4140 Flux Remover for PC Boards is a blend of ethyl alcohol, isopropanol and ethyl acetate packaged in a convenient aerosol can. It is an eco-friendly dry-cleaning solvent. It has a non-corrosive and non-conductive formulation with a moderate dry time.Because it is safe for most plastics, seals, heat sinks and printed circuit board components, this flux cleaner spray is widely used in the electronics industry. It is great for removing rosin, non-rosin, no-clean fluxes, and ionic contamination.For more aggressive cleaning try our 413B Flux Remover.