naphthol

/naf-thawl, -thol, nap-/US // ˈnæf θɔl, -θɒl, ˈnæp- //UK // (ˈnæfθɒl, ˈnæp-) //

萘酚,萘醇,萘酮,萘摩尔

Definitions

n.名词 noun

1
Chemistry.
- : either of two isomeric hydroxyl derivatives, C10H7OH, of naphthalene , white or yellowish crystals, with a phenolic odor, that darken on exposure to light: used chiefly in dyes, drugs, perfumes, and insecticides.

The substance has the characteristic appearance, odor and taste of naphthol.
This was observed when 6-amino-2-phenylbenzoselenazole was diazotized and coupled with B-naphthol, salicylic acid, etc.
The compounds formed are brilliant orange dyes, the latter being still largely consumed as “naphthol orange.”
Their discovery not only increased the consumption of beta-naphthol, but also that of the bases which were used for diazotising.
It is an amido-derivative of a sulpho-acid of beta-naphthol, so that naphthalene is the generating hydrocarbon of this substance.