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.

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

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

naphthol

a phenol occurring in coal tar: α-naphthol (1-hydroxynaphthalene) or β-naphthol (2-hydroxynaphthalene). It has antiseptic properties and is used in compound form as a skin antiseptic.
References in periodicals archive ?
Types of pigments: Blues (phtholocyanine), Greens (phtholocyanine), Reds (monoazo, naphthol, DPP, quinacridone), Yellow and oranges (monoazo, disazo, benzimidazolone, isoindoline, isoindolinine)
Naphthol blue black 2 g Glacial acetic acid 100 mL Methanol 900 mL
Dry organic pigments include phthalo blues and greens, naphthols, carbazole violet, red lake C and other shades of red, yellow, and orange.
The abnormal eosinophils demonstrate faint positivity for the naphthol AS-D choloroacetate esterase reaction, which is normally negative in eosinophils.
Most classes of these pigments, including [beta]-naphthol, Naphthol AS, mono- and di-arylide yellows, quinacridones, copper phthalocyanines, benzimidazolones, and perylenes give good diffraction data.
M9750-12; dilution 1:25), and an immunoalkaline phosphatase with naphthol fast red chromogenic substrate.
These are: Permanent Red 2B; Pyrazolone Red; Thio Red; Quinacridone Red; Naphthol Red; Lithol Rubine; Lake Red C; and Lithol Red.
Distilled water 500 mL 5-Sulfosalicylic acid 20 g Naphthol blue black 3 g Sodium carbonate 3 g Formic acid 50 mL Glacial acetic acid 50 mL Kodak Photo-Flo[TM] 600 solution 12.
Enduronone HP-7177, an opaque anthraquinone pigment red 177; Naphthol Red; Naphthanil Reds RT-172-D and RT-170-D with bright masstone; and a pigment red 170 for PE and PP.
Naphthol and Quinacridone Reds, Azo Pigment Lakes, Arylides, Diarylides and Isoindoline Yellows, Disazo Condensates, Naphthol and Benzimidazolone Oranges, Quinacridone and Dioxazin Violets.