OPTEON™ SF79 Specialty Fluid – Chemours

Econtrol Devices offers OPTEON™ SF79 Specialty Fluid, a high-solvency industrial cleaning fluid developed by The Chemours Company for precision cleaning, vapor degreasing, defluxing, and the removal of industrial contaminants.

Opteon SF79 is a solvent blend containing trans-1,2-dichloroethylene and proprietary methoxytridecafluoroheptene isomers. It has azeotrope-like properties and a Kauri-Butanol (Kb) value of 103, which the manufacturer identifies as the highest solvency power in its class.

With a boiling point of 47°C, low surface tension, and strong cleaning performance, Opteon SF79 is developed for industrial processes involving oils, grease, silicone, flux residues, and other contaminants.

According to Chemours, the fluid is intended as an alternative to cleaning solvents such as trichloroethylene (TCE), n-propyl bromide (nPB), perchloroethylene, methylene chloride, HCFC-225, HCFC-141b, and certain HFE and PFC fluids.

Key Features of OPTEON SF79 Specialty Fluid

• High Solvency Power: Kb value of 103, measured using ASTM D1133.
• Precision Cleaning Fluid: Developed for industrial cleaning processes requiring strong solvency.
• Vapor Degreasing Applications: Designed for use in vapor degreasing equipment.
• Fast Drying: The 47°C boiling point supports faster drying and subsequent processing of cleaned parts.
• Low Surface Tension: Supports cleaning applications involving industrial components.
• Azeotrope-Like Properties: The manufacturer reports compositional stability during use.
• High Soil Loading Capacity: Designed to reduce equipment downtime associated with solvent change-outs.
• No Surfactants Required: The manufacturer states that surfactants are not needed for residue-free cleaning.
• Low Global Warming Potential: GWP below 15, according to the Technical Information document.
• Negligible Ozone Depletion Potential: As reported by Chemours.
• Recyclable and Reusable: Listed as recyclable and reusable in the manufacturer's Technical Information document.
• No Closed-Cup or Open-Cup Flash Point: Reported in manufacturer testing; flammable vapor-air mixtures may nevertheless form during use.

Applications of OPTEON SF79

Opteon SF79 is intended for a range of industrial precision cleaning applications.

1. Oil and Grease Removal

Opteon SF79 is developed for cleaning applications involving oils, greases, and other industrial contaminants.

The manufacturer reports cleaning performance evaluations involving mineral oil, hydraulic fluid, and grease.

2. Precision Cleaning

The fluid is used in industrial precision cleaning processes where high solvency and low surface tension are required.

3. High-Solvency Defluxing

Opteon SF79 is listed for high-solvency defluxing applications.

Chemours reports that the fluid was effective in cleaning non-polar flux rosin residues from surface-mounted technology printed circuit boards during its performance evaluations.

4. Silicone Removal

Opteon SF79 is used for silicone removal applications. The manufacturer's solubility testing identifies silicone DC-704 as miscible with the fluid.

5. Vapor Degreasing

The fluid is designed for vapor degreasing applications.

According to Chemours, existing vapor degreasing equipment can generally be used with minor or no modifications, subject to the manufacturer's retrofit guidelines.

6. Cold Cleaning

Opteon SF79 is also listed for industrial cold cleaning applications.

Technical Specifications of OPTEON SF79

The following values are taken from the manufacturer's Technical Information document.

All physical-property values are reported at 25°C unless otherwise specified. These are manufacturer-reported values, not guaranteed product specifications.

Chemical Composition

According to the manufacturer's Safety Data Sheet, Opteon SF79 is a mixture containing:

The exact concentrations are withheld as a trade secret.

Cleaning Performance

Chemours evaluated Opteon SF79 through cleaning tests conducted according to ASTM G122.

Contaminant Removal Performance

The figures are from the manufacturer's reported tests, averaged across three trials. They should not be interpreted as guaranteed results under all cleaning conditions.

Solubility of Industrial Contaminants

The manufacturer lists the following contaminants as miscible with Opteon SF79:

• Mineral Oil
• Hydraulic Fluid (MIL-PRF-83282)
• Grease (MIL-PRF-81322)
• Silicone (DC-704)
• Skydrol

Material Compatibility

Chemours provides material compatibility information based on testing with different metals, plastics, and elastomers.

Compatible Metals

The manufacturer reports good compatibility following two weeks of testing at 47°C with:

• Stainless Steel
• Copper
• Brass
• Aluminum

Compatible Plastics

The manufacturer's Technical Information document lists the following plastics as compatible:

• Polyethylene
• Polypropylene
• Teflon™
• Polyester
• Nylon
• FEP/PFA
• Halar
• Kynar

Incompatible Plastics

The manufacturer identifies the following plastics as incompatible:

• Polystyrene
• Polycarbonate
• ABS
• Polyacrylate
• Acrylic (PMMA)
• Polysulfone

Elastomer Compatibility

The manufacturer identifies Teflon™, Kalrez, Ryton, PTFE with EPDM, PTFE with Neoprene, and Parafluor among the compatible materials in its elastomer compatibility table.

It identifies silicone, Hypalon, EPDM rubber, Viton™, Buna N, and fluorosilicone as incompatible in that table.

Material Compatibility Precautions

Chemours reports that several elastomers may experience reversible swelling when exposed to Opteon SF79.

The manufacturer recommends Teflon™ or Teflon-encapsulated gaskets and O-ring seals for diaphragm pumps.

Material compatibility should be verified under the expected operating conditions because specific plastic and elastomer formulations may differ.

Safety and Environmental Information

Opteon SF79 has no reported open-cup or closed-cup flash point and is classified as a nonflammable liquid by NFPA and DOT, according to its Technical Information document.

However, the Safety Data Sheet warns that flammable or explosive vapor-air mixtures may form during use.

Environmental Properties

• Global Warming Potential: Less than 15
• Ozone Depletion Potential: Negligible
• Recyclable and Reusable: Listed in manufacturer documentation

Safety Classification

According to the Safety Data Sheet, Opteon SF79 is classified under the OSHA Hazard Communication Standard as:

• Eye Irritation – Category 2B
• Specific Target Organ Toxicity, Single Exposure – Category 3

The product may cause eye irritation, drowsiness, or dizziness.

The Safety Data Sheet also warns that vapors may displace oxygen and that rapid evaporation may cause frostbite.

Storage and Handling

Opteon SF79 should be handled in accordance with the manufacturer's Safety Data Sheet.

Storage Guidelines

• Store in a clean, cool, well-ventilated area.
• Keep containers properly labeled.
• Store away from direct sunlight.
• Keep the storage temperature below 46°C (115°F).
• Do not expose drums to direct heat.
• Store locked up.
• Follow applicable national storage regulations.

Handling Precautions

• Use adequate ventilation and appropriate local exhaust ventilation where required.
• Avoid breathing mists or vapors.
• Avoid contact with skin, clothing, and eyes.
• Keep away from heat and ignition sources.
• Take precautions against static discharge.
• Use appropriate chemical-resistant gloves and safety goggles.
• Use a drum pump when dispensing from pails or drums containing 5 gallons or more, as recommended by the manufacturer.

Available Packaging Options

The supplied product screenshot lists the following packaging options:

Packaging and availability should be confirmed when requesting a quotation.

Recycling and Disposal

Opteon SF79 is identified as recyclable and reusable in Chemours' Technical Information document.

The manufacturer states that the product's azeotrope-like properties support compositional stability during use.

Disposal Guidelines

• Dispose of waste according to applicable local regulations.
• Do not dispose of waste into sewers.
• Take empty contaminated containers to an approved waste-handling facility for recycling or disposal.

OPTEON SF79 – Product Inquiries at Econtrol Devices

Econtrol Devices provides product information and quotation assistance for Opteon™ SF79 Specialty Fluid and industrial cleaning solvent requirements.

For technical specifications, packaging options, and quotation inquiries related to Opteon SF79, contact Econtrol Devices.

Safety Information: Opteon SF79 is restricted to professional users and should only be used for its specified cleaning applications. Review the manufacturer's current Safety Data Sheet and product label before handling, storing, or using the fluid.