Schaeffer's acid

Schaef·​fer's acid
variants: or Schäffer's acid \ ˈshāfə(r)z-​ \

Definition of Schaeffer's acid

: a crystalline naphtholsulfonic acid HOC10H6SO3H used as a dye intermediate; 2-naphthol-6 sulfonic acid

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History and Etymology for Schaeffer's acid

after L. Schaeffer, 19th century German chemist

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fear of the number 13

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