noun
Usage: usually capitalized R
: a crystalline sulfonic acid HOC 10 H 5 (SO 3 H) 2 derived from beta naphthol and used as a dye intermediate; 2-naphthol-3,6-disulfonic acid
noun
Usage: usually capitalized R
: a crystalline sulfonic acid HOC 10 H 5 (SO 3 H) 2 derived from beta naphthol and used as a dye intermediate; 2-naphthol-3,6-disulfonic acid
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012