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n. A highly irritating, greenish-yellow gaseous halogen, capable of combining with nearly all other elements, produced principally by electrolysis of sodium chloride and used widely to purify water, as a disinfectant and bleaching agent, and in the manufacture of many important compounds including chloroform and carbon tetrachloride. Atomic number 17; atomic weight 35.453; freezing point -100.98°C; boiling point -34.6°C; specific gravity 1.56 (-33.6°C); valence 1, 3, 5, 7. See Table at element.

n. A toxic, green, gaseous chemical element (symbol Cl) with an atomic number of 17.

n. One of the elementary substances, commonly isolated as a greenish yellow gas, two and one half times as heavy as air, of an intensely disagreeable suffocating odor, and exceedingly poisonous. It is abundant in nature, the most important compound being common salt (Sodium chloride). It is powerful oxidizing, bleaching, and disinfecting agent. Symbol Cl. Atomic weight, 35.4.

n. See chlorin.

Of the color of young leaves; light green.

n. a common nonmetallic element belonging to the halogens; best known as a heavy yellow irritating toxic gas; used to purify water and as a bleaching agent and disinfectant; occurs naturally only as a salt (as in sea water)

"The testing kit: The darker the shade of pink, the more chlorine is present in the water."

gas    chemical element    element    halogen   

sylvite    halite    carnallite   

radiochlorine   

food additive    E925   

sulfur    nitrogen    fluorine    phosphorus    ammonia    magnesium    monoxide    ozone    boron    arsenic