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platinum black

NOUN
  1. a fine black powder of platinum; used as a catalyst in chemical reactions

How To Use platinum black In A Sentence

  • In 1863 Debus transformed hydrocyanic acid into methylamine with platinum black; however, this reaction is fugitive and soon ceases because cyanidation of the metal rapidly destroys its capacity to induce the reaction. Paul Sabatier - Nobel Lecture
  • The car was a platinum black Audi A4 bearing three passengers and a partly-loaded boot.
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