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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