Kester 63-0000-5760 – 5760 Neutralizer, 1 Gallon

• Size: 1 Gallon
• Removes ionizable residues
• Easily cleaned in water
• Effective for both organic and inorganic residues
• RoHS Compliance

Kester 5760 Neutralizer is a buffered, alkaline concentrated formula that effectively removes both organic and inorganic acid flux residues. This includes water-soluble fluxes used in wave soldering, hot air leveling, and infrared reflow processes. Simple neutralization with caustic soda or other alkaline solutions will not completely remove ionizable, potentially corrosive, and conductive residue which is formed during soldering. 5760 will completely solubilize chloride complex residues such as lead chloride by selective chelation so that a water rise will remove all traces of harmful contamination.

RoHS Compliance

This product meets the requirements of the Restriction of Hazardous Substances (RoHS) Directive, 2015/863 for the stated banned substances.

Application

When diluted to make a 2 to 10% solution with water, 5760 is used as an initial wash followed by a thorough water rinse to ensure the complete removal of 5760 and dissolved flux residues. The blue color of the solution is a concentration indicator that will fade as the solution weakens.

Fresh 5760 may be added to the solution to maintain a constant indicator color. When the solution becomes cloudy, it should be replaced. Parts are immersed for 15 seconds to 2 minutes in 5760 depending on the nature of the residue, part configuration, and the length of time between soldering and cleaning, followed by a clean water rise.

Cleaning

No neutralizer, saponifiers, or detergents are necessary in the water wash system for the complete removal of residues. It is not recommended to use high mineral content tap water. Otherwise, tap, deionized or softened water may be used for cleaning. Generally, in-line spray cleaners should incorporate a gross prewash (to drain) to remove the flux residue prior to washing in 5760.