the.com/chlorine

the element that disinfects your pool and once cleared trenches of life entirely

means A pale yellow-green, highly reactive gas (element number 17) used as a disinfectant and bleaching agent, and infamous as a poison.

from From the Greek 'chloros,' meaning pale green or yellow-green — the same word that colors 'chlorophyll' (the green of leaves). It was named in the early 19th century for the eerie color of the gas itself, the chemist who studied it choosing to christen it by its hue.

war debut
First chemical weapon used at Ypres, 1915
pool smell
That smell is chlorine reacting with sweat and urine
yellow-green
Name comes from Greek for pale green
in your salt
Half of table salt is chlorine
germ killer
Drinking water chlorination ended cholera epidemics
for instance

pool disinfection systems — chlorine gas used in ~90% of public swimming pools worldwide to kill bacteria and viruses

bleach production — sodium hypochlorite (liquid bleach) manufactured by passing chlorine gas through sodium hydroxide

pvc plastic manufacturing — polyvinyl chloride accounts for ~40% of industrial chlorine demand globally

water treatment plants — chlorination used in municipal water systems like new york city to eliminate pathogens before distribution

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