[{"from": "human", "value": "Provide a brief overview of this molecule. [F-1].[K+1]"}, {"from": "gpt", "value": "The molecule appears as white powder or crystals with a sharp saline taste. Shipped as a solid or an aqueous solution. Strongly irritates skin, eyes and mucous membranes. Toxic by ingestion. Used in insecticides, solder flux and etching glass."}]