1600 | 1600 | 1430 |
| Kinematic viscosity (cSt) | 1.35 | 1.27 | 0.38 | 0.4 | 0.36 | 0.43 |
| Specific Heat (J/Kg-K) @25°C | 1087 | 1034 | 1183 | 1103 | 1044 | 1220 |
| Surface tension (dynes /cm²) | 15 | 13 | 13.6 | 10.8 | 11.4 | 13.6 |
| Dielectric strenght (KV) | 39.4 | > 35.7 | 28 | > 40 | 79 | > 25 |
| Dielectric constant @ 1 kHz | 1.79 | 2.09 | 7.4 | 1.84 | 1.88 | 7.3 |
| Resistivity (Ohm-cm) | 2,50E+15 | > 1,00E+15 | 1,00E+09 | 1,00E+13 | 1,00E+15 | 1,00E+08 |
| Thermal conductivity (W/m-K) | 0.115 | 0.112 | 0.069 | 0.059 | 0.11 | 0.069 |
| Water content spec (ppm) | 15 | 15 | 50 | 10 | 10 | 100 |
| Water solubility (ppm) | < 10 | < 10 | 95 | 10 | < 10 | 92 |
