I will say that the only one I was ever wary of was the anhydrous trichloride.
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When Davy damaged his eyesight in an accident with nitrogen trichloride, he decided to employ Faraday as a secretary.
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He combined 2-chloroethanol with aqueouspotassium sulfide, and then treated the resulting thiodiglycol with phosphorus trichloride.
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The most prevalent precursor is ruthenium trichloride, a red solid that is poorly defined chemically but versatile synthetically.
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When actinium trichloride is administered intravenously to rats, about 33% of actinium is deposited into the bones and 50% into the liver.
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Elemental phosphorus is the base for furnace-grade phosphoric acid, phosphorus pentasulfide, phosphorus pentoxide, and phosphorus trichloride.
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Examples of Lewis acids include all metal cations, and electron-deficient molecules such as boron trifluoride and aluminium trichloride.
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However, in contrast to the oxyfluoride, the oxychloride could well be synthesized by igniting a solution of actinium trichloride in hydrochloric acid with ammonia.
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Additionally, at least some cheaply made preban absinthes were reported to be adulterated with poisonous antimony trichloride, which was reputedly added to enhance the louching effect.
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More examples
Any compound containing three chlorine atoms in each molecule