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Historically, ammonium mercuric thiocyanate played a crucial role in identifying and isolating thiocyanate ions in analytical chemistry. It was typically used in qualitative tests to detect the presence of thiocyanate, a process that has paved the way for broader applications in chemical analysis. Its use, however, has decreased over the years due to the growing concerns over mercury toxicity and the move towards safer, more sustainable alternatives.
ammonium mercuric thiocyanate formula

Another significant additive is corrosion inhibitors. Corrosion is a common problem in chilled water systems due to the presence of metals like copper and steel. Over time, these metals can corrode, leading to leaks and lower system efficiency. Chemicals such as sodium nitrite, sodium molybdate, and organic inhibitors like azoles are often used to provide a protective layer on metal surfaces, reducing the rate of oxidation and extending the lifespan of the equipment.
what chemical is used in chilled water
