Oatey® H-20®5 Water Soluble Pipe Flux, 1.7 oz, 8 g/L VOC, 30000 to 50000 cP Viscosity, 3 to 4 pH, Paste, Composition: Glycerine, Triethanolamine Hydrochloride, Tin, Zinc Chloride, Ammonium Chloride, Bismuth, Copper, Light Yellow, Odor/Scent: Slight, 400 to 700 deg F, Applicable Materials: Copper, Brass, Zinc, Galvanized Iron and Tin or Copper-Coated Metal