___ dye crossword clue
Published in New York Times Crossword.
Azo compounds have very vivid colors and so are used to make dyes, especially dyes with the colors red, orange and yellow. The term “azo” comes from the French word “azote” meaning “nitrogen”. French chemist Lavoisier coined the term “azote” from the Greek word “azotos” meaning “lifeless”. He used this name as in pure nitrogen/azote animals die and flames are snuffed out (due to a lack of oxygen).