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FluoSolv® WS Heavy Duty Cold Cleaning Solvent and Carrier Fluid

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Part Number: ng-FWS
  • Primary Application: Cold Cleaning & Carrier Fluid
  • Boiling Point (C): 41
  • VOC: (g/L): 1,143
  • Kb: 100
  • Replacement for: nPB, TCE, HCFC-225, 71DE
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FluoSolv® WS is a proprietary blend of non- flammable hydrofluoroethers (HFEs) and trans-1,2-dichloroethylene (t-DCE) designed for heavy duty degreasing applications by spray, wipe, tank.  It also performs as an excellent alternative used as a carrier fluid / fast curing agent for epoxies, resins, pastes, fluxes, wax, and oils.

FluoSolv® WS is a drop-in replacement for TCE, n-propyl bromide (nPB) and similar Cold Cleaning degreasing solvents and Carrier Fluids.

FluoSolv® WS solvent blending technology leverages the chemical solvency of the fluid as well as its physical properties such as high density, low surface tension and low viscosity for optimal performance. Our research has shown that to clean metal surfaces in the shortest amount of time the solvent must flow extremely close to the surface to “catch & release” contaminants.

User Benefits

NuGenTec FluoSolv® WS is ideally balanced to deliver performance, worker safety, and desirable environmental properties.

  • Non-ozone depleting chemical (ODC)
  • Drop-in replacement for PERC, TCE & n-PB
  • Low global warming potential (GWP)
  • Low toxicity; high allowable exposure limit (AEL);
  • Non-Flammable; Non-Hazardous
  • Chemically stable; will not go acid

Material Compatibility

FluoSolv® WS is compatible with all metals, ceramic and other non-conducting materials. Most elastomeric materials are compatible except fluoroelastomers such as Viton & Kalrez which tend to swell. It is recommended that all materials be tested prior to use.

Worker Safety

Data from acute toxicity studies of various ingredients have demonstrated that FluoSolv™WS blend has low toxicity. It has a calculated AEL (Acceptable Exposure Limit) of 255 ppm based on its individual components. None of the ingredients in FluoSolv™ WS have any chronic or acute toxicity associated with them which makes it a worker-friendly solvent.

Please refer to the MSDS for information on detailed exposure limits and toxicity-related data.

NuGenTec FluoSolv™ WS exhibits no closed cup or open cup flash point and is not classified as a flammable liquid per established definitions by NFPA or DOT, however being volatile, vapors may become flammable in air. Flashpoint data and vapor flammability limits in air are shown in Table 3 below.


FluoSolv™ WS is thermally & chemically a very stable solvent. It is non-reactive, has low water solubility and will not oxidize or degrade when exposed to air. It is not affected by any sunlight or other sources of UV radiation. Common industrial practice should be implemented for storage; keep away from human food source and extreme temperature conditions. Freezing temperatures will cause the drums to compress and hot conditions will balloon the drum. The product, in any case, is perfectly usable.

Solvent Recycling

FluoSolv™ WS is a stable azeotropic blend easy to reclaim and reuse with a simple distillation process. Commercially available modular recycling units can easily be added to realize sizable savings in solvent usage. Solvent recovery yields are typically in the range of 85 to 97%.

Please contact the FluoSolv™ Technical Services group for information.

Product Specifications

FluoSolv™WS Composition (Typical)


Hydrofluoroethers < 20 wt% Trans-dichloroethylene > 80 wt%

Water < 100 ppm

Non-volatile residue

<100 ppm (drums) <200 ppm (pails)

Appearance Clear, colorless

Packaging & Availability

FluoSolv™ WS is available in three package sizes

  • 55-gal lined metal drums (net wt. 55)
  • 5-gal lined pails (net wt. 55 lb.)
  • 1 gal amber glass bottles (net wt. 11 lb.)

 Note: Drum & Pail have phenolic liner

All package sizes are inventoried at Emeryville, CA & Atlanta, GA. Lead times are 1-3 business days after receipt of order.

  • To the best of our knowledge, this product is California Prop 65 compliant.
FluoSolv® WS Cold Cleaner and Carrier Fluid