单词	Schaeffer's acid
释义	Schaeffer's acid noun Schaef·​fer's acid variants or Schäffer's acid ˈshāfə(r)z- : a crystalline naphtholsulfonic acid HOC10H6SO3H used as a dye intermediate; 2-naphthol-6 sulfonic acid Word History Etymology after L. Schaeffer, 19th century German chemist
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