naphthol

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naphthol

 [naf´thol]
a phenol occurring in coal tar in two forms: α- or 1-naphthol and β- or 2-naphthol. It is used in dyes, insecticides, and pharmaceutical compounds. If excessive amounts are ingested, poisoning may result, characterized by anemia, jaundice, convulsions, and coma.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

naph·thol

(naf'thol),
A hydroxynaphthalene, occurring in two forms: α-naphthol, a dye intermediate used in cytochemistry for l-arginine localization; and β-naphthol, also known as isonaphthol, used as an anthelmintic and antiseptic. Both forms are also used in the manufacture of dyes, organic chemicals, and rubber products.
Synonym(s): naphthalenol
Farlex Partner Medical Dictionary © Farlex 2012

naphthol

Toxicology A white crystalline phenol derivative intermediate in the synthesis of multiple compounds including pharmaceuticals Toxicity Abdominal pain, glomerulonephritis, convulsions, circulatory collapse, skin pigmentation
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Regression analysis for urinary naphthol levels using breathing-zone naphthalene as an inhalation marker (model 1).
In conclusion, an efficient one-pot, three-component reaction of aromatic aldehydes, 2-naphthol, and amides/urea/thiourea aimed at the synthesis of amido/thioamidoalkyl naphthols under SFRCs has been developed.
Types of pigments: Blacks (carbon black, graphite), Blues (indanthrone blue, phthalocyanine blue), Corrision inhibiting (zinc flake, zinc paste), Greens (phthalocyanine green), Iron oxide pigments (black iron oxide, red/brown iron oxide-synthetic), Metallic pigments (aluminum paste, aluminum powder, waterborne aluminum, stain resistant aluminum, gold bronze powders), Reds (bon red/maroon; lithol rubine; pigment scarlet naphthol; arylide red and maroon; perylene red/ violet/scarlet; red lake c; quinacridone red/maroon/violet), Specialty pigments (high performance; pearlescent), Yellow and oranges (diarylide orange toner; diarylide yellow toner; hansa yellow; metallized azo yellow)
In this study were synthesized two oxazine derivatives using some strategies; it is important to mention that there are reports which indicate that condensation of naphthol with formaldehyde and amino groups result in naphthoxazines [10,11].
When DBE is 4, 7 or 9, among these compounds, probably phenols, naphthols and fluorenols, respectively, predominate.
Molecular ions at m/z 216 (1- and 2-naphthol), m/z 223 ([[sup.2][H.sub.7]] 1-naphthol) were monitored, and the quantitation was based on peak area ratios of the naphthols to [[sup.2][H.sub.7]] 1-naphthol.
Types of pigments: Blues (phthalos R/S, G/S, non-floccalating), Greens (phthalo green), Reds (naphthol, DPP, azo),Yellow and Oranges (high-performance, monoazo, benzimidazolone, benzimidazolone)
Types of pigments: Blacks (carbon black, graphite), Blues (indantrone blue, phthalocyanine blue) Corrision inhibiting (zinc flake, zinc paste), Greens (phthalocyanine green), Iron oxide pigments (black iron oxide, red/brown iron oxide -synthetic), Metallic pigments (aluminum paste, aluminum powder, water borne aluminum, stain resistant aluminum, gold bronze powders), Reds (bon red/maroon; lithol rubine; pigment scarlet naphthol, arylide red and maroon; perylene red/violet/scarlet; red lake c; quinacridone red/maroon/violet), Specialty pigments (high performance; pearlescent), Yellow and oranges (diarylide orange toner; diarylide yellow toner; hansa yellow; metallized azo yellow)
Types of pigments: Blacks (Carbon Black Dispersions); Blues (Indanthrone blue, Phthalocyanine Blue); Corrosion inhibiting (Zinc Flake, Zinc Paste); Greens (Phthalocyanine green); Metallic Pigments (Aluminum paste, Aluminum powder, Waterborne Aluminum, Stain resistant Aluminum, GoldBronze powders); Reds (Bon Red/Maroon, Lithol Rubine, Naphthol, Perylene Red, Perylene Maroon, Perylene Scarlet, Perylene Violet, Quinacridone Maroon, Quinacridone Red, Quinacridone Scarlet, Diketo-pyrrolo-pyrrole Red, Dioxazine Violet, Toluidine Red); Yellows and Oranges (Diarylide Yellow, Diarylide Orange, Hansa Yellow, Azo Yellow, Isoindoline Yellow, Benzimidazalone Yellow, Benzimidazalone Orange, Perinone Orange)
Pigments Offered: Blacks (complex inorganic colored pigments [CIPIs]); Blues (phthalocyanine, indanthrone, CPIs); Corrosion Inhibiting (calcium, zinc, strontium phosphates); Greens (phthalocyanine, CPIs); Reds (naphthols, benzimadazolone, DPP, quinacridone); Specialty Pigments (dispersions, colorants); Yellows and Oranges (bismuth vanadate, CPIs, organic yellow 74 and 83, diazo); Whites (titanium dioxide dispersions)
Pigments Offered: Blacks (complex inorganic colored pigments [CPIs]); Blues (phthalocyanine, indanthrone, CPIs); Corrosion Inhibiting (calcium, zinc, strontium phosphates); Greens (phthalocyanine, CPIs); Reds (naphthols, benzimadazolone, DPP, quinacridone); Specialty Pigments (dispersions, colorants); Yellows and Oranges (bismuth vanadate, CPIs, organic yellow 74 and 83, diazo); Whites (titanium dioxide dispersions)
Pigments Offered: Blacks (complex inorganic pigments); Blues (phthalocyanine, indanthrone, complex inorganic pigments); Corrosion Inhibiting (calcium, zinc, strontium phosphates); Greens (phthalocyanine, complex inorganic colored pigments); Reds (naphthols, benzimadazolone, DPP); Specialty Pigments (dispersions, colorants); Yellows and Oranges (bismuth vanadate, complex inorganic colored pigments, diazo).