Kester 5252 Cleaner is a halogen-free solvent developed for cleaning applications. 5252 is not ozone depleting and is environmentally friendly. It is a suitable substitute for chlorinated solvents used in cleaning applications where fast air-drying is critical. 5252 is most effective as a solvent to clean stencils efficiently. It also readily dissolves misprinted solder pastes, wave-soldered flux residues and other organic contaminants from electronic assemblies. 5252 provides rapid, effective and safe cleaning action. This cleaning solvent is a non-ionic and relatively non-toxic liquid with mild odor.