描述
3M Novec 71DA Engineered Fluid Azeotropic Defluxing Solvent
Type: Azeotropic Blend
Boiling Point: 40°C
Surface Tension: 16.4 dynes/cm
ODP/GWP: 0 / 170
Packing: 5 kg / 20 kg drum
3M Novec 71DA Engineered Fluid is a true azeotropic blend of methyl nonafluorobutyl ether (C₄F₉OCH₃, 52.7%), trans-1,2-dichloroethylene (t-DCE, 44.6%), and ethanol (2.7%). As a true azeotrope, it maintains constant vapor and liquid composition at its boiling point of 40°C, ensuring consistent cleaning performance without composition shift during distillation or reclamation. This nonflammable fluid is specifically designed for defluxing and degreasing applications, offering an environmentally sustainable alternative to ozone-depleting materials and aqueous cleaning processes.
Novec 71DA provides enhanced ionic contaminant removal through its ethanol component, while its low surface tension of 16.4 dynes/cm ensures excellent wetting and penetration of tight spaces in electronic assemblies. With zero ozone depletion potential, a low GWP of 170, and exposure guidelines that indicate a large margin of safety, this fluid is ideal for immersion defluxing and degreasing of electronic components, cleaning of oils, greases, waxes, and solder flux residues, as well as precision coating of silicones and lubricants.
Genuine 3M Imported Stock and Technical Support
We supply stable spot inventory of genuine 3M Novec 71DA engineered fluid. Official TDS, SDS, and batch COA documents are available for defluxing, degreasing, and precision cleaning applications.
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Complete SDS, COA, and technical documentation available
Core Advantages of 3M Novec 71DA Engineered Fluid
- True azeotropic composition — constant boiling point and composition, no fractionation during distillation
- Zero ozone depletion potential — environmentally sustainable replacement for ODS solvents
- Low GWP: 170 — significantly lower than many cleaning solvent alternatives
- Enhanced ionic contaminant removal — ethanol component improves flux residue removal
- Low surface tension: 16.4 dynes/cm — excellent penetration and wetting for tight spaces
- Nonflammable — no flash point, safe operation in manufacturing environments
- Favorable regulatory profile — t-DCE is not a Hazardous Air Pollutant (HAP)
- Broad material compatibility — suitable for use on electronic assemblies and sensitive components
Main Applications
- Defluxing of electronic assemblies — removal of solder flux residues from printed circuit boards
- Degreasing of components — cleaning of oils, greases, waxes, and handling oils
- Precision cleaning — cleaning of sensitive electronic components and assemblies
- Coating solvent — precision coating of silicones and other lubricants
- Rinsing and drying agent — spot-free drying of precision components
- Replacement for chlorinated solvents — drop-in replacement for Freon TEG and Genesolv 2004
Full Technical Parameters
| Property | Typical Value | Test Method |
| Composition | Methyl Nonafluorobutyl Ether (52.7%) / t-DCE (44.6%) / Ethanol (2.7%) | — |
| Appearance | Clear colorless liquid | Visual |
| Azeotrope Type | True azeotrope | — |
| Boiling Point | 40°C | ASTM D1078 |
| Freeze Point | -29°C | ASTM D97 |
| Liquid Density (25°C) | 1.33 g/ml | ASTM D891 |
| Surface Tension | 16.4 dynes/cm | — |
| Vapor Pressure (25°C) | 381 mmHg | — |
| Viscosity (25°C) | 0.45 cP | — |
| Kauri-Butanol Value | 33 | — |
| Heat of Vaporization | 50 cal/g | — |
| Ozone Depletion Potential | 0.00 | — |
| Global Warming Potential | 170 | — |
| Flash Point | None | — |
| Flammability | Nonflammable | ASTM E681-94 |
| Exposure Guideline (HFE component, 8hr TWA) | 750 ppm | AIHA |
| Exposure Guideline (t-DCE, 8hr TWA) | 200 ppm | — |
| Exposure Guideline (Ethanol, 8hr TWA) | 1000 ppm | — |
Note: All listed figures are typical values and may vary by production batch. Complete independent qualification testing is required before mass production deployment.
Handling and Storage Recommendations
| Storage Rules | Store sealed original containers in a dry, well-ventilated area away from heat sources and direct sunlight. |
| Forbidden Environments | Avoid exposure to open flames, strong oxidizing agents, and reactive metal powders. |
| Operation Protection | Maintain adequate ventilation. Wear nitrile protective gloves and anti-splash safety goggles during handling. |
Official Technical Documentation
| Document Type | Document Introduction | Document Request |
| TDS | 3M Novec 71DA original factory technical data sheet | Request TDS |
| SDS | Safety data sheet covering transport, storage, and handling guidelines | Request SDS |
| COA | Batch-specific certificate of analysis | Request COA |
Frequently Asked Questions
What is 3M Novec 71DA Engineered Fluid?
3M Novec 71DA is a true azeotropic blend of methyl nonafluorobutyl ether (52.7%), trans-1,2-dichloroethylene (44.6%), and ethanol (2.7%). It is specifically formulated for defluxing and degreasing applications with constant boiling composition and zero ozone depletion potential.
What is the boiling point of Novec 71DA?
Novec 71DA has a boiling point of 40°C with a freeze point of -29°C. As a true azeotrope, it maintains constant vapor and liquid composition at its boiling point.
Is Novec 71DA flammable?
No. Novec 71DA is nonflammable with no flash point, providing safe operation in cleaning and defluxing applications.
What applications is Novec 71DA suitable for?
Novec 71DA is ideal for defluxing of electronics assemblies, degreasing of components, cleaning of oils, greases, waxes and solder flux residues, rinsing and drying, coating solvent, and precision coating of silicones and lubricants.
What is the exposure guideline for Novec 71DA?
Novec 71DA has component-specific exposure guidelines: 750 ppm (HFE component), 200 ppm (trans-1,2-dichloroethylene), and 1000 ppm (ethanol), providing a large margin of safety in intended cleaning applications.
Is Novec 71DA a VOC?
The HFE component of Novec 71DA is excluded from VOC definition by U.S. EPA. The t-DCE and ethanol components are VOC-designated. However, t-DCE is not considered a Hazardous Air Pollutant (HAP).
Related 3M Novec Engineered Fluids
Compare 3M Novec engineered fluids for different cleaning and application requirements.
| Product Grade | Type | Boiling Point | Surface Tension | ODP/GWP | Core Application |
| Novec 71DA | Azeotropic blend | 40°C | 16.4 dynes/cm | 0 / 170 | Defluxing, degreasing |
| Novec 7100 | Single compound | 61°C | 13.6 dynes/cm | 0 / 320 | Solvent cleaning, heat transfer |
| Novec 7100DL | High purity single compound | 61°C | 13.6 dynes/cm | 0 / 320 | Lubricant deposition, high purity cleaning |
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We supply genuine 3M Novec 71DA azeotropic engineered fluid for defluxing, degreasing, and precision cleaning applications. Contact us for bulk pricing, sample availability, technical documents, and application support.
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Disclaimer: All technical data on this page are for general guidance only and are not product specifications. Buyers must carry out independent trials and verify suitability before bulk ordering. Actual values may vary between production lots.
