beta (def 6).
- Beta naphthol
naphthol (def 1). either of two isomeric hydroxyl derivatives, C 1 0 H 7 OH, of naphthalene (alpha-naphthol or 1-naphthol and beta-naphthol or 2-naphthol) white or yellowish crystals, with a phenolic odor, that darken on exposure to light: used chiefly in dyes, drugs, perfumes, and insecticides. noun a white crystalline solid having two isomeric forms, […]
- Beta-naphthyl group
See under naphthyl.
- Beta-naphthyl radical
See under naphthyl. Also called alpha-naphthyl group, alpha-naphthyl radical. the univalent group C 1 0 H 7 –, having a replaceable hydrogen atom in the first, or alpha, position; 1-naphthyl group. Also called beta-naphthyl group, beta-naphthyl radical. the univalent group C 1 0 H 7 –, having a replaceable hydrogen atom in the second, or […]
a white to reddish, crystalline, water-soluble, extremely toxic solid, C 10 H 9 N, used chiefly in the manufacture of azo dyes. Historical Examples Coal Raphael Meldola Coal Raphael Meldola