In addition to these primary functions, chemical dosing also plays a role in controlling corrosion and scaling in pipelines and treatment systems. Corrosion inhibitors, such as phosphates, are often used to protect metal pipes from deterioration, while anti-scaling agents reduce the formation of mineral deposits. Proper dosing of these chemicals is essential to extend the lifespan of infrastructure and prevent costly repairs.

Another vital aspect of API categorization is based on their application or therapeutic use. For instance, APIs can be classified as analgesics, antipyretics, antimalarials, or even antineoplastic agents, which are used in cancer treatment. Each category features distinct mechanisms of action and target pathways within the body, aiding healthcare professionals in selecting appropriate treatments for various conditions.

1. Scale Inhibitors These chemicals are designed to prevent mineral deposits from forming on surfaces. Common scale inhibitors include phosphonates and polymeric compounds, which disrupt the crystallization process of scaling materials such as calcium carbonate and calcium sulfate.

One of the most critical categories of cooling tower chemicals is biocides. Cooling towers, if left untreated, can become breeding grounds for bacteria, algae, and other microorganisms. The presence of these organisms can lead to corrosion, scaling, and biofilm formation, all of which can negatively impact system efficiency. Biocides, such as chlorine, bromine, and newer non-oxidizing agents, are employed to control microbial growth. They are usually added on a regular schedule or as part of a shock treatment to eliminate existing contaminants, thereby enhancing the overall health of the cooling system.

PAM exhibits remarkable characteristics such as high water solubility, increased viscosity, and excellent film-forming capabilities. These properties make it an ideal candidate for a variety of industrial processes. The molecular structure of PAM also allows for modifications, leading to various forms that can be engineered for specific purposes. For example, anionic PAM is used for thickening and flocculating, while cationic PAM is effective in wastewater treatment due to its charge properties that attract negatively charged particles.

1. Color-Changing Additives These additives respond to laser energy by changing color, providing high contrast between the marked and unmarked areas. They are particularly useful in applications requiring clear and legible markings, such as in the automotive and aerospace industries.

Water is one of the most essential resources for human life, and ensuring its purity is critical for health and well-being. Water purifying chemicals play a vital role in the treatment and purification of water, making it safe for consumption, agriculture, and industrial use. As the world faces increasing challenges such as pollution, population growth, and climate change, the demand for effective water treatment solutions has never been more urgent.

The development of APIs is evolving, especially with advancements in biopharmaceuticals and personalized medicine. Novel techniques such as high-throughput screening and computer-aided drug design are enhancing the discovery of new APIs, enabling researchers to develop targeted therapies and biologics.

On the other hand, biologics are large, complex molecules derived from living organisms, including proteins, nucleic acids, and cells. Biologics often include monoclonal antibodies, vaccines, and gene therapies. The mode of action for biologics can be quite different from that of small molecules; they may target specific pathways in immune response or cellular activity. The development and production of biologics require advanced biotechnology tools and techniques, making them significantly more complex and costly. However, they often offer innovative treatments for diseases that were previously untreatable or difficult to manage.

2. Plasticizers Many types of plastics are rigid in their natural state. To enhance flexibility and workability, plasticizers are added. Phthalates are commonly used plasticizers that soften plastics like polyvinyl chloride (PVC) to produce a more flexible material suitable for applications such as pipes, toys, and flooring. However, due to health concerns regarding certain plasticizers, there is an increasing demand for safer alternatives, such as bio-based plasticizers.

In the food industry, sulphamic acid is sometimes used as a food additive, primarily for its preservative properties. It aids in preventing bacterial growth, ensuring that products remain safe for consumption over extended periods. However, its usage is regulated, and it must be employed within the limits established by food safety authorities.