Any chloride containing five chlorine atoms in each molecule(noun)
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Use "pentachloride" in a sentence
"It was during this period that he discovered the iminochlorides by the action of phosphorus pentachloride on the acid amides."
"The latter are obtained by the action of chlorosulphonic acid on aromatic hydrocarbons; a simpler method, however, is to treat the dry alkali sulphonates with phosphorus pentachloride --"
"The chlorides of these compounds are obtained when phosphorus pentachloride is allowed to act upon the acids, and are as a rule crystalline."