Oatey® H-20®95 Water Soluble Tinning Flux, 16 oz Net Content, Water Soluble Flux Type, Composition: 2 to 8% Zinc Chloride, 1 to 5% Ammonium Chloride, 0.1 to 1% Copper, 0.1 to 1% Bismuth, 6 to 12% Glycerol, 4 to 8% Tin, Paste Form, Gray, Slight Odor/Scent, 1 year Shelf Life, 20000 to 40000 cPs Viscosity, 400 to 700 deg F, 7 g/L VOC, Density: 1.3, 3 to 4 pH, Applicable Materials: Brass, Copper, Copper-Coated Metals, Galvanized Iron, Tin, Zinc