Phosphorus Pentasulfide: Properties, Uses, and Safety Precautions Phosphorus pentasulfide (P₂S₅) is a yellow-green, crystalline solid known for its reactivity and strong sulfur odor. It is primarily used in chemical synthesis, lubricant additives, and pesticide production. Due to its flammability and toxicity, proper handling and storage are essential. Chemical Properties Chemica... https://scienceandlaboratoryexp.com/product/phosphorus-pentasulfide/