Chemicals, byproducts, and greenhouse gases in solar panels. Chemicals: hydrochloric acid, hydroflouric acid, sodium hydroxide, sulfuric acid, nitric acid, hydrogen fluoride, phosphine and arsine gas, phosphorus oxychloride and trichloride, boron bromite and trichloride, lead. Byproducts: trichlorosilane gas, silicon tetrachloride, toxic particluates from wafer sawing Greenhouse gases: Sulfur hexafluoride (SF6) – 25,000 times more potent than CO2, Nitrogen trifluoride (NF3) – 17,000 times more potent than CO2, Hexafluoroethane (C2F6) – 12,000 times more potent than CO2