Sulfachloropyridazine sodium is primarily used in veterinary medicine as an antibacterial agent. It is effective against a range of bacterial infections in livestock, particularly in treating gastrointestinal and respiratory infections in cattle, swine, and poultry. The compound works by inhibiting the growth of bacteria, helping to control and prevent the spread of disease within animal populations. It is often administered orally, either mixed with feed or drinking water, ensuring ease of use in large-scale farming operations. Additionally, it is sometimes employed in aquaculture to manage bacterial infections in fish, contributing to healthier aquatic environments and improved yields. Its broad-spectrum activity and relatively low toxicity make it a valuable tool in maintaining animal health and productivity.