Noun:

நெஃப்தால்,

naphthol தமிழ் அர்த்தத்தின் உதாரணம்:

None

naphthol's Usage Examples:

NAPHTHYLAMINES, or Aminonaphthalenes, C10H7NH2, the naphthalene homologues of aniline, in contrast to which they may be prepared by heating the naphthols with ammoniazinc chloride.

resorcin, the naphthols, alizarin, 'c.

If a-naphthylamine and a-naphthol be reduced, the hydrogen atoms attach themselves to the non-substituted half of the molecule, and the compounds so obtained resemble aminodiethylbenzene, C 6 H 3 NH 2 (C 2 H 5) 21 and oxydiethylbenzene, C 6 H 3.

With ferric chloride it gives a green colouration, and after a time a white flocculent precipitate of a dinaphthol.

They are crystalline, hygroscopic compounds and are employed for the manufacture of the naphthols.

- This includes a very large number of bodies chemically allied to benzol, such as carbolic acid, sulphocarbolates, creosote, wood tar, coal tar, oil of cade, thymol, salicylic acid, benzoic acid, naphthol, hydroquinon, cresol, guaiacol, ichthyol, saccharin and many others.

The hydroxyl group is more reactive than in the phenols, the naphthols being converted into naphthylamines by the action of ammonia, and forming ethers and esters much more readily.

Synonyms:

phenol, alpha-naphthol, beta-naphthol,

Antonyms:

activator,