Beta iron
an allotrope of iron, stable between 768°c and 910°c, similar to alpha iron but nonmagnetic.
noun
a nonmagnetic allotrope of pure iron stable between 770°c and 910°c
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beta (def 6).
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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 […]
- Beta-naphthylamine
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