noun
or schäf·fer's acid ˈshāfə(r)z-
Usage: usually capitalized S
Etymology: after L. Schaeffer, 19th century German chemist
: a crystalline naphtholsulfonic acid HOC 10 H 6 SO 3 H used as a dye intermediate; 2-naphthol-6 sulfonic acid
noun
or schäf·fer's acid ˈshāfə(r)z-
Usage: usually capitalized S
Etymology: after L. Schaeffer, 19th century German chemist
: a crystalline naphtholsulfonic acid HOC 10 H 6 SO 3 H used as a dye intermediate; 2-naphthol-6 sulfonic acid
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012