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 fungicide. In industry, it serves as an electrolyte in electroplating processes, particularly for copper plating. Commonly used in schools and laboratories for crystal growing experiments and as a moisture indicator due to its color change when dehydrated. Employed in the textile industry for dyeing and as a mordant to fix dyes to fabrics. Also used in mining and metal recovery operations for froth flotation and as a reagent in analytical chemistry to test for proteins and reducing sugars.