Tag Archives: chemistry

The wonderful capabilities of chlorine

By Terry Arko

Chlorine became popular for pool use in the 1920s. A form of calcium hypochlorite containing 70 per cent available chlorine, and known as high-test hypochlorite (HTH), became available in 1923.  This form of chlorine became very popular as a bleaching agent, as well as a sanitizer for pool water, and production increased rapidly.

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