Compare high-performance TCE alternatives for aerospace and automotive manufacturing. Learn how to transition solvents and explore Enviro Tech’s engineered replacements.
Learn how to replace PERC safely and efficiently. Explore alternative solvents, technical criteria, and Enviro Tech solutions to future-proof industrial cleaning.
Learn how to replace PERC safely and efficiently. Explore alternative solvents, technical criteria, and Enviro Tech solutions to future-proof industrial cleaning.
Precision parts manufacturing demands effective materials selection, minute attention to design details, precise tools and machines, and highly skilled labor. But even a microscopic speck or smudge of grease, oil or dirt on a part can render all of the above useless. For precision parts to fit together to the correct tolerances and for welds to hold, parts must be impeccably cleaned and free of all traces of contamination. Yet, operational efficiency also must be considered. The ideal cleaning system for parts will be both effective and economical.
Learn more about the many benefits of utilizing vapor degreasing technology for your parts cleaning!
Here at Enviro Tech International degreasing solvents are all that we do, and thus we understand the importance of a high quality standard for precision cleaning in the manufacturing process. We also understand that much thought goes in to deciding not just what products are selected for use in critical cleaning, but that the methods in which these products are to be used are equally important.
For decades, n-propyl bromide (nPB, also called 1-bromopropane) was marketed as a drop-in replacement for trichloroethylene (TCE) and perchloroethylene (PERC) in vapor degreasing and precision cleaning. It offered excellent and comparable solvency, non-flammability, and easy adoption in existing cleaning systems.
But the regulatory landscape is changing dramatically and frequently for solvents. Legacy solvents are being targeted for unreasonable risk, and nPB is no exception. The U.S. EPA identified nPB as an unreasonable risk, and the proposed exposure levels are nearly impossible to reach once implemented.
While implementation and enforcement are still a few years away, industries that depend on high-performance cleaning such as aerospace, medical device, electronics, and automotive manufacturing, continuing with nPB comes with an expiration date. The solution: safer, PFAS-free, drop-in alternatives that preserve cleaning performance while meeting modern compliance demands.
When selecting a solvent to replace nPB in precision cleaning, the alternative must meet demanding criteria:
Property | Why It Matters | Target |
Solvency (KB Value) | Dissolves machining oils, fluxes, and greases effectively | Application specific, higher Kb = higher solvency (nPB ~130 Kb) |
Volatility / Boiling Point | Determines cycle time and drying speed | Compatible with vapor degreasers |
Residue / Purity | Aerospace & electronics require zero residue | < ppm non-volatile residue (NVR) |
Surface Tension | Ensures penetration in blind holes, tight assemblies | Low surface tension |
Material Compatibility | Must not damage plastics, elastomers, metals | Broad compatibility |
Safety Profile | Provide an acceptable EHS profile | Non-HAP, non-PFAS, non-carcinogenic |
Regulatory Assurance | Must meet EPA/OSHA rules and anticipated future restrictions | PFAS-free, GWP/ODP compliant |
Drop-In Behavior | Reduces cost and downtime of transition | Works in existing vapor degreasers |
Enviro Tech International has engineered several PFAS-free, non-flammable solvents designed as direct replacements for nPB in vapor degreasing, ultrasonic cleaning, and precision cleaning.
Solvent | KB Value | Flammability | PFAS-Free | Residue | Best Applications |
nPB | ~130 | Non-flammable | No | Zero | Legacy vapor degreasing |
EnSolv Plus | 113 | Non-flammable | Yes | Zero | Aerospace, medical, electronics |
NEXT-HD Pro 5408 | 94 | Non-flammable | Yes | Zero | Aerospace OEM-approved, industrial degreasing |
HD Pro A | 91 | Non-flammable | Yes | Zero | Electronics, Medical |
Next HT | 102 | Non-flammable | Yes | Zero | Cold cleaning |
Enviro Tech International’s EnSolv Plus, Next HD Pro 5408, Next HD Pro A, and Next HT provide safer, PFAS-free, drop-in alternatives engineered for aerospace, medical, electronics, automotive, and industrial cleaning. Each solvent balances performance, compatibility, and compliance to ensure your cleaning operations are future-proof and risk-free.
By choosing Enviro Tech’s engineered solutions, manufacturers can confidently replace nPB without compromising on cleaning quality, throughput, or compliance.