Description
TMC-40 Electronic Liquid is a direct replacement for 3M™ FC-40. It offers the same chemistry and physical properties as specified in the technical data sheet
TMC-40 is a non-conductive, thermally and chemically stable fluid designed for single-phase heat transfer applications. It is especially suitable for use in the electronics and semiconductor industries for testers, CVD, and TFT manufacturing
The fluid is clear, colourless, odourless, non-flammable, and residue-free, making it suitable for sensitive electronic environments
It features a wide liquid operating range from -57°C to 165°C, allowing consistent performance across various temperature conditions
Because TMC-40 has a narrow boiling range, its composition changes very little over time. This helps minimise fluid loss and ensures consistent transport properties
Confirmed Applications
As per the official technical data sheet, TMC-40 is used in the following applications
- Dielectric Bath
- Electronic Testing
- Gross Leak Testing
- Heat Transfer
- Semiconductor Cooling
- Thermal Shock Testing
It is suitable for semiconductor market applications including:
- Etchers
- Ion Implanters
- Testers
- CVD
- TFT Manufacturing
It complies with MIL-STD-883 for non-destructive leak and thermal shock testing in complex electronics semiconductor industries (Liquid phase: -57°C to 165°C)
Physical & Environmental Properties
| Property | TMC-40 |
| Type | Replacement |
| Form | Liquid |
| Color | Colorless |
| Odor | Odorless |
| Boiling Point | 165°C |
| Freeze/Pour Point | -57°C |
| Average Molecular Weight | 650 g/mol |
| Thermal Conductivity | 0.065 W/m-K |
| Vapor Pressure | 0.29 kPa |
| Latent Heat of Vaporization | 69 J/g |
| Liquid Density | 1855 kg/m³ |
| Kinematic Viscosity | 2.2 cSt |
| Specific Heat | 1100 J/kg-K |
| Coefficient of Thermal Expansion | 0.0012 1/°C |
| Solubility of Water in Solvent | <10 ppmw |
| Solubility of Solvent in Water | <5 ppmw |
| Dielectric Strength | >40 kV |
| Volume Resistivity | 10¹⁵ Ohm-cm |
| Ozone Depletion Potential (ODP) | 0.0 |
| Global Warming Potential (GWP) | ~6000 |
| Flash Point | None |
Key Features
As stated in the official documentation
- Zero Ozone Depletion Potential (ODP)
- Non-Flammable
- High Boiling Point
- No Flash Point
Materials Compatibility
TMC-40 fluid is compatible with most metals and plastics, with some limitations with elastomers
Packaging Options
TMC-40 is available in the following sizes
- 1 Gallon Jug — 11 lb / 5 kg
- 5 Gallon Pail — 44 lb / 20 kg
- 55 Gallon Drum — 550 lb / 250 kg
- Sample — 2.2 lb / 1 kg
- 275 Gallon Tote — Available Upon Request
Shelf Life & Storage
- Shelf life is 5 years from the date of manufacture when stored in original packaging under normal conditions.
- TMC will re-certify material every 5 years up to 20 years
Disposal & Recycling
- The fluid can be recycled and reused.
- TMC Industries offers reclamation services to restore used fluorinated fluids to like-new condition.
- Reclaimed fluids are tested to meet new product specifications and are issued with a Certificate of Analysis
Safety & Handling
Before use, thoroughly read the current product Safety Data Sheet (SDS) and follow all applicable safety precautions including storage, handling, PPE, spill management, and disposal considerations
Warranty & Liability
TMC warrants that each product meets applicable product specifications at the time of shipment. Additional warranty, limitation of liability, and disclaimer terms are provided in the official technical documentation
Summary
TMC-40 Electronic Liquid is a clear, colorless, non-conductive, non-flammable heat transfer fluid designed for electronics and semiconductor applications. With a wide liquid range (-57°C to 165°C), zero ODP, stable physical properties, and compatibility with most metals and plastics, it serves as a direct replacement for 3M™ FC-40 based strictly on confirmed technical data
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