Harris® Stay-Clean® Flux Paste, 4 oz, Brush-In Cap Bottle, Paste, Composition: 2 to 15% Ethylene Glycol, 1 to 10% Ammonium Chloride, 5 to 30% Zinc Chloride, 30 to 80% Petrolatum, 1 to 10% Water, Opaque Silver, Odor/Scent: Odorless, 37 to 60 deg C Melting, Up to 600 deg F, Applicable Materials: Brass, Bronze, Copper, Galvanized, Steel, Monel®