Widely used in agriculture as a fungicide and pesticide, especially in vineyards and farms to control fungal diseases like mildew and blight. It is a key component in the preparation of Bordeaux mixture, a traditional spray for protecting crops. In industrial settings, it serves as an electrolyte in electroplating processes, particularly for copper plating and in metal finishing operations. Commonly used in educational laboratories for crystal growth experiments and to demonstrate chemical reactions such as single displacement and hydration changes. Employed in the mining industry for froth flotation of minerals and as a reagent in analytical chemistry for testing water content and detecting reducing sugars. Also used in algicides for controlling algae growth in reservoirs, ponds, and swimming pools. In some cases, it acts as a root killer in sewer and drainage systems. Additionally, it finds use in textile printing, dyeing, and as a catalyst in certain organic synthesis reactions.