sentence: Many lead compounds are used to make colored glazes in ceramics.
sentences_after: Lead can be used in PVC pipes. Lead compounds are added to candles to make them burn better. Lead compounds are still used as pigments in some places. Lead compounds were added to gasoline, but are now outlawed. Some lead compounds are semiconductors and are used in photodetectors.
concept_name: lead compound
headings: Lead Uses As chemical compounds
categories: chemical elements metals