Food & beverage additives

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Calcium hypochlorite is an inorganic compound. It is the main active ingredient of commercial products called bleaching powder, chlorine powder, or chlorinated lime, used for water treatment and as a bleaching agents. This compound is relatively stable and has greater available chlorine than sodium hypochlorite (liquid bleach). It is a white solid, although commercial samples appear yellow. It strongly smells of chlorine, owing to its slow decomposition in moist air. It is not highly soluble in hard water, and is more preferably used in soft to medium-hard water. It has two forms: dry (anhydrous); and hydrated(hydrous).

Applications 

Calcium hypochlorite is commonly used to sanitize public swimming pools and disinfect drinking water. Generally the commercial substance is sold with a purity of a 65 to 73% with other chemicals present, such as calcium chloride and calcium carbonate, resulting from the manufacturing process. As a swimming pool chemical, it is blended with other chemicals less often than other forms of chlorine, due to dangerous reactions with some common pool chemicals. In solution, calcium hypochlorite could be used as a general purpose sanitizer, but due to calcium residue, sodium hypochlorite (bleach) is usually preferred. 

 Trichloroisocyanuric acid is an organic compound. It is used as an industrial disinfectant, bleaching agent and a reagent in organic synthesis. This white crystalline powder, which has a strong " chlorine odour," is sometimes sold in tablet or granule form for domestic and industrial use.   

Applications 

The compound is a disinfectant, algicide and bactericide mainly for swimming pools and dyestuffs,  and is also used as a bleaching agent in the textile industry. It is widely used in civil sanitation for pools and spas, preventing and curing diseases in animal husbandry and fisheries, fruit and vegetable preservation, wastewater treatment, as an algicide for recycled water in industry and air conditioning, in anti-shrink treatment for woolens, for treating seeds and in organic chemical synthesis. 

Trichloroisocyanuric acid as used in swimming pools is easier to handle than chlorine gas. It dissolves slowly in water, but as it reacts, cyanuric acid concentration in the pool will build-up. 

Sodium dichloroisocyanurat (SDIC) is a chemical compound widely used as a cleansing agent and disinfectant. It is a colorless, water-soluble solid.

 Applications 

It is mainly used as a disinfectant, biocide and industrial deodorant. It is found in some modern water purification tablets/filters. It is more efficient than the formerly used halazone water disinfectant. In these applications, it is a slow-release source of chlorine in low concentrations at a relatively constant rate. As a disinfectant, it is used to sterilize drinking water, swimming pools, tableware and air, and to fight against infectious diseases as a routine disinfection agent. 

It can be used as a preventative; for disinfection and environmental sterilization, for example in livestock, poultry, fish and silkworm raising; bleaching textiles and cleaning industrial circulating water and also to prevent wool from shrinking.

Sodium hypochlorite is a chemical compound. Sodium hypochlorite is most often encountered as a pale greenish-yellow dilute solution commonly known as liquid bleach or simply bleach, a household chemical widely used as a disinfectant or a bleaching agent.

Iron (III) chloride, also called ferric chloride, is an industrial scale commodity chemical compound. 

When dissolved in water, iron (III) chloride undergoes hydrolysis and gives off heat in an exothermic reaction. The resulting brown, acidic, and corrosive solution is used as a flocculant in sewage treatment and drinking water production.