Karl Fischer reagent

noun
Karl Fisch·er reagent | \ˈkärlˈfishər-\

Definition of Karl Fischer reagent 

: a colored solution of pyridine, sulfur dioxide, iodine, and anhydrous methanol that reacts quantitatively with water to form a colorless solution and is used to determine the amount of water in numerous substances

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History and Etymology for Karl Fischer reagent

after Karl Fischer, 20th century German chemist

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