Description Product OverviewOatey #5 lead-free paste flux cleans and fluxes most commonly soldered metals including copper, brass, zinc, galvanized iron, lead and tin or copper-coated metals. Fluxing is a critical step in the soldering process. #5 paste flux provides great wetting properties for better solder flow and can be used with most soft solders. #5 paste flux complies with CA and VT lead content regulations.Product DetailsApplicable Materials: Brass Copper Copper Coated Metal Galvanized Iron Lead TinBase Type: PetroleumColor: YellowCompositions: Ammonium Chloride Petrolatum Water Zinc ChlorideFlash Point: 540 deg FForm: PasteIncludes: BrushNet Content: 1.7 ozpH Range: 3 to 4Specific Gravity: 1.1Temperature Rating: 400 to 700 deg FVapor Density: 1Viscosity: 20000 to 40000 cPsVOC Content: 29 g/LFeaturesEffective on all metals except aluminum and stainless steelCompatible with all common plumbing solder alloysWill not turn copper piping greenGood for large diameter copper piping100% lead-free paste flux cleans and fluxes copper pipingPetroleum base provides cleaning effectiveness