Within these two broad categories, APIs can also be further classified based on their chemical nature. There are natural APIs, which are derived from plants, animals, or minerals. Examples include morphine from opium poppy and digoxin from foxglove plants. Semi-synthetic APIs, which are chemically modified derivatives of natural substances, also play a crucial role. An example is the antibiotic amoxicillin, a derivative of penicillin that is more effective against a range of bacteria.
One of the key applications of PTSA in water treatment is its role as an acidifying agent. In many water treatment processes, controlling the pH level is crucial. PTSA can effectively lower the pH of water, facilitating various chemical reactions that enhance the removal of contaminants. For example, lowering the pH can increase the solubility of heavy metals, making them easier to extract and remove from water sources.