Which chemical is referred to as HTH?

HTH stands for High Test Hypochlorite, which is a concentrated form of calcium hypochlorite used primarily for water treatment and disinfection. In water treatment, HTH is valued for its high chlorine content, which makes it effective at killing bacteria, viruses, and other pathogens in both drinking water and swimming pools.

The term "High Test" indicates that this compound is a more potent source of chlorine compared to other hypochlorite products, allowing water operators to achieve effective disinfection with a smaller quantity of chemical. This is particularly important in maintaining safe water quality standards and is a factor in its common usage in both municipal and recreational water systems.

The other terms in the options do not accurately define HTH. Hypoaluminate, hydrated total hypochlorite, and heavy total hypochlorate are not recognized forms of chlorine compounds used for water disinfection in the same way as High Test Hypochlorite. Thus, the correct identification of HTH is crucial for professionals in water treatment to ensure effective and safe chlorine practices.