• Webster's Revised Unabridged Dictionary
    • n Naphthylamine (Chem) One of two basic amido derivatives of naphthalene, C10H7.NH2, forming crystalline solids.
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Century Dictionary and Cyclopedia
    • n naphthylamine A chemical base (C10H7NH2) obtained from nitronaphthalene by reducing it with iron-filings and acetic acid. It occurs in fine crystals, insoluble in water, and having a disgusting odor. It unites with acids to form crystallizable salts, and is the source of certain coal-tar dyes.
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In literature:

From naphthalene, either naphthylamine (a body like aniline) or naphthol (resembling phenol) may be prepared.
"The Chemistry of Hat Manufacturing" by Watson Smith
Naphthylamine Black D, 10 lb.
"The Dyeing of Woollen Fabrics" by Franklin Beech
Naphthylamine ether for blues from Diamine blacks, etc.
"The Dyeing of Cotton Fabrics" by Franklin Beech
Similarly there are two amidonaphthalenes, known as alpha- and beta-naphthylamine respectively.
"Coal" by Raphael Meldola