TUW-7100 Electronic Fluorinated Fluid: One Solution for Precision Cleaning, Thermal Cooling & Drying
2026-10-26
In the entire process of electronic manufacturing and precision equipment maintenance, electronic fluorinated fluids are indispensable auxiliary materials. Unlike wet chemicals that act directly on the product, hydrofluoroether (HFE)-type electronic fluorinated fluids mainly enter at the equipment and component level, serving multiple functions such as precision cleaning, low-temperature heat transfer, solvent dilution, and dehydration drying. TUW-7100 is a representative of this category—it does not push every scenario to the extreme, but leverages its "one fluid, multiple uses" characteristic to let production lines with moderate requirements complete the most processes with the fewest material types.
1. TUW-7100 Product Overview
TUW-7100 is nonafluorobutyl methyl ether (C4F9OCH3, molecular formula C5H3F9O), the domestic alternative model to 3M™ Novec™ 7100 electronic fluorinated fluid (NO PFAS), CAS No. 163702-08-7, gas chromatography purity 99%, and is a colorless transparent liquid. It features zero ODP (Ozone Depletion Potential) and low GWP (Global Warming Potential), short atmospheric residence time, high chemical and thermal stability, low toxicity, and low surface tension. It is an ideal ODS (Ozone-Depleting Substance) substitute, widely used in medical, electronics, metalworking, precision instruments, optical lenses, communications, aerospace and other fields.
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Item
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Parameter
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Product Model
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TUW-7100
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Chemical Name
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Nonafluorobutyl methyl ether (HFE-7100 series)
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Molecular Formula
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C5H3F9O
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CAS No.
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163702-08-7
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Molecular Weight
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250
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Appearance
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Colorless transparent liquid
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Boiling Point
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61°C
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Density (25°C)
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1.52 g/mL
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Freezing Point
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-135°C
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Surface Tension
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13.6 dyn/cm
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Vapor Pressure (25°C)
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202 mmHg
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Latent Heat of Vaporization
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112 kJ/kg
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ODP
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0
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GWP
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320
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Flash Point
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None
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Solubility of Solvent in Water
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12 ppmw
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Solubility of Water in Solvent
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95 ppmw
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GC Purity
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99%
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Permissible Concentration (TWA)
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750 ppm
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2. Product Features & Advantages
- Mild solvency: removes light oil stains, fingerprints, and particles without damaging coatings and sensitive materials on precision components
- Low surface tension (13.6 dyn/cm): strong penetration, reaches micron-scale gaps
- Low boiling point (61°C): fast evaporation—dries in tens of seconds, no water marks
- Low freezing point (-135°C): stays liquid and flowable in low-temperature environments, no solidification
- High chemical and thermal stability: reliable long-term performance
- Low toxicity, no flash point: safe operation, replaces traditional organic solvents
- Zero ODP, low GWP (320): environmentally compliant, short atmospheric residence time
- One fluid, multiple uses: covers cleaning, cooling, dilution, and drying—four processes in one bottle
3. One Fluid, Multiple Uses: Four Application Scenarios
Precision Cleaning (Primary Use): Covers semiconductor etch chamber cleaning (removing polymer deposits from the chamber), FOUP (front-opening unified pod / wafer transport box) cleaning, precision electronic components (connectors, sensors, hard drive parts), and LCD/OLED display cleaning. The low boiling point (61°C) means fast evaporation—after cleaning, the workpiece dries in tens of seconds, no drying step required, and no water marks remain.
Thermal Cooling: Suitable for laboratory constant-temperature baths, small electronic equipment temperature control, test fixture cooling, as well as data center immersion cooling, power device immersion cooling, and dry etcher temperature control. The freezing point of -135°C means it does not solidify in low-temperature environments. For high heat-flux-density scenarios such as high-power server immersion cooling, TUW-7500 (boiling point 134°C, GWP of only 1) is recommended.
Solvent & Dilution: Serves as an electronic coating thinner, air-tightness testing and voltage testing medium, reaction solvent and analytical extraction solvent, as well as lubricant-deposition dilution for precision mechanical components.
Dehydration Drying: Acts as a displacement drying agent after water-based cleaning—the liquid displaces surface water and then evaporates quickly, leaving workpieces directly dry with no water marks.
4. Environmental & Safety
TUW-7100 has an ODP of 0 and does not deplete the ozone layer. Its GWP is 320, a moderate level among hydrofluoroethers—much lower than perfluorocarbon fluids (PFC), but not as extreme as TUW-7500 (GWP = 1). It has a short atmospheric residence time and low environmental burden. The product has no flash point and low toxicity; its permissible exposure limit (TWA) is 750 ppm, delivering high operational safety. Still, as a chemical, it requires ventilation and basic protective measures during operation. Refer to the MSDS for detailed safety data. If the product is exported to Europe and customers are sensitive to carbon footprint, evaluate models with lower GWP.
5. Selection Recommendations & Economic Value
TUW-7100 suits production lines with moderate requirements—"not heavy cleaning, not extreme cooling." The comparison with other TUW series products is as follows:
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Product Model
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Boiling Point
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Key Parameters
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Core Positioning
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TUW-7100
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61°C
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GWP 320, freezing point -135°C, density 1.52 g/mL
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Primarily precision cleaning, with cooling, dilution, and drying as secondary functions—one fluid, multiple uses
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TUW-72DA
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44°C
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Azeotrope, density 1.27 g/mL, surface tension 18 mN/m
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Medium-to-heavy degreasing and flux removal, handling heavy oil residue such as PCBA flux
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TUW-7500
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134°C
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GWP 1, melting point -93°C, density 1.626 g/mL
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High-end temperature-control scenarios such as high-power server immersion cooling
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Let's run the numbers: if a production line originally used three media—cleaner A, desiccant B, and coolant C—each with an annual consumption of 200 liters, after switching to unified TUW-7100:
- Purchase orders drop from 3 to 1, reducing management costs
- Inventory drops from 3 types to 1, saving warehouse space
- Staff only need to learn one set of operating procedures
- Waste-liquid treatment categories decrease
Of course, TUW-7100 is not universal. If your cleaning task is particularly heavy (such as RMA flux residue), turn to azeotropic strong-dissolution products like TUW-72DA. If cooling conditions are extreme, TUW-7500 is required. But on many production lines with moderate "not heavy cleaning, not extreme cooling" requirements, unifying on TUW-7100 is a highly cost-effective choice.
6. Conclusion
The requirements of electronic manufacturing for auxiliary materials are shifting from "single-function compliance" toward "multi-effect, stable, reliable, and environmentally compliant." Built on hydrofluoroether technology, TUW-7100 integrates precision cleaning, thermal cooling, solvent dilution, and dehydration drying into a single fluid. While meeting process requirements, it significantly reduces the combined costs of procurement, warehousing, training, and waste-liquid treatment. For electronics manufacturing enterprises pursuing efficient operations, this is a solution worth serious evaluation.
Shenzhen Huayi Xiongdi specializes in electronic fluorinated fluids and fluorine-containing functional fluid supply, providing customers with product documentation, sample testing, and application solution discussions. For sample testing inquiries, please contact us via the right side.
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